一、装饰器
装饰器本质上就是一个python函数，他可以让其他函数在不需要做任何代码变动的前提下，增加额外的功能，装饰器的返回值也是一个函数对象。
装饰器的应用场景：比如插入日志，性能测试，事务处理，缓存等等场景。
基本装饰器
不应用装饰器
def wrapper(func): def inner(*args,**kwargs): return func(*args,**kwargs) return inner def f1(): print('f1') print(f1.__name__)
执行输出：
f1
使用装饰器
def wrapper(func): def inner(*args,**kwargs): return func(*args,**kwargs) return inner @wrapper def f1(): print('f1') print(f1.__name__)
执行输出：
inner
咦？为什么输出了inner，我要的是f1啊。因为函数装饰之后，相当于执行了inner函数，所以输出inner
为了解决这个问题，需要调用一个模块wraps
高级装饰器
wraps将 被修饰的函数(wrapped) 的一些属性值赋值给 修饰器函数(wrapper) ，最终让属性的显示更符合我们的直觉！
导入模块functools，并使用@functools.wraps，就可进行高级伪装
import functools def wrapper(func): @functools.wraps(func) def inner(*args,**kwargs): return func(*args,**kwargs) return inner @wrapper def f1(): print('f1') print(f1.__name__)
执行输出：
f1
虽然结果看起来是原来的，但真正执行的是inner
这个@functools.wraps装饰器，保留原函数信息，比如函数名
如果以后写装饰器，一定要写@functools.wraps！
后续flask会用到
二、排序规则
务必下载github代码：
https://github.com/987334176/luffy_stark/archive/v1.0.zip
因为下面的内容，都是这份代码来修改的！
修改stark-->server-->stark.py
注意：order_by是空列表，它需要用户自定义
from django.conf.urls import url from django.shortcuts import HttpResponse class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site order_by = [] # 需要排序的字段,由用户自定义 def get_order_by(self): return self.order_by # 获取排序列表 def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 print(self.model_class) queryset = self.model_class.objects.all().order_by(*self.get_order_by()) print(queryset) return HttpResponse('stark list') def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
修改app02-->stark.py，定义order_by
# 这里的site,指的是实例化后的变量名 # StarkConfig表示类 from stark.server.stark import site,StarkConfig from app02 import models from django.conf.urls import url from django.shortcuts import HttpResponse class RoleConfig(StarkConfig): order_by = ['-id'] # 有负号,表示降序 def sk2(self, request): return HttpResponse('sk2神仙水') def extra_url(self): data = [ url(r'^sk2/$', self.sk2), ] return data site.register(models.Role,RoleConfig) # 注册表
添加数据
使用navicat打开app02_role表，添加2条数据
打开app01_userinfo表，添加2条数据
访问页面
http://127.0.0.1:8000/stark/app02/role/list/
效果如下：
查看Pycharm控制台输出：
<class 'app02.models.Role'> <QuerySet [<Role: Role object>, <Role: Role object>]>
应该有一个页面，要展示一下数据。那么页面，应该写在哪里？
要写在stark里面，因为它是组件，它是能够应用到其他django项目的！
前端展示数据
进入stark应用目录，创建目录templates，在此目录下创建stark目录。在此目录创建layout.html。这个是母版文件！
{% load staticfiles %}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>路飞学城</title>
<link rel="shortcut icon" href="{% static 'stark/imgs/luffy-study-logo.png' %} ">
<link rel="stylesheet" href="{% static 'stark/plugins/bootstrap/css/bootstrap.css' %} "/>
<link rel="stylesheet" href="{% static 'stark/plugins/font-awesome/css/font-awesome.css' %} "/>
<link rel="stylesheet" href="{% static 'stark/css/commons.css' %} "/>
<link rel="stylesheet" href="{% static 'stark/css/nav.css' %} "/>
<style>
body {
margin: 0;
}
.no-radius {
border-radius: 0;
}
.no-margin {
margin: 0;
}
.pg-body > .left-menu {
background-color: #EAEDF1;
position: absolute;
left: 0;
top: 48px;
bottom: 0;
220px;
border: 1px solid #EAEDF1;
overflow: auto;
}
.pg-body > .right-body {
position: absolute;
left: 225px;
right: 0;
top: 48px;
bottom: 0;
overflow: scroll;
border: 1px solid #ddd;
border-top: 0;
font-size: 13px;
min- 755px;
}
.navbar-right {
float: right !important;
margin-right: -15px;
}
.luffy-container {
padding: 15px;
}
</style>
{% block css %}{% endblock %}
</head>
<body>
<div class="pg-header">
<div class="nav">
<div class="logo-area left">
<a href="#">
<img class="logo" src="{% static 'stark/imgs/logo.svg' %}">
<span style="font-size: 18px;">路飞学城 </span>
</a>
</div>
<div class="left-menu left">
<a class="menu-item">资产管理</a>
<a class="menu-item">用户信息</a>
<a class="menu-item">路飞管理</a>
<div class="menu-item">
<span>使用说明</span>
<i class="fa fa-caret-down" aria-hidden="true"></i>
<div class="more-info">
<a href="#" class="more-item">管他什么菜单</a>
<a href="#" class="more-item">实在是编不了</a>
</div>
</div>
</div>
<div class="right-menu right clearfix">
<div class="user-info right">
<a href="#" class="avatar">
<img class="img-circle" src="{% static 'stark/imgs/default.png' %}">
</a>
<div class="more-info">
<a href="#" class="more-item">个人信息</a>
<a href="/logout/" class="more-item">注销</a>
</div>
</div>
<a class="user-menu right">
消息
<i class="fa fa-commenting-o" aria-hidden="true"></i>
<span class="badge bg-success">2</span>
</a>
<a class="user-menu right">
通知
<i class="fa fa-envelope-o" aria-hidden="true"></i>
<span class="badge bg-success">2</span>
</a>
<a class="user-menu right">
任务
<i class="fa fa-bell-o" aria-hidden="true"></i>
<span class="badge bg-danger">4</span>
</a>
</div>
</div>
</div>
<div class="pg-body">
<div class="left-menu">
<div class="menu-body">
</div>
</div>
<div class="right-body">
<div>
</div>
{% block content %} {% endblock %}
</div>
</div>
<script src="{% static 'stark/js/jquery-3.3.1.min.js' %} "></script>
<script src="{% static 'stark/plugins/bootstrap/js/bootstrap.js' %} "></script>
{% block js %} {% endblock %}
</body>
</html>
进入目录stark-->templates-->stark，创建文件changelist.html
{% extends 'stark/layout.html' %}
{% block content %}
<h1>列表页面</h1>
<div>
<table class="table table-bordered">
<thead>
<tr>
<th>第一列</th>
<th>第二列</th>
<th>第三列</th>
</tr>
</thead>
<tbody>
<tr>
<td>11</td>
<td>22</td>
<td>33</td>
</tr>
</tbody>
</table>
</div>
{% endblock %}
进入stark应用目录，创建目录static，再创建stark目录
下载文件：
https://github.com/987334176/luffy_permission/archive/v1.5.zip
解压文件，进入目录web-->static，将里面的css，imgs，js，plugins复制过来
项目结构如下：
这里面删除了css，js相关文件，否则结构长了！
luffy_stark/ ├── app01 │ ├── admin.py │ ├── apps.py │ ├── __init__.py │ ├── models.py │ ├── stark.py │ ├── tests.py │ └── views.py ├── app02 │ ├── admin.py │ ├── apps.py │ ├── __init__.py │ ├── models.py │ ├── stark.py │ ├── tests.py │ └── views.py ├── db.sqlite3 ├── luffy_stark │ ├── __init__.py │ ├── settings.py │ ├── urls.py │ └── wsgi.py ├── manage.py ├── README.md └── stark ├── admin.py ├── apps.py ├── __init__.py ├── models.py ├── server │ └── stark.py ├── static │ └── stark │ ├── css │ ├── imgs │ ├── js │ └── plugins ├── templates │ └── stark │ ├── changelist.html │ └── layout.html ├── tests.py └── views.py
注意：changelist.html是在stark-->templates-->stark目录里面！
修改stark-->server-->stark.py，渲染changelist.html
from django.conf.urls import url from django.shortcuts import HttpResponse,render class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site order_by = [] # 需要排序的字段,由用户自定义 def get_order_by(self): return self.order_by # 获取排序列表 def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) return render(request,'stark/changelist.html') def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
重启django项目，访问url:
http://127.0.0.1:8000/stark/app02/role/list/
效果如下：
二、显示列
如果需要显示自定义的列，怎么做？
定义header_list和list_display，分别表示头部和显示的列。
修改stark-->server-->stark.py
from django.conf.urls import url from django.shortcuts import HttpResponse,render class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site order_by = [] # 需要排序的字段,由用户自定义 def get_order_by(self): return self.order_by # 获取排序列表 def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = ['id','username'] # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name in list_display: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name).verbose_name header_list.append(verbose_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 for name in list_display: # 使用反射获取对象的值 val = getattr(row, name) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
