一、数据列表
设计查页面，主要展示两部分内容，表头部分和数据部分， 表头通过遍历list_display和默认要显示的编辑和删除字段。
1、数据构建
（1）service/stark.py,后台数据构建
class ModelStark(object):
"""定制配置类"""
list_display = []
def __init__(self, model, site):
self.model = model
self.site = site
'''省略其他代码'''
def list_view(self, request):
print("self.model:", self.model) # self.model: <class 'app01.models.UserInfo'>
print("list_display", self.list_display) # list_display ['pk', 'name', 'age']
data_list = self.model.objects.all() # 拿到对应表所有的对象
new_data_list = []
for obj in data_list: # 所查询表中的一个个对象
temp = []
for field in self.list_display: # field为一个个字段字符串
val = getattr(obj, field) # obj.name obj.age
temp.append(val)
new_data_list.append(temp)
return render(request, "list_view.html", locals())
'''省略其他代码'''
（2）list_view.html模板展示
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="/static/bootstrap/css/bootstrap.css">
</head>
<body>
<h4>数据列表</h4>
<div class="container">
<div class="row">
<div class="col-md-9">
<table class="table table-bordered table-striped">
<thead></thead>
<tbody>
{% for data in new_data_list %}
<tr>
{% for item in data %}
<td>{{ item }}</td>
{% endfor %}
</tr>
{% endfor %}
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>
显示效果：
注意：
（1）由于UserConfig类是ModelStark类的子类，且两边都有list_display变量。
如果list_display有值就按里面的字段展示，如果没有值按照默认的obj展示。
app01/stark.py:
# 自定义配置类
class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类
list_display = ["pk", "name", "age"]
根据父类子类关系，从调用者类里去找x，如果调用者中没有x，去父类找：
class A(object):
x = 12
def func(self):
print(self.x)
class B(A):
x = 5
b = B()
b.func() # 5
（2）字符串找对象的属性，反射
data_list = self.model.objects.all() # 拿到对应表所有的对象
new_data_list = []
for obj in data_list: # 所查询表中的一个个对象
temp = []
for field in self.list_display: # field为一个个字段字符串
val = getattr(obj, field) # obj.name obj.age
temp.append(val)
new_data_list.append(temp)
字符串不是变量名称，无法进行点字符串操作。
class Person(object):
def __init__(self, name):
self.name = name
alex = Person("alex")
s = "name"
# 直接alex.s 或者alex."name"都是取不到值的
print(getattr(alex, s)) # alex
2、编辑按钮构建
from django.conf.urls import url from django.shortcuts import HttpResponse,render class ModelStark(object): """定制配置类""" list_display = [] def __init__(self, model, site): self.model = model self.site = site def add(self, request): return HttpResponse("add") def delete(self, request, id): return HttpResponse("delete") def change(self, request, id): return HttpResponse("change") def list_view(self, request): print("self.model:", self.model) # self.model: <class 'app01.models.UserInfo'> print("list_display", self.list_display) # list_display ['pk', 'name', 'age'] data_list = self.model.objects.all() # 拿到对应表所有的对象 new_data_list = [] for obj in data_list: # 所查询表中的一个个对象 temp = [] for field in self.list_display: # field为一个个字段字符串 ['pk', 'name', 'age', edit] if callable(field): # 用于判断是否是函数，可调用的是方法，不可调用的是属性 val = field(self, obj) # edit(self, obj) obj是当前正在处理的这个记录 else: val = getattr(obj, field) # 一定要是属性才能这么去调用， obj.name obj.age temp.append(val) new_data_list.append(temp) return render(request, "list_view.html", locals()) def get_urls_2(self): temp = [] # 用name取别名app名+model名+操作名可以保证别名不会重复 model_name = self.model._meta.model_name app_label = self.model._meta.app_label temp.append(url(r"^add/", self.add, name="%s_%s_add" % (app_label, model_name))) temp.append(url(r"^(d+)/delete/", self.delete, name="%s_%s_delete" % (app_label, model_name))) temp.append(url(r"^(d+)/change/", self.change, name="%s_%s_change" % (app_label, model_name))) temp.append(url(r"^$", self.list_view, name="%s_%s_list" % (app_label, model_name))) return temp @property def urls_2(self): return self.get_urls_2(), None, None # [], None, None class StarkSite(object): """site单例类""" def __init__(self): self._registry = {} def register(self, model, stark_class=None, **options): """注册""" if not stark_class: # 如果注册的时候没有自定义配置类,执行 stark_class = ModelStark # 配置类 # 将配置类对象加到_registry字典中，键为模型类 self._registry[model] = stark_class(model, self) # _registry={'model':admin_class(model)} def get_urls(self): """构造一层url""" temp = [] for model, stark_class_obj in self._registry.items(): # model:一个模型表 # stark_class_obj:当前模型表相应的配置类对象 model_name = model._meta.model_name app_label = model._meta.app_label # 分发增删改查 temp.append(url(r"^%s/%s/" % (app_label, model_name), stark_class_obj.urls_2)) """ path('app01/userinfo/',UserConfig(Userinfo,site).urls2), path('app01/book/',ModelStark(Book,site).urls2), """ return temp @property def urls(self): return self.get_urls(), None, None site = StarkSite() # 单例对象
from app01 import models from stark.service.stark import site, ModelStark from django.utils.safestring import mark_safe from django.urls import reverse # 自定义配置类 class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类 def edit(self, obj): # 方法一： # return mark_safe("<a href='/stark/app01/userinfo/%s/change'>编辑</a>" % obj.pk) # 方法二：前面不加/就是和前面的路径拼接 # return mark_safe("<a href='%s/change'>编辑</a>" % obj.pk) # 方法三：反向解析 model_name = self.model._meta.model_name app_label = self.model._meta.app_label # _url = reverse("%s_%s_add" % (app_label, model_name)) # print("_url", _url) # _url /stark/app01/userinfo/add/ # stark/app01/userinfo/(/d+)/change _url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk, )) print("_url", _url) # _url /stark/app01/userinfo/3/change/ return mark_safe("<a href='%s/change'>编辑</a>" % obj.pk) def deletes(self, obj): model_name = self.model._meta.model_name app_label = self.model._meta.app_label _url = reverse("%s_%s_delete" % (app_label, model_name), args=(obj.pk, )) print("_url", _url) # _url /stark/app01/userinfo/3/change/ return mark_safe("<a href='%s/change'>删除</a>" % obj.pk) list_display = ["pk", "name", "age", edit, deletes] site.register(models.UserInfo, UserConfig) site.register(models.Book) print("_registry", site._registry)
注意：
（1）利用callable方法判断是函数还是属性
if callable(field): # 用于判断是否是函数，可调用的是方法，不可调用的是属性
val = field(self)
else:
val = getattr(obj, field) # 一定要是属性才能这么去调用， obj.name obj.age
temp.append(val)
（2）区分类的实例方法与函数调用及self参数
class Person(object):
def __init__(self, name):
self.name = name
def eat(self):
print(self)
print("eat.....")
# 实例方法
egon = Person("egon")
egon.eat()
"""
<__main__.Person object at 0x10401ae48>
eat.....
"""
# 函数
Person.eat(123)
"""
123
eat.....
"""
（3）阻止<a>编辑</a>转义
from django.utils.safestring import mark_safe
# 自定义配置类
class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类
def edit(self):
return mark_safe("<a>编辑</a>")
list_display = ["pk", "name", "age", edit]
显示效果：
（4）实现点击编辑进入编辑页面
startk/service/stark.py中的list_view函数中，在判断filed是函数时，给这个函数还传入一个obj也就是当前正在处理的记录对象：
class ModelStark(object):
def list_view(self, request):
for obj in data_list: # 所查询表中的一个个对象
temp = []
for field in self.list_display: # field为一个个字段字符串 ['pk', 'name', 'age', edit]
if callable(field): # 用于判断是否是函数，可调用的是方法，不可调用的是属性
val = field(self, obj) # edit(self, obj) obj是当前正在处理的这个记录
else:
val = getattr(obj, field) # 一定要是属性才能这么去调用， obj.name obj.age
temp.append(val)
new_data_list.append(temp)
前面已经实现实现了编辑按钮，现在需要在app01/stark.py中为edit方法返回值配好返回的a标签的href路径：
from app01 import models
from stark.service.stark import site, ModelStark
from django.utils.safestring import mark_safe
# 自定义配置类
class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类
def edit(self, obj):
# 方法一：
# return mark_safe("<a href='/stark/app01/userinfo/%s/change'>编辑</a>" % obj.pk)
# 方法二：前面不加/就是和前面的路径拼接
return mark_safe("<a href='%s/change'>编辑</a>" % obj.pk)
list_display = ["pk", "name", "age", edit]
显示效果：
（5）用反向解析实现路径返回
https://www.cnblogs.com/yuanchenqi/articles/7629939.html
首先给urls用name添加别名：app名+model名+操作名可以保证别名不重复
class ModelStark(object):
"""定制配置类"""
'''省略内容'''
def get_urls_2(self):
temp = []
# 用name取别名app名+model名+操作名可以保证别名不会重复
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