修改changelist.html，使用for循环
{% extends 'stark/layout.html' %}
{% block content %}
<h1>列表页面</h1>
<div>
<table class="table table-bordered">
<thead>
<tr>
{% for item in header_list %}
<th>{{ item }}</th>
{% endfor %}
</tr>
</thead>
<tbody>
{% for row_list in body_list %}
<tr>
{% for col in row_list %}
<td>{{ col }}</td>
{% endfor %}
</tr>
{% endfor %}
</tbody>
</table>
</div>
{% endblock %}
刷新页面，效果如下：
去掉id
修改stark-->server-->stark.py，修改list_display
list_display = ['username']
刷新页面，效果如下：
这个变量，定死了。应该要动态生成才行。
修改stark-->server-->stark.py，定义静态变量，定义方法get_list_display
from django.conf.urls import url from django.shortcuts import HttpResponse,render class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name in list_display: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name).verbose_name header_list.append(verbose_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 for name in list_display: # 使用反射获取对象的值 val = getattr(row, name) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
修改app02-->stark.py，设置list_display，只显示title
# 这里的site,指的是实例化后的变量名 # StarkConfig表示类 from stark.server.stark import site,StarkConfig from app02 import models from django.conf.urls import url from django.shortcuts import HttpResponse class RoleConfig(StarkConfig): order_by = ['-id'] # 有负号,表示降序 list_display = ['title'] # 定义显示的列 def sk2(self, request): return HttpResponse('sk2神仙水') def extra_url(self): data = [ url(r'^sk2/$', self.sk2), ] return data site.register(models.Role,RoleConfig) # 注册表
刷新页面，效果同上！
修改app01-->stark.py，增加自定义方法
from stark.server.stark import site,StarkConfig from app01 import models class UserInfoConfig(StarkConfig): list_display = ['id','username'] site.register(models.UserInfo,UserInfoConfig)
访问url: http://127.0.0.1:8000/stark/app01/userinfo/list/
效果如下：
如果用户没有指定list_display，那改如何显示？直接显示表名和对象
修改stark-->server-->stark.py，做判断。header_list显示表名，body_list显示对象
from django.conf.urls import url from django.shortcuts import HttpResponse,render class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name in list_display: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name in list_display: # 使用反射获取对象的值 val = getattr(row, name) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
修改 app02-->stark.py，注释掉list_display变量
访问url： http://127.0.0.1:8000/stark/app02/role/list/
但是显示object，用户会不爽，怎么搞？
修改app02-->models.py，增加__str__方法，用来显示默认字段
from django.db import models # Create your models here. class Role(models.Model): title = models.CharField(verbose_name="名称", max_length=32) def __str__(self): return self.title
修改app01-->models.py，增加__str__方法
from django.db import models # Create your models here. class UserInfo(models.Model): username = models.CharField(verbose_name="用户名",max_length=32) def __str__(self): return self.username
刷新页面，效果如下：
注意：在stark-->server-->stark.py 中定义的get_list_display方法，是一个预留的钩子。它可以做定制化
在app01-->stark.py里面定义了list_display，默认是所有用户，都显示这些列。
如果需要根据用户角色不同来展示不同的数据呢？那么这个钩子，就可以派上用场了！
可以直接在app01-->stark.py里面，重构get_list_display方法。
比如：
修改app02-->stark.py
注意：get_list_display里面的if 1 == 1，只是为了做演示而已。实际上，应该是你的业务代码！
# 这里的site,指的是实例化后的变量名 # StarkConfig表示类 from stark.server.stark import site,StarkConfig from app02 import models from django.conf.urls import url from django.shortcuts import HttpResponse class RoleConfig(StarkConfig): order_by = ['-id'] # 有负号,表示降序 # list_display = ['id','title'] # 定义显示的列 def get_list_display(self): if 1 == 1: return ['id'] else: return ['id','title'] def sk2(self, request): return HttpResponse('sk2神仙水') def extra_url(self): data = [ url(r'^sk2/$', self.sk2), ] return data site.register(models.Role,RoleConfig) # 注册表
注意：list_display和get_list_display不能同时存在。因为list_display的优先级比get_list_display高
定义了list_display，那么get_list_display就没有效果了！
访问url： http://127.0.0.1:8000/stark/app02/role/list/
效果如下：
修改app01-->models.py，增加部门表
from django.db import models # Create your models here. class UserInfo(models.Model): username = models.CharField(verbose_name="用户名",max_length=32) def __str__(self): return self.username class Depart(models.Model): name = models.CharField(verbose_name='部门名称',max_length=32) tel = models.CharField(verbose_name='联系电话',max_length=31) user = models.ForeignKey(verbose_name='负责人',to='UserInfo') def __str__(self): return self.name
使用2个命令生成表
python manage.py makemigrations
python manage.py migrate
注意：如果无法生成表depart，使用命令
python manage.py makemigrations app01
python manage.py migrate
添加2条记录
修改app01-->stark.py，注册表Depart
from stark.server.stark import site,StarkConfig from app01 import models class UserInfoConfig(StarkConfig): list_display = ['id','username'] site.register(models.UserInfo,UserInfoConfig) site.register(models.Depart)
访问部门的url： http://127.0.0.1:8000/stark/app01/depart/list/
效果如下：
修改app01-->stark.py，为depart增加list_display
from stark.server.stark import site,StarkConfig from app01 import models class UserInfoConfig(StarkConfig): list_display = ['id','username'] class DepartConfig(StarkConfig): list_display = ['name','tel','user'] site.register(models.UserInfo,UserInfoConfig) site.register(models.Depart,DepartConfig)
千万要记得在site.register，添加自定义类！否则下面的效果出不来！
刷新页面，效果如下：
查看stark-->server-->stark.py，查看changelist_view，发现代码都写在这里了。可读性不好！
如果要增加其他功能呢？比如下面的效果：
那么就需要拆分代码，不同的功能，放在不同的方法里面！
四、添加按钮
CheckBox
以部门表为例，加一个checkbox，也就是复选框
修改 app01-->stark.py，增加一个方法，添加到列表中
from stark.server.stark import site,StarkConfig from app01 import models class UserInfoConfig(StarkConfig): list_display = ['id','username'] class DepartConfig(StarkConfig): def f1(self): # 测试函数 pass list_display = [f1,'name', 'tel', 'user'] site.register(models.UserInfo,UserInfoConfig) site.register(models.Depart,DepartConfig)
修改 stark-->server-->stark.py，对list_display每一个元素做判断。
如果是字符串，去数据库取。如果是函数，去用户自定义的方法中获取！使用FunctionType判断
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self) # 执行函数获取 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
修改app01-->stark.py，增加方法f1
from stark.server.stark import site,StarkConfig from app01 import models class UserInfoConfig(StarkConfig): list_display = ['id','username'] class DepartConfig(StarkConfig): def f1(self,header=False): # 测试函数 if header: # 输出中文 return "选择" return "checkbox" # 标签名 list_display = [f1,'name', 'tel', 'user'] site.register(models.UserInfo,UserInfoConfig) site.register(models.Depart,DepartConfig)
访问页面：http://127.0.0.1:8000/stark/app01/depart/list/
效果如下：
这个checkbox看着不爽，要换成html标签。需要使用mark_safe渲染html标签
修改app01-->stark.py，返回一个input标签
from stark.server.stark import site,StarkConfig from app01 import models from django.utils.safestring import mark_safe class UserInfoConfig(StarkConfig): list_display = ['id','username'] class DepartConfig(StarkConfig): def f1(self,header=False): # 测试函数 if header: # 输出标签 return mark_safe('<input type="checkbox" name="pk" />') return mark_safe('<input type="checkbox" name="pk" />') # 标签名 list_display = [f1,'name', 'tel', 'user'] site.register(models.UserInfo,UserInfoConfig) site.register(models.Depart,DepartConfig)
刷新页面，效果如下：
但是有一个问题，input标签的值和行数据的id不匹配。怎么动态获取呢？
在stark-->server-->stark.py里面，给它传一个row对象，就可以获取了！
修改stark-->server-->stark.py，传递row参数
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType from django.utils.safestring import mark_safe class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
修改app01-->stark.py，接收row参数
f1的名字不好，要改成display_checkbox
from stark.server.stark import site,StarkConfig from app01 import models from django.utils.safestring import mark_safe class UserInfoConfig(StarkConfig): list_display = ['id','username'] class DepartConfig(StarkConfig): def f1(self,row=None,header=False): # 测试函数 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) list_display = [f1,'name', 'tel', 'user'] site.register(models.UserInfo,UserInfoConfig) site.register(models.Depart,DepartConfig)
刷新页面，效果如下：
id就动态生成了！
以后有form表单，后台就可以批量操作了
现在role表也想有checkbox功能，怎么办？代码copy一遍？
这样不好，如果有10个表呢？需要写在StarkConfig类里面！
为什么呢？因为在app01-->stark.py里面的自定义类，都是继承了StarkConfig类
修改stark-->server-->stark.py，在StarkConfig类增加display_checkbox方法
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType from django.utils.safestring import mark_safe class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
修改app01-->stark.py，使用StarkConfig类的display_checkbox方法
from stark.server.stark import site,StarkConfig from app01 import models class UserInfoConfig(StarkConfig): list_display = ['id','username'] class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox,'name', 'tel', 'user'] site.register(models.UserInfo,UserInfoConfig) site.register(models.Depart,DepartConfig)
刷新页面，效果同上！
修改app02-->stark.py，使用display_checkbox方法
# 这里的site,指的是实例化后的变量名 # StarkConfig表示类 from stark.server.stark import site,StarkConfig from app02 import models from django.conf.urls import url from django.shortcuts import HttpResponse class RoleConfig(StarkConfig): order_by = ['-id'] # 有负号,表示降序 # 定义显示的列 list_display = [StarkConfig.display_checkbox,'id','title'] # def get_list_display(self): # 钩子函数,用来做定制显示 # if 1 == 1: # return ['id'] # else: # return ['id','title'] def sk2(self, request): return HttpResponse('sk2神仙水') def extra_url(self): data = [ url(r'^sk2/$', self.sk2), ] return data site.register(models.Role,RoleConfig) # 注册表
访问url: http://127.0.0.1:8000/stark/app02/role/list/
效果如下：
编辑和删除
修改stark-->server-->stark.py，增加编辑和删除方法
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType from django.utils.safestring import mark_safe class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe('<a href="/edit/%s">编辑</a>' % row.pk) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe('<a href="/del/%s">删除</a>' % row.pk) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
修改app01-->stark.py，应用编辑和删除
from stark.server.stark import site, StarkConfig from app01 import models class UserInfoConfig(StarkConfig): list_display = ['id', 'username'] class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox, 'name', 'tel', 'user', StarkConfig.display_edit, StarkConfig.display_del] site.register(models.UserInfo, UserInfoConfig) site.register(models.Depart, DepartConfig)
重启django项目，访问页面： http://127.0.0.1:8000/stark/app01/depart/list/
效果如下：
文字看着不爽，改成图标
修改stark-->server-->stark.py
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType from django.utils.safestring import mark_safe class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe('<a href="/edit/%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % row.pk) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe('<a href="/del/%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % row.pk) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
刷新页面，效果如下：
编辑和删除，占用太宽了。合并成一列！
修改stark-->server-->stark.py，增加方法display_edit_del
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType from django.utils.safestring import mark_safe class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe('<a href="/edit/%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % row.pk) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe('<a href="/del/%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % row.pk) def display_edit_del(self, row=None, header=False): if header: return "操作" tpl = """<a href="/edit/%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a> | <a href="/del/%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a> """ % (row.pk, row.pk,) return mark_safe(tpl) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name # print(info) urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
修改app01-->stark.py，应用方法display_edit_del
from stark.server.stark import site, StarkConfig from app01 import models class UserInfoConfig(StarkConfig): list_display = ['id', 'username'] class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox, 'name', 'tel', 'user', StarkConfig.display_edit_del] site.register(models.UserInfo, UserInfoConfig) site.register(models.Depart, DepartConfig)
刷新页面，效果如下：
通过这样，想显示 编辑、删除、编辑和删除。都可以任意选择！
但是有一个问题，url不对。怎么办？应该使用url别名反向生成。
看这一段代码
info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), ... ]
别名需要app名和表名，以及命令空间。再拼接_changelist，就可以反向生成url了
修改stark-->server-->stark.py，增加方法reverse_edit_url方法。并在编辑的方法中，使用此方法获取url
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType from django.utils.safestring import mark_safe from django.urls import reverse class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe('<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % self.reverse_edit_url(row)) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe('<a href="/del/%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % row.pk) def display_edit_del(self, row=None, header=False): if header: return "操作" tpl = """<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a> | <a href="/del/%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a> """ % (self.reverse_edit_url(row), row.pk,) return mark_safe(tpl) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass def reverse_edit_url(self, row): # 反向生成编辑行内容的url app_label = self.model_class._meta.app_label # app名 model_name = self.model_class._meta.model_name # 表名 namespace = self.site.namespace # 命名空间 # 拼接字符串 name = '%s:%s_%s_change' % (namespace, app_label, model_name) # 反向生成url,传入参数pk=row.pk edit_url = reverse(name, kwargs={'pk': row.pk}) return edit_url @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
重启django项目，访问url： http://127.0.0.1:8000/stark/app01/depart/list/
可以发现url生成了，效果如下：
点击编辑按钮，会自动跳转页面
http://127.0.0.1:8000/stark/app01/depart/1/change/
效果如下：
那么删除也是同样的，再定义一个方法reverse_del_url方法。并在删除的方法中，使用此方法获取url
修改stark-->server-->stark.py
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType from django.utils.safestring import mark_safe from django.urls import reverse class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe( '<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % self.reverse_edit_url(row)) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe( '<a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % self.reverse_del_url(row)) def display_edit_del(self, row=None, header=False): if header: return "操作" tpl = """<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a> | <a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a> """ % (self.reverse_edit_url(row), self.reverse_del_url(row),) return mark_safe(tpl) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass def reverse_edit_url(self, row): # 反向生成编辑行内容的url app_label = self.model_class._meta.app_label # app名 model_name = self.model_class._meta.model_name # 表名 namespace = self.site.namespace # 命名空间 # 拼接字符串,这里为change name = '%s:%s_%s_change' % (namespace, app_label, model_name) # 反向生成url,传入参数pk=row.pk edit_url = reverse(name, kwargs={'pk': row.pk}) return edit_url def reverse_del_url(self, row): # 反向生成删除行内容的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace # 注意:这里为del name = '%s:%s_%s_del' % (namespace, app_label, model_name) del_url = reverse(name, kwargs={'pk': row.pk}) return del_url @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