temp.append(url(r"^add/", self.add, name="%s_%s_add" % (app_label, model_name)))
temp.append(url(r"^(d+)/delete/", self.delete, name="%s_%s_delete" % (app_label, model_name)))
temp.append(url(r"^(d+)/change/", self.change, name="%s_%s_change" % (app_label, model_name)))
temp.append(url(r"^$", self.list_view, name="%s_%s_list" % (app_label, model_name)))
return temp
路由效果如下所示：
再在app01/stark.py中edit方法以反向解析解析路径：
from app01 import models
from stark.service.stark import site, ModelStark
from django.utils.safestring import mark_safe
from django.urls import reverse
# 自定义配置类
class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类
def edit(self, obj):
# 方法一：
# return mark_safe("<a href='/stark/app01/userinfo/%s/change'>编辑</a>" % obj.pk)
# 方法二：前面不加/就是和前面的路径拼接
# return mark_safe("<a href='%s/change'>编辑</a>" % obj.pk)
# 方法三：反向解析
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
# _url = reverse("%s_%s_add" % (app_label, model_name))
# print("_url", _url) # _url /stark/app01/userinfo/add/
# stark/app01/userinfo/(/d+)/change
_url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk, ))
print("_url", _url) # _url /stark/app01/userinfo/3/change/
return mark_safe("<a href='%s/change'>编辑</a>" % obj.pk)
list_display = ["pk", "name", "age", edit]
site.register(models.UserInfo, UserConfig)
点击按钮显示效果同上。
（6）添加删除功能
class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类
def edit(self, obj):...
def deletes(self, obj):
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
_url = reverse("%s_%s_delete" % (app_label, model_name), args=(obj.pk, ))
print("_url", _url) # _url /stark/app01/userinfo/3/change/
return mark_safe("<a href='%s/change'>删除</a>" % obj.pk)
list_display = ["pk", "name", "age", edit, deletes]
显示效果如下：
（7）添加复选框按钮
def checkbox(self, obj):
"""复选框"""
return mark_safe("<input type='checkbox'>")
显示效果：
二、构建表头并应用于所有列表对象
1、编辑编辑、删除、复选框函数，同时要实现每个表都能实现这些操作
class ModelStark(object):
"""默认类，定制配置类"""
list_display = ["__str__",]
def __init__(self, model, site):
self.model = model
self.site = site
# 删除、编辑，复选框
def edit(self, obj):
"""编辑"""
# 方法三：反向解析
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
_url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk, ))
print("_url", _url)
return mark_safe("<a href='%s/change'>编辑</a>" % obj.pk)
def deletes(self, obj):
"""删除"""
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
_url = reverse("%s_%s_delete" % (app_label, model_name), args=(obj.pk, ))
print("_url", _url)
return mark_safe("<a href='%s/change'>删除</a>" % obj.pk)
def checkbox(self, obj):
"""复选框"""
return mark_safe("<input type='checkbox'>")
'''代码省略'''
def new_list_display(self):
"""返回新的列表"""
temp = []
temp.append(ModelStark.checkbox) # 在列表中放一个checkbox名字
temp.extend(self.list_display) # 扩展进一个列表["pk","name","age"]
temp.append(ModelStark.edit) # edit函数名
temp.append(ModelStark.deletes) # deletes函数名
return temp # 返回新的列表
def list_view(self, request):
"""循环展示"""
print("self.model:", self.model) # self.model: <class 'app01.models.UserInfo'>
print("list_display", self.list_display) # list_display ['pk', 'name', 'age']
data_list = self.model.objects.all() # 拿到对应表所有的对象
"""构建表单数据"""
new_data_list = []
for obj in data_list:
temp = []
for field in self.new_list_display(): # ["__str__", ] ["pk","name","age",edit]
if callable(field):
val = field(self, obj)
else:
val = getattr(obj, field)
temp.append(val)
new_data_list.append(temp)
return render(request, "list_view.html", locals())
（1）不同的表都需要有这些按钮功能
将这些函数从自定义配置类(app01/stark.py里的UserConfig)剪切到默认类（stark/service/stark.py里的ModelStark），剩下的app01/stark.py代码如下所示：
from app01 import models
from stark.service.stark import site, ModelStark
class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类
"""自定义配置类"""
list_display = ["pk", "name", "age"]
site.register(models.UserInfo, UserConfig)
class BookConfig(ModelStark):
list_display = ['pk', 'title']
site.register(models.Book)
print("_registry", site._registry)
（2）self.list_display里现在只剩下普通字段，需要拼接出新的列表
可以注意到自定义配置类的list_display已经没有了edit，delete等函数， 因此需要返回新的列表。
class ModelStark(object):
'''省略代码''''
def new_list_display(self):
"""返回新的列表"""
temp = []
temp.append(ModelStark.checkbox) # 在列表中放一个checkbox名字
temp.extend(self.list_display) # 扩展进一个列表["pk","name","age"]
temp.append(ModelStark.edit) # edit函数名
temp.append(ModelStark.deletes) # deletes函数名
return temp # 返回新的列表
在list_view中调用新的的列表：
def list_view(self, request):
"""构建表单数据"""
new_data_list = []
for obj in data_list:
temp = []
for field in self.new_list_display(): # ["__str__", ] ["pk","name","age",edit]
if callable(field):
val = field(self, obj)
else:
val = getattr(obj, field)
temp.append(val)
new_data_list.append(temp)
return render(request, "list_view.html", locals())
（3）不同的表具有不同的自定义配置类，每个的list_display都不相同，对应表取对应的list_display
##################stark/service/stark.py###############
class ModelStark(object):
"""默认类，定制配置类"""
list_display = ["__str__",]
##################app01/stark.py##################
class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类
"""自定义配置类"""
list_display = ["pk", "name", "age"]
class BookConfig(ModelStark):
list_display = ['pk', 'title']
这里涉及到类的__str__方法使用，示例如下：
class Persoon(object):
def __init__(self, name):
self.name = name
def __str__(self):
return self.name
alex = Persoon("alex")
print(alex.__str__)
print(alex.__str__())
print(str(alex))
"""'
<bound method Persoon.__str__ of <__main__.Persoon object at 0x10401ae48>>
alex
alex
"""
（4）根据models.py中模型是否具有def __str__(self)，页面上字段显示不同
2、构建表头
# -*- coding:utf-8 -*- __author__ = 'Qiushi Huang' from django.conf.urls import url from django.shortcuts import HttpResponse, render from django.utils.safestring import mark_safe from django.urls import reverse class ModelStark(object): """默认类，定制配置类""" list_display = ["__str__",] def __init__(self, model, site): self.model = model self.site = site # 删除、编辑，复选框 def edit(self, obj=None, header=False): """编辑""" if header: # 如果是表头显示操作 return "操作" # 方法三：反向解析 model_name = self.model._meta.model_name app_label = self.model._meta.app_label _url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk, )) print("_url", _url) return mark_safe("<a href='%s/change'>编辑</a>" % obj.pk) def deletes(self, obj=None, header=False): """删除""" if header: # 如果是表头显示操作 return "操作" model_name = self.model._meta.model_name app_label = self.model._meta.app_label _url = reverse("%s_%s_delete" % (app_label, model_name), args=(obj.pk, )) print("_url", _url) return mark_safe("<a href='%s/change'>删除</a>" % obj.pk) def checkbox(self, obj=None, header=False): """复选框""" if header: # 如果是表头显示操作 return mark_safe("<input id='choice' type='checkbox'>") return mark_safe("<input class='choice_item' type='checkbox'>") def add(self, request): return HttpResponse("add") def delete(self, request, id): return HttpResponse("delete") def change(self, request, id): return HttpResponse("change") def new_list_display(self): """返回新的列表""" temp = [] temp.append(ModelStark.checkbox) # 在列表中放一个checkbox名字 temp.extend(self.list_display) # 扩展进一个列表["pk","name","age"] temp.append(ModelStark.edit) # edit函数名 temp.append(ModelStark.deletes) # deletes函数名 return temp # 返回新的列表 def list_view(self, request): """循环展示""" print("self.model:", self.model) # self.model: <class 'app01.models.UserInfo'> print("list_display", self.list_display) # list_display ['pk', 'name', 'age'] list_display ['__str__'] data_list = self.model.objects.all() # 拿到对应表所有的对象 """构建表头""" header_list = [] print("header", self.new_list_display()) # [checkbox ,"__str__", edit ,deletes] for field in self.new_list_display(): if callable(field): # 如果是函数 val = field(self, header=True) header_list.append(val) else: # 如果是字符串 if field == "__str__": header_list.append(self.model._meta.model_name.upper()) # 当前模型表名 else: # 如果不是"__str__" # header_list.append(field) val = self.model._meta.get_field(field).verbose_name header_list.append(val) """构建表单数据""" new_data_list = [] for obj in data_list: temp = [] for field in self.new_list_display(): # ["__str__", ] ["pk","name","age",edit] if callable(field): val = field(self, obj) else: val = getattr(obj, field) temp.append(val) new_data_list.append(temp) return render(request, "list_view.html", locals()) def get_urls_2(self): temp = [] # 用name取别名app名+model名+操作名可以保证别名不会重复 model_name = self.model._meta.model_name app_label = self.model._meta.app_label temp.append(url(r"^add/", self.add, name="%s_%s_add" % (app_label, model_name))) temp.append(url(r"^(d+)/delete/", self.delete, name="%s_%s_delete" % (app_label, model_name))) temp.append(url(r"^(d+)/change/", self.change, name="%s_%s_change" % (app_label, model_name))) temp.append(url(r"^$", self.list_view, name="%s_%s_list" % (app_label, model_name))) return temp @property def urls_2(self): return self.get_urls_2(), None, None # [], None, None class StarkSite(object): """site单例类""" def __init__(self): self._registry = {} def register(self, model, stark_class=None, **options): """注册""" if not stark_class: # 如果注册的时候没有自定义配置类,执行 stark_class = ModelStark # 配置类 # 将配置类对象加到_registry字典中，键为模型类 self._registry[model] = stark_class(model, self) # _registry={'model':admin_class(model)} def get_urls(self): """构造一层url""" temp = [] for model, stark_class_obj in self._registry.items(): # model:一个模型表 # stark_class_obj:当前模型表相应的配置类对象 model_name = model._meta.model_name app_label = model._meta.app_label # 分发增删改查 temp.append(url(r"^%s/%s/" % (app_label, model_name), stark_class_obj.urls_2)) """ path('app01/userinfo/',UserConfig(Userinfo,site).urls2), path('app01/book/',ModelStark(Book,site).urls2), """ return temp @property def urls(self): return self.get_urls(), None, None site = StarkSite() # 单例对象
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <link rel="stylesheet" href="/static/bootstrap/css/bootstrap.css"> <script src="/static/js/jquery-1.12.4.min.js"></script> </head> <body> <h4>数据列表</h4> <div class="container"> <div class="row"> <div class="col-md-9"> <table class="table table-bordered table-striped"> <thead> <tr> {% for item in header_list %} <th>{{ item }}</th> {% endfor %} </tr> </thead> <tbody> {% for data in new_data_list %} <tr> {% for item in data %} <td>{{ item }}</td> {% endfor %} </tr> {% endfor %} </tbody> </table> </div> </div> </div> <script> // 复选框全选 $("#choice").click(function () { if($(this).prop("checked")) { // 如果是选中状态 $(".choice_item").prop("checked", true); } else { $(".choice_item").prop("checked", false) } }) </script> </body> </html>
（1）__name__
__name__是标识模块的名字的一个系统变量；__main__一般作为函数的入口，类似于C语言，尤其在大型工程中，常常有if __name__ == "__main__":来表明整个工程开始运行的入口。
def foo():
return
print(foo.__name__) # foo
（2）将表头自定义函数显示改为中文
def list_view(self, request):
"""构建表头"""
header_list = []
print("header", self.new_list_display()) # [checkbox ,"__str__", edit ,deletes]
for field in self.new_list_display():
if callable(field):
# 如果是函数
val = field(self, header=True)
header_list.append(val)
else:
# 如果是字符串
if field == "__str__":
header_list.append(self.model._meta.model_name.upper()) # 当前模型表名
else:
# 如果不是"__str__"
header_list.append(field)
当callable判断field是函数时，给函数传参数header=True。修改编辑、删除、选择函数：
# 删除、编辑，复选框
def edit(self, obj=None, header=False):
"""编辑"""
if header:
# 如果是表头显示操作
return "操作"
# 方法三：反向解析
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
_url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk, ))
print("_url", _url)
return mark_safe("<a href='%s/change'>编辑</a>" % obj.pk)
def deletes(self, obj=None, header=False):
"""删除"""
if header:
# 如果是表头显示操作
return "操作"
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
_url = reverse("%s_%s_delete" % (app_label, model_name), args=(obj.pk, ))
print("_url", _url)