刷新页面，效果如下：
点击删除按钮，会自动跳转页面
http://127.0.0.1:8000/stark/app01/depart/1/del/
效果如下：
那么其他页面，也是同样的效果！
添加按钮
修改stark-->templates-->stark-->changelist.html ，先写一个添加按钮
{% extends 'stark/layout.html' %}
{% block content %}
<h1>列表页面</h1>
<div>
<div style="margin: 5px 0;">
<a href="#" class="btn btn-success">添加</a>
</div>
<table class="table table-bordered">
<thead>
<tr>
{% for item in header_list %}
<th>{{ item }}</th>
{% endfor %}
</tr>
</thead>
<tbody>
{% for row_list in body_list %}
<tr>
{% for col in row_list %}
<td>{{ col }}</td>
{% endfor %}
</tr>
{% endfor %}
</tbody>
</table>
</div>
{% endblock %}
访问页面： http://127.0.0.1:8000/stark/app01/depart/list/
效果如下：
但是，并不是每个页面，都需要显示添加按钮。如何控制页面显示呢？
修改stark-->server-->stark.py，增加get_add_btn方法
注意：在渲染stark/changelist.html页面时，要传入参数add_btn
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType from django.utils.safestring import mark_safe from django.urls import reverse class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe( '<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % self.reverse_edit_url(row)) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe( '<a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % self.reverse_del_url(row)) def display_edit_del(self, row=None, header=False): if header: return "操作" tpl = """<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a> | <a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a> """ % (self.reverse_edit_url(row), self.reverse_del_url(row),) return mark_safe(tpl) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def get_add_btn(self): # 显示添加按钮 return mark_safe('<a href="#" class="btn btn-success">添加</a>') def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) add_btn = self.get_add_btn() # 添加按钮返回值,不为空展示,否则不展示 list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) # 注意:要传入add_btn return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list,'add_btn':add_btn}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass def reverse_edit_url(self, row): # 反向生成编辑行内容的url app_label = self.model_class._meta.app_label # app名 model_name = self.model_class._meta.model_name # 表名 namespace = self.site.namespace # 命名空间 # 拼接字符串,这里为change name = '%s:%s_%s_change' % (namespace, app_label, model_name) # 反向生成url,传入参数pk=row.pk edit_url = reverse(name, kwargs={'pk': row.pk}) return edit_url def reverse_del_url(self, row): # 反向生成删除行内容的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace # 注意:这里为del name = '%s:%s_%s_del' % (namespace, app_label, model_name) del_url = reverse(name, kwargs={'pk': row.pk}) return del_url @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
修改app01-->stark.py，重构get_add_btn方法，返回None
from stark.server.stark import site, StarkConfig from app01 import models class UserInfoConfig(StarkConfig): list_display = ['id', 'username'] class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox, 'name', 'tel', 'user', StarkConfig.display_edit_del] def get_add_btn(self): # 返回None,表示不显示添加按钮 pass site.register(models.UserInfo, UserInfoConfig) site.register(models.Depart, DepartConfig)
修改stark-->templates-->stark-->changelist.html，做一个if判断。如果get_add_btn返回结果不为空，则展示。否则不显示！
{% extends 'stark/layout.html' %}
{% block content %}
<h1>列表页面</h1>
<div>
{% if add_btn %}
<div style="margin: 5px 0;">
{{ add_btn }}
</div>
{% endif %}
<table class="table table-bordered">
<thead>
<tr>
{% for item in header_list %}
<th>{{ item }}</th>
{% endfor %}
</tr>
</thead>
<tbody>
{% for row_list in body_list %}
<tr>
{% for col in row_list %}
<td>{{ col }}</td>
{% endfor %}
</tr>
{% endfor %}
</tbody>
</table>
</div>
{% endblock %}
刷新页面，就没有添加按钮了，效果如下：
那么其他页面，是有的，访问页面：
但是链接不对，得生成url
修改stark-->server-->stark.py，增加reverse_add_url方法
并修改get_add_btn，执行reverse_add_url方法
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType from django.utils.safestring import mark_safe from django.urls import reverse class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe( '<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % self.reverse_edit_url(row)) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe( '<a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % self.reverse_del_url(row)) def display_edit_del(self, row=None, header=False): if header: return "操作" tpl = """<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a> | <a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a> """ % (self.reverse_edit_url(row), self.reverse_del_url(row),) return mark_safe(tpl) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def get_add_btn(self): # 显示添加按钮 return mark_safe('<a href="%s" class="btn btn-success">添加</a>' % self.reverse_add_url()) def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) add_btn = self.get_add_btn() # 添加按钮返回值,不为空展示,否则不展示 list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) # 注意:要传入add_btn return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list,'add_btn':add_btn}) def add_view(self, request): return HttpResponse('stark add') def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass def reverse_add_url(self): # 反向生成添加url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace name = '%s:%s_%s_add' % (namespace, app_label, model_name) add_url = reverse(name) return add_url def reverse_edit_url(self, row): # 反向生成编辑行内容的url app_label = self.model_class._meta.app_label # app名 model_name = self.model_class._meta.model_name # 表名 namespace = self.site.namespace # 命名空间 # 拼接字符串,这里为change name = '%s:%s_%s_change' % (namespace, app_label, model_name) # 反向生成url,传入参数pk=row.pk edit_url = reverse(name, kwargs={'pk': row.pk}) return edit_url def reverse_del_url(self, row): # 反向生成删除行内容的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace # 注意:这里为del name = '%s:%s_%s_del' % (namespace, app_label, model_name) del_url = reverse(name, kwargs={'pk': row.pk}) return del_url @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
访问url: http://127.0.0.1:8000/stark/app01/userinfo/list/
点击添加按钮，页面跳转
那么页面的添加按钮，链接是不一样的。
五、定制ModelForm
添加数据
问题来了，如果是添加，这个页面应该有几个input框？
每个页面，都需要做表单验证，还有默认选中状态
这就需要用到ModelForm
要为每一个model生成类，还得需要实例化。比如这样
class xxxModelForm(ModelForm): class Meta: model = xxx field = ['id','xx']
修改stark-->server-->stark.py，增加类 AddModelForm，并渲染页面change.html
from django.conf.urls import url from django.shortcuts import HttpResponse,render from types import FunctionType from django.utils.safestring import mark_safe from django.urls import reverse from django import forms class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe( '<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % self.reverse_edit_url(row)) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe( '<a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % self.reverse_del_url(row)) def display_edit_del(self, row=None, header=False): if header: return "操作" tpl = """<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a> | <a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a> """ % (self.reverse_edit_url(row), self.reverse_del_url(row),) return mark_safe(tpl) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def get_add_btn(self): # 显示添加按钮 return mark_safe('<a href="%s" class="btn btn-success">添加</a>' % self.reverse_add_url()) def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) add_btn = self.get_add_btn() # 添加按钮返回值,不为空展示,否则不展示 list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) # 注意:要传入add_btn return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list,'add_btn':add_btn}) def add_view(self, request): """ 所有的添加页面,都在此方法处理 使用ModelForm实现 :param request: :return: """ class AddModelForm(forms.ModelForm): class Meta: model = self.model_class fields = "__all__" if request.method == "GET": form = AddModelForm() return render(request,'stark/change.html',{'form':form}) def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass def reverse_add_url(self): # 反向生成添加url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace name = '%s:%s_%s_add' % (namespace, app_label, model_name) add_url = reverse(name) return add_url def reverse_edit_url(self, row): # 反向生成编辑行内容的url app_label = self.model_class._meta.app_label # app名 model_name = self.model_class._meta.model_name # 表名 namespace = self.site.namespace # 命名空间 # 拼接字符串,这里为change name = '%s:%s_%s_change' % (namespace, app_label, model_name) # 反向生成url,传入参数pk=row.pk edit_url = reverse(name, kwargs={'pk': row.pk}) return edit_url def reverse_del_url(self, row): # 反向生成删除行内容的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace # 注意:这里为del name = '%s:%s_%s_del' % (namespace, app_label, model_name) del_url = reverse(name, kwargs={'pk': row.pk}) return del_url @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
进入目录 stark-->templates-->stark，创建文件change.html
写一个form表单，使用for循环
{% extends 'stark/layout.html' %}
{% block css %}
<style>
.change input,select {
display: block;
100%;
height: 34px;
padding: 6px 12px;
font-size: 14px;
line-height: 1.42857143;
color: #555;
background-color: #fff;
background-image: none;
border: 1px solid #ccc;
border-radius: 4px;
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
-webkit-transition: border-color ease-in-out .15s, -webkit-box-shadow ease-in-out .15s;
-o-transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
}
</style>
{% endblock %}
{% block content %}
<div style=" 680px;margin: 0 auto;">
<form class="change" method="post">
{% csrf_token %}
{% for filed in form %}
<div class="form-group">
<label>{{ filed.label }}</label>
{{ filed }}
{{ filed.errors.0 }}
</div>
{% endfor %}
<button type="submit" class="btn btn-default">Submit</button>
</form>
</div>
{% endblock %}
修改app01-->stark.py，注释get_add_btn方法。让它显示添加按钮
from stark.server.stark import site, StarkConfig from app01 import models class UserInfoConfig(StarkConfig): list_display = ['id', 'username'] class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox, 'name', 'tel', 'user', StarkConfig.display_edit_del] # def get_add_btn(self): # 返回None,表示不显示添加按钮 # pass site.register(models.UserInfo, UserInfoConfig) site.register(models.Depart, DepartConfig)
重启django项目，访问页面： http://127.0.0.1:8000/stark/app01/depart/list/
点击添加按钮，效果如下：
点击提交，没有任何效果。
修改stark-->server-->stark.py，修改add_view方法。为post时，保存数据
添加reverse_list_url方法，用来做保存之后的跳转
from django.conf.urls import url from django.shortcuts import HttpResponse,render,redirect from types import FunctionType from django.utils.safestring import mark_safe from django.urls import reverse from django import forms class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe( '<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % self.reverse_edit_url(row)) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe( '<a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % self.reverse_del_url(row)) def display_edit_del(self, row=None, header=False): if header: return "操作" tpl = """<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a> | <a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a> """ % (self.reverse_edit_url(row), self.reverse_del_url(row),) return mark_safe(tpl) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def get_add_btn(self): # 显示添加按钮 return mark_safe('<a href="%s" class="btn btn-success">添加</a>' % self.reverse_add_url()) def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) add_btn = self.get_add_btn() # 添加按钮返回值,不为空展示,否则不展示 list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) # 注意:要传入add_btn return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list,'add_btn':add_btn}) def add_view(self, request): """ 所有的添加页面,都在此方法处理 使用ModelForm实现 :param request: :return: """ class AddModelForm(forms.ModelForm): class Meta: model = self.model_class fields = "__all__" if request.method == "GET": form = AddModelForm() return render(request,'stark/change.html',{'form':form}) form = AddModelForm(request.POST) # 接收POST数据 if form.is_valid(): # 验证数据 form.save() # 自动保存数据 # 反向生成url,跳转到列表页面 return redirect(self.reverse_list_url()) # 渲染页面,此时会保存表单数据 return render(request, 'stark/change.html', {'form': form}) def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass def reverse_list_url(self): # 反向生成访问列表的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace name = '%s:%s_%s_changelist' % (namespace, app_label, model_name) list_url = reverse(name) return list_url def reverse_add_url(self): # 反向生成添加url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace name = '%s:%s_%s_add' % (namespace, app_label, model_name) add_url = reverse(name) return add_url def reverse_edit_url(self, row): # 反向生成编辑行内容的url app_label = self.model_class._meta.app_label # app名 model_name = self.model_class._meta.model_name # 表名 namespace = self.site.namespace # 命名空间 # 拼接字符串,这里为change name = '%s:%s_%s_change' % (namespace, app_label, model_name) # 反向生成url,传入参数pk=row.pk edit_url = reverse(name, kwargs={'pk': row.pk}) return edit_url def reverse_del_url(self, row): # 反向生成删除行内容的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace # 注意:这里为del name = '%s:%s_%s_del' % (namespace, app_label, model_name) del_url = reverse(name, kwargs={'pk': row.pk}) return del_url @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
重启django项目，访问添加页面： http://127.0.0.1:8000/stark/app01/depart/add/
添加一条数据，点击提交
页面会自动跳转，添加的数据，就可以看到了！
这样不够好，其他方法要使用ModelForm呢？比如编辑
修改stark-->server-->stark.py，定义get_model_form_class方法，将add_view方法中的AddModelForm类抽离出来
from django.conf.urls import url from django.shortcuts import HttpResponse,render,redirect from types import FunctionType from django.utils.safestring import mark_safe from django.urls import reverse from django import forms class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe( '<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % self.reverse_edit_url(row)) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe( '<a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % self.reverse_del_url(row)) def display_edit_del(self, row=None, header=False): if header: return "操作" tpl = """<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a> | <a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a> """ % (self.reverse_edit_url(row), self.reverse_del_url(row),) return mark_safe(tpl) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 model_form_class = None # form组件需要的model_class def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def get_add_btn(self): # 显示添加按钮 return mark_safe('<a href="%s" class="btn btn-success">添加</a>' % self.reverse_add_url()) def get_model_form_class(self): """ 获取ModelForm类 :return: """ if self.model_form_class: return self.model_form_class class AddModelForm(forms.ModelForm): class Meta: model = self.model_class fields = "__all__" return AddModelForm def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) add_btn = self.get_add_btn() # 添加按钮返回值,不为空展示,否则不展示 list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) # 注意:要传入add_btn return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list,'add_btn':add_btn}) def add_view(self, request): """ 所有的添加页面,都在此方法处理 使用ModelForm实现 :param request: :return: """ # 添加数据,使用ModelForm AddModelForm = self.get_model_form_class() if request.method == "GET": form = AddModelForm() return render(request,'stark/change.html',{'form':form}) form = AddModelForm(request.POST) # 接收POST数据 if form.is_valid(): # 验证数据 form.save() # 自动保存数据 # 反向生成url,跳转到列表页面 return redirect(self.reverse_list_url()) # 渲染页面,此时会保存表单数据 return render(request, 'stark/change.html', {'form': form}) def change_view(self, request, pk): return HttpResponse('stark change') def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass def reverse_list_url(self): # 反向生成访问列表的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace name = '%s:%s_%s_changelist' % (namespace, app_label, model_name) list_url = reverse(name) return list_url def reverse_add_url(self): # 反向生成添加url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace name = '%s:%s_%s_add' % (namespace, app_label, model_name) add_url = reverse(name) return add_url def reverse_edit_url(self, row): # 反向生成编辑行内容的url app_label = self.model_class._meta.app_label # app名 model_name = self.model_class._meta.model_name # 表名 namespace = self.site.namespace # 命名空间 # 拼接字符串,这里为change name = '%s:%s_%s_change' % (namespace, app_label, model_name) # 反向生成url,传入参数pk=row.pk edit_url = reverse(name, kwargs={'pk': row.pk}) return edit_url def reverse_del_url(self, row): # 反向生成删除行内容的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace # 注意:这里为del name = '%s:%s_%s_del' % (namespace, app_label, model_name) del_url = reverse(name, kwargs={'pk': row.pk}) return del_url @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
测试添加功能，访问以下url:
http://127.0.0.1:8000/stark/app01/userinfo/list/
点击添加
添加一条数据
发现数据有了
修改 app01-->stark.py，自定义form类，添加DepartModelForm
from stark.server.stark import site, StarkConfig from app01 import models from django import forms class UserInfoConfig(StarkConfig): list_display = ['id', 'username'] class DepartModelForm(forms.ModelForm): class Meta: model = models.Depart fields = "__all__" def clean_name(self): # 定义钩子 print(self.cleaned_data['name']) return self.cleaned_data['name'] class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox, 'name', 'tel', 'user', StarkConfig.display_edit_del] model_form_class = DepartModelForm # def get_add_btn(self): # 返回None,表示不显示添加按钮 # pass site.register(models.UserInfo, UserInfoConfig) site.register(models.Depart, DepartConfig)
访问url:
http://127.0.0.1:8000/stark/app01/depart/list/
点击添加按钮，添加一条数据
提交之后，页面跳转，数据就出来了
查看Pycharm控制台输出：
运营部
说明它，走到了clean_name钩子。那么表示，app01-->stark.py自定义的ModelForm类生效了！
编辑数据
修改stark-->server-->stark.py，修改change_view方法
from django.conf.urls import url from django.shortcuts import HttpResponse,render,redirect from types import FunctionType from django.utils.safestring import mark_safe from django.urls import reverse from django import forms class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe( '<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % self.reverse_edit_url(row)) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe( '<a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % self.reverse_del_url(row)) def display_edit_del(self, row=None, header=False): if header: return "操作" tpl = """<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a> | <a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a> """ % (self.reverse_edit_url(row), self.reverse_del_url(row),) return mark_safe(tpl) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 model_form_class = None # form组件需要的model_class def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def get_add_btn(self): # 显示添加按钮 return mark_safe('<a href="%s" class="btn btn-success">添加</a>' % self.reverse_add_url()) def get_model_form_class(self): """ 获取ModelForm类 :return: """ if self.model_form_class: return self.model_form_class class AddModelForm(forms.ModelForm): class Meta: model = self.model_class fields = "__all__" return AddModelForm def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) add_btn = self.get_add_btn() # 添加按钮返回值,不为空展示,否则不展示 list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) # 注意:要传入add_btn return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list,'add_btn':add_btn}) def add_view(self, request): """ 所有的添加页面,都在此方法处理 使用ModelForm实现 :param request: :return: """ # 添加数据,使用ModelForm AddModelForm = self.get_model_form_class() if request.method == "GET": form = AddModelForm() return render(request,'stark/change.html',{'form':form}) form = AddModelForm(request.POST) # 接收POST数据 if form.is_valid(): # 验证数据 form.save() # 自动保存数据 # 反向生成url,跳转到列表页面 return redirect(self.reverse_list_url()) # 渲染页面,此时会保存表单数据 return render(request, 'stark/change.html', {'form': form}) def change_view(self, request, pk): """ 所有编辑页面 :param request: :param pk: :return: """ # 查看单条数据 obj = self.model_class.objects.filter(pk=pk).first() if not obj: return HttpResponse('数据不存在') # 获取model_form类 ModelFormClass = self.get_model_form_class() if request.method == 'GET': # instance表示生成默认值 form = ModelFormClass(instance=obj) # 渲染页面,添加和修改可以共用一个一个模板文件 return render(request, 'stark/change.html', {'form': form}) # instance = obj 表示指定给谁做修改 form = ModelFormClass(data=request.POST, instance=obj) if form.is_valid(): form.save() # 修改数据 # 跳转到列表页面 return redirect(self.reverse_list_url()) return render(request, 'stark/change.html', {'form': form}) def delete_view(self, request, pk): return HttpResponse('stark delete') def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass def reverse_list_url(self): # 反向生成访问列表的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace name = '%s:%s_%s_changelist' % (namespace, app_label, model_name) list_url = reverse(name) return list_url def reverse_add_url(self): # 反向生成添加url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace name = '%s:%s_%s_add' % (namespace, app_label, model_name) add_url = reverse(name) return add_url def reverse_edit_url(self, row): # 反向生成编辑行内容的url app_label = self.model_class._meta.app_label # app名 model_name = self.model_class._meta.model_name # 表名 namespace = self.site.namespace # 命名空间 # 拼接字符串,这里为change name = '%s:%s_%s_change' % (namespace, app_label, model_name) # 反向生成url,传入参数pk=row.pk edit_url = reverse(name, kwargs={'pk': row.pk}) return edit_url def reverse_del_url(self, row): # 反向生成删除行内容的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace # 注意:这里为del name = '%s:%s_%s_del' % (namespace, app_label, model_name) del_url = reverse(name, kwargs={'pk': row.pk}) return del_url @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
注意：添加和编辑，可以共用一个模板文件。因为它们都是用的ModelForm组件
访问页面： http://127.0.0.1:8000/stark/app01/depart/list/
修改一条数据，比如人事部
点击提交，数据就修改过来了
删除数据
删除，得弹出一个模态框，要用户提示才行
如果是一个GET请求，让用户看到一个页面
修改stark-->server-->stark.py，修改delete_view方法
from django.conf.urls import url from django.shortcuts import HttpResponse,render,redirect from types import FunctionType from django.utils.safestring import mark_safe from django.urls import reverse from django import forms class StarkConfig(object): def __init__(self,model_class,site): self.model_class = model_class self.site = site def display_checkbox(self,row=None,header=False): # 显示复选框 if header: # 输出中文 return "选择" # 注意：这里要写row.pk,不能写row.id。你不能保证每一个表的主键都是id return mark_safe('<input type="checkbox" name="pk" values="%s"/>' %row.pk) def display_edit(self, row=None, header=False): if header: return "编辑" return mark_safe( '<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a>' % self.reverse_edit_url(row)) def display_del(self, row=None, header=False): if header: return "删除" return mark_safe( '<a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a>' % self.reverse_del_url(row)) def display_edit_del(self, row=None, header=False): if header: return "操作" tpl = """<a href="%s"><i class="fa fa-edit" aria-hidden="true"></i></a></a> | <a href="%s"><i class="fa fa-trash-o" aria-hidden="true"></i></a> """ % (self.reverse_edit_url(row), self.reverse_del_url(row),) return mark_safe(tpl) order_by = [] # 需要排序的字段,由用户自定义 list_display = [] # 定义显示的列,由用户自定义 model_form_class = None # form组件需要的model_class def get_order_by(self): # 获取排序列表 return self.order_by def get_list_display(self): # 获取显示的列 return self.list_display def get_add_btn(self): # 显示添加按钮 return mark_safe('<a href="%s" class="btn btn-success">添加</a>' % self.reverse_add_url()) def get_model_form_class(self): """ 获取ModelForm类 :return: """ if self.model_form_class: return self.model_form_class class AddModelForm(forms.ModelForm): class Meta: model = self.model_class fields = "__all__" return AddModelForm def changelist_view(self, request): """ 所有URL查看列表页面 :param request: :return: """ # 根据排序列表进行排序 queryset = self.model_class.objects.all().order_by(*self.get_order_by()) add_btn = self.get_add_btn() # 添加按钮返回值,不为空展示,否则不展示 list_display = self.list_display # 定义显示的列 header_list = [] # 定义头部,用来显示verbose_name if list_display: for name_or_func in list_display: if isinstance(name_or_func,FunctionType): # 执行函数,默认显示中文 verbose_name = name_or_func(self,header=True) else: # 获取指定字段的verbose_name verbose_name = self.model_class._meta.get_field(name_or_func).verbose_name header_list.append(verbose_name) else: # 如果list_display为空,添加表名 header_list.append(self.model_class._meta.model_name) body_list = [] # 显示内容 for row in queryset: # 这里的row是对象，它表示表里面的一条数据 row_list = [] # 展示每一行数据 if not list_display: # 如果不在list_display里面 # 添加对象 row_list.append(row) body_list.append(row_list) continue for name_or_func in list_display: if isinstance(name_or_func,FunctionType): val = name_or_func(self,row=row) # 执行函数获取,传递row对象 else: # 使用反射获取对象的值 val = getattr(row, name_or_func) row_list.append(val) body_list.append(row_list) # 注意:要传入add_btn return render(request,'stark/changelist.html',{'header_list':header_list,'body_list':body_list,'add_btn':add_btn}) def add_view(self, request): """ 所有的添加页面,都在此方法处理 使用ModelForm实现 :param request: :return: """ # 添加数据,使用ModelForm AddModelForm = self.get_model_form_class() if request.method == "GET": form = AddModelForm() return render(request,'stark/change.html',{'form':form}) form = AddModelForm(request.POST) # 接收POST数据 if form.is_valid(): # 验证数据 form.save() # 自动保存数据 # 反向生成url,跳转到列表页面 return redirect(self.reverse_list_url()) # 渲染页面,此时会保存表单数据 return render(request, 'stark/change.html', {'form': form}) def change_view(self, request, pk): """ 所有编辑页面 :param request: :param pk: :return: """ # 查看单条数据 obj = self.model_class.objects.filter(pk=pk).first() if not obj: return HttpResponse('数据不存在') # 获取model_form类 ModelFormClass = self.get_model_form_class() if request.method == 'GET': # instance表示生成默认值 form = ModelFormClass(instance=obj) # 渲染页面,添加和修改可以共用一个一个模板文件 return render(request, 'stark/change.html', {'form': form}) # instance = obj 表示指定给谁做修改 form = ModelFormClass(data=request.POST, instance=obj) if form.is_valid(): form.save() # 修改数据 # 跳转到列表页面 return redirect(self.reverse_list_url()) return render(request, 'stark/change.html', {'form': form}) def delete_view(self, request, pk): """ 所有删除页面 :param request: :param pk: :return: """ if request.method == "GET": # cancel_url表示用户点击取消时,跳转到列表页面 return render(request, 'stark/delete.html', {'cancel_url': self.reverse_list_url()}) # 定位单条数据,并删除! self.model_class.objects.filter(pk=pk).delete() return redirect(self.reverse_list_url()) def wrapper(self,func): pass def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), url(r'^add/$', self.add_view, name='%s_%s_add' % info), url(r'^(?P<pk>d+)/change/', self.change_view, name='%s_%s_change' % info), url(r'^(?P<pk>d+)/del/', self.delete_view, name='%s_%s_del' % info), ] extra = self.extra_url() if extra: # 判断变量不为空 # 扩展路由 urlpatterns.extend(extra) # print(urlpatterns) return urlpatterns def extra_url(self): # 额外的路由,由调用者重构 pass def reverse_list_url(self): # 反向生成访问列表的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace name = '%s:%s_%s_changelist' % (namespace, app_label, model_name) list_url = reverse(name) return list_url def reverse_add_url(self): # 反向生成添加url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace name = '%s:%s_%s_add' % (namespace, app_label, model_name) add_url = reverse(name) return add_url def reverse_edit_url(self, row): # 反向生成编辑行内容的url app_label = self.model_class._meta.app_label # app名 model_name = self.model_class._meta.model_name # 表名 namespace = self.site.namespace # 命名空间 # 拼接字符串,这里为change name = '%s:%s_%s_change' % (namespace, app_label, model_name) # 反向生成url,传入参数pk=row.pk edit_url = reverse(name, kwargs={'pk': row.pk}) return edit_url def reverse_del_url(self, row): # 反向生成删除行内容的url app_label = self.model_class._meta.app_label model_name = self.model_class._meta.model_name namespace = self.site.namespace # 注意:这里为del name = '%s:%s_%s_del' % (namespace, app_label, model_name) del_url = reverse(name, kwargs={'pk': row.pk}) return del_url @property def urls(self): return self.get_urls() class AdminSite(object): def __init__(self): self._registry = {} self.app_name = 'stark' self.namespace = 'stark' def register(self,model_class,stark_config=None): # not None的结果为Ture if not stark_config: # 也就是说,当其他应用调用register时,如果不指定stark_config参数 # 那么必然执行下面这段代码！ # stark_config和StarkConfig是等值的！都能实例化 stark_config = StarkConfig # 添加键值对,实例化类StarkConfig,传入参数model_class # self指的是AdminSite类 self._registry[model_class] = stark_config(model_class,self) # print(self._registry) # 打印字典 """ { app01.models.UserInfo:StarkConfig(app01.models.UserInfo) app02.models.Role:RoleConfig(app02.models.Role) } """ # for k, v in self._registry.items(): # print(k,v) def get_urls(self): urlpatterns = [] for k, v in self._registry.items(): # k=modes.UserInfo,v=StarkConfig(models.UserInfo), # 封装：model_class=UserInfo，site=site对象 # k=modes.Role,v=RoleConfig(models.Role) # 封装：model_class=Role，site=site对象 app_label = k._meta.app_label model_name = k._meta.model_name urlpatterns.append(url(r'^%s/%s/' % (app_label, model_name,), (v.urls, None, None))) return urlpatterns @property def urls(self): # 调用get_urls方法 # self.app_name和self.namespace值是一样的,都是stark return self.get_urls(), self.app_name, self.namespace site = AdminSite() # 实例化类
进入目录stark-->templates-->stark，创建文件delete.html
{% extends 'stark/layout.html' %}
{% block css %}
{% endblock %}
{% block content %}
<div >
<form method="post">
{% csrf_token %}
<p>是否确定要删除？</p>
<a href="{{ cancel_url }}" class="btn btn-default">取消</a>
<button type="submit" class="btn btn-danger">确 认</button>
</form>
</div>
{% endblock %}
访问页面： http://127.0.0.1:8000/stark/app01/depart/list/
点击最后一条数据的删除
提示，是否删除
点击取消，就会跳转到列表页面
点击确认，还是会跳转到列表页面，但是数据删除了
六、自定义列表页面
默认的列表页面，它是table表格展示的。但是我们可以定制列表页面，比如使用面板
进入目录stark-->templates-->stark，创建文件custom_list.html
{% extends 'stark/layout.html' %}
{% block content %}
<h1>自定义列表页面</h1>
<div class="bs-example" data-example-id="contextual-panels">
<div class="panel panel-primary">
<div class="panel-heading">
<h3 class="panel-title">Panel title</h3>
</div>
<div class="panel-body">
Panel content
</div>
</div>
<div class="panel panel-success">
<div class="panel-heading">
<h3 class="panel-title">Panel title</h3>
</div>
<div class="panel-body">
Panel content
</div>
</div>
<div class="panel panel-info">
<div class="panel-heading">
<h3 class="panel-title">Panel title</h3>
</div>
<div class="panel-body">
Panel content
</div>
</div>
<div class="panel panel-warning">
<div class="panel-heading">
<h3 class="panel-title">Panel title</h3>
</div>
<div class="panel-body">
Panel content
</div>
</div>
<div class="panel panel-danger">
<div class="panel-heading">
<h3 class="panel-title">Panel title</h3>
</div>
<div class="panel-body">
Panel content
</div>
</div>
</div>
{% endblock %}
修改app01-->stark.py，重写changelist_view方法
from stark.server.stark import site, StarkConfig from app01 import models from django import forms from django.shortcuts import render class UserInfoConfig(StarkConfig): list_display = ['id', 'username'] class DepartModelForm(forms.ModelForm): class Meta: model = models.Depart fields = "__all__" def clean_name(self): # 定义钩子 # print(self.cleaned_data['name']) return self.cleaned_data['name'] class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox, 'name', 'tel', 'user', StarkConfig.display_edit_del] model_form_class = DepartModelForm # def get_add_btn(self): # 返回None,表示不显示添加按钮 # pass def changelist_view(self, request): # 重写changelist_view方法 # 渲染自定义的列表页面 return render(request,'stark/custom_list.html') site.register(models.UserInfo, UserInfoConfig) site.register(models.Depart, DepartConfig)
访问页面： http://127.0.0.1:8000/stark/app01/depart/list/
效果如下：
那么就可以自定义列表页面了！如果没有重写changelist_view方法，它显示默认页面
修改app01-->stark.py，注释掉changelist_view方法
from stark.server.stark import site, StarkConfig from app01 import models from django import forms from django.shortcuts import render class UserInfoConfig(StarkConfig): list_display = ['id', 'username'] class DepartModelForm(forms.ModelForm): class Meta: model = models.Depart fields = "__all__" def clean_name(self): # 定义钩子 # print(self.cleaned_data['name']) return self.cleaned_data['name'] class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox, 'name', 'tel', 'user', StarkConfig.display_edit_del] model_form_class = DepartModelForm # def get_add_btn(self): # 返回None,表示不显示添加按钮 # pass # def changelist_view(self, request): # 重写changelist_view方法 # # 渲染自定义的列表页面 # return render(request,'stark/custom_list.html') site.register(models.UserInfo, UserInfoConfig) site.register(models.Depart, DepartConfig)
刷新页面，效果如下：
七、自定制URL
假设有一个表，不要增删改功能，只要一个列表页面，怎么办？
重写get_urls方法，就可以了
修改app01-->stark.py，重写get_urls方法
from stark.server.stark import site, StarkConfig from app01 import models from django import forms from django.shortcuts import render from django.conf.urls import url class UserInfoConfig(StarkConfig): list_display = ['id', 'username'] class DepartModelForm(forms.ModelForm): class Meta: model = models.Depart fields = "__all__" def clean_name(self): # 定义钩子 # print(self.cleaned_data['name']) return self.cleaned_data['name'] class DepartConfig(StarkConfig): list_display = ['name', 'tel', 'user'] # model_form_class = DepartModelForm def get_add_btn(self): # 返回None,表示不显示添加按钮 pass # def changelist_view(self, request): # 重写changelist_view方法 # # 渲染自定义的列表页面 # return render(request,'stark/custom_list.html') def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.changelist_view, name='%s_%s_changelist' % info), ] return urlpatterns site.register(models.UserInfo, UserInfoConfig) site.register(models.Depart, DepartConfig)
注意：
1. list_display里面的字段，不能写其他的函数，比如编辑和删除。因为它们依赖一些东西
2. 必须要定义get_add_btn方法。因为在changelist_view方法中，调用了get_add_btn方法
上面2个注意事项，必须要遵守，否则启动报错，或者页面报错！
重启django项目，访问页面：
http://127.0.0.1:8000/stark/app01/depart/list/
效果如下：
访问添加页面: http://127.0.0.1:8000/stark/app01/depart/add/
会报错！
如果需要增肌除增删改查以外的url，定义extra_url方法，就可以了！
参考app02-->stark.py里面的extra_url方法
总结：
1. 排序规则 第一种方法： class UserInfoConfig(StarkConfig): order_by = ['-id'] list_display = ['id','title',StarkConfig.display_edit,StarkConfig.display_del] site.register(models.UserInfo,UserInfoConfig) 第二种方法： class UserInfoConfig(StarkConfig): list_display = ['id','title',StarkConfig.display_edit,StarkConfig.display_del] def get_order_by(self): return ['-id'] site.register(models.UserInfo,UserInfoConfig) 2. 显示列 第一种方法： class UserInfoConfig(StarkConfig): list_display = ['id','title',StarkConfig.display_edit,StarkConfig.display_del] site.register(models.UserInfo,UserInfoConfig) 第二种方法： class UserInfoConfig(StarkConfig): order_by = ['-id'] def get_list_display(self): return ['id','title',StarkConfig.display_edit,StarkConfig.display_del] 3. 添加按钮 class UserInfoConfig(StarkConfig): list_display = ['id','title',StarkConfig.display_edit,StarkConfig.display_del] def get_add_btn(self): # 显示 # return mark_safe('<a href="%s" class="btn btn-success">添加</a>' % self.reverse_add_url()) # 不显示 return None site.register(models.UserInfo,UserInfoConfig) 4. 定制ModelForm 第一种方法： class DepartModelForm(forms.ModelForm): class Meta: model = models.Depart fields = "__all__" def clean_name(self): return self.cleaned_data['name'] class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox,'id', 'name', 'tel', 'user',StarkConfig.display_edit_del] model_form_class = DepartModelForm 第二种方法： class DepartModelForm(forms.ModelForm): class Meta: model = models.Depart fields = "__all__" def clean_name(self): return self.cleaned_data['name'] class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox,'id', 'name', 'tel', 'user',StarkConfig.display_edit_del] def get_model_form_class(self): return DepartModelForm 5. 自定义列表页面 class DepartConfig(StarkConfig): list_display = [StarkConfig.display_checkbox,'id', 'name', 'tel', 'user',StarkConfig.display_edit_del] model_form_class = DepartModelForm def changelist_view(self, request): return HttpResponse('自定义列表页面') site.register(models.Depart, DepartConfig) 6. 自定制URL class RoleConfig(StarkConfig): order_by = ['-id', ] list_display = [StarkConfig.display_checkbox,'id','title'] def get_add_btn(self): return False def extra_url(self): data = [ url(r'^xxxxxxx/$', self.xxxxxx), ] return data def xxxxxx(self,request): print('....') return HttpResponse('xxxxx') def get_urls(self): info = self.model_class._meta.app_label, self.model_class._meta.model_name urlpatterns = [ url(r'^list/$', self.wrapper(self.changelist_view), name='%s_%s_changelist' % info), ] extra = self.extra_url() if extra: urlpatterns.extend(extra) return urlpatterns site.register(models.Role,RoleConfig) 7. 增加URL(除了增删改查以外的url) class RoleConfig(StarkConfig): order_by = ['-id'] # 有负号,表示降序 # 定义显示的列 list_display = [StarkConfig.display_checkbox,'id','title'] def sk2(self, request): return HttpResponse('sk2神仙水') def extra_url(self): data = [ url(r'^sk2/$', self.sk2), ] return data site.register(models.Role,RoleConfig) # 注册表
完整代码，请参考github：