return mark_safe("<a href='%s/change'>删除</a>" % obj.pk)
def checkbox(self, obj=None, header=False):
"""复选框"""
if header:
# 如果是表头显示操作
return "选择"
return mark_safe("<input type='checkbox'>")
显示效果：
（3）将普通字段修改为中文
def list_view(self, request):
"""构建表头"""
header_list = []
print("header", self.new_list_display()) # [checkbox ,"__str__", edit ,deletes]
for field in self.new_list_display():
if callable(field):
# 如果是函数
val = field(self, header=True)
header_list.append(val)
else:
# 如果是字符串
if field == "__str__":
header_list.append(self.model._meta.model_name.upper()) # 当前模型表名
else:
# 如果不是"__str__"
# header_list.append(field)
val = self.model._meta.get_field(field).verbose_name
header_list.append(val)
然后在models.py中为字段添加verbose_name属性
class UserInfo(models.Model):
name = models.CharField(verbose_name="姓名", max_length=32)
age = models.IntegerField(verbose_name="年龄")
def __str__(self):
return self.name
class Book(models.Model):
title = models.CharField(verbose_name="书名",max_length=32)
def __str__(self):
return self.title
显示效果：
注意在这里app01/stark.py中的list_display是不能添加“pk”的
class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类
"""自定义配置类"""
list_display = ["name", "age"]
site.register(models.UserInfo, UserConfig)
class BookConfig(ModelStark):
list_display = ['title']
site.register(models.Book)
print("_registry", site._registry)
因为它的主键是"id"，“pk”只能是在查询的时候使用。且如果添加“id”的话，这个值也无法改为中文。
class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类
"""自定义配置类"""
list_display = ["id", "name", "age"]
显示效果：
（4）复选框点击全选事件
将表头改为复选框，并给一个id:
def checkbox(self, obj=None, header=False):
"""复选框"""
if header:
# 如果是表头显示操作
return mark_safe("<input id='choice' type='checkbox'>")
return mark_safe("<input class='choice_item' type='checkbox'>")
复选框点击全选事件：
<script>
// 复选框全选
$("#choice").click(function () {
if($(this).prop("checked")) {
// 如果是选中状态
$(".choice_item").prop("checked", true);
} else {
$(".choice_item").prop("checked", false)
}
})
</script>
注意这里使用js中的prop()方法来查看复选框是否选中，或设置复选框为选中或未选中状态。
三、设计list_display_links
1、定制列可以点击跳转
class ModelStark(object): '''其他代码省略''' def new_list_display(self): """返回新的列表""" temp = [] temp.append(ModelStark.checkbox) # 在列表中放一个checkbox名字 temp.extend(self.list_display) # 扩展进一个列表["pk","name","age"] if not self.list_display_links: # 如果没有值 temp.append(ModelStark.edit) # temp.append(ModelStark.edit) # edit函数名 temp.append(ModelStark.deletes) # deletes函数名 return temp # 返回新的列表 def list_view(self, request): """循环展示""" print("self.model:", self.model) # self.model: <class 'app01.models.UserInfo'> print("list_display", self.list_display) # list_display ['pk', 'name', 'age'] list_display ['__str__'] data_list = self.model.objects.all() # 拿到对应表所有的对象 """构建表头""" header_list = [] print("header", self.new_list_display()) # [checkbox ,"__str__", edit ,deletes] for field in self.new_list_display(): if callable(field): # 如果是函数 val = field(self, header=True) header_list.append(val) else: # 如果是字符串 if field == "__str__": header_list.append(self.model._meta.model_name.upper()) # 当前模型表名 else: # 如果不是"__str__" # header_list.append(field) val = self.model._meta.get_field(field).verbose_name header_list.append(val) """构建表单数据""" new_data_list = [] for obj in data_list: temp = [] for field in self.new_list_display(): # ["__str__", ] ["pk","name","age",edit] if callable(field): val = field(self, obj) else: val = getattr(obj, field) if field in self.list_display_links: model_name = self.model._meta.model_name app_label = self.model._meta.app_label _url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk,)) val = mark_safe("<a href='%s'>%s</a>" % (_url, val)) temp.append(val) new_data_list.append(temp) return render(request, "list_view.html", locals())
不再拼接edit函数名，直接通过点击普通字段进入编辑页面。在构建表单数据时，判断字段是否在list_display_links中，如果在的话通过反向解析生成a标签指向的地址。
再在app01/stark.py的自定义配置类添加list_display_links：
class UserConfig(ModelStark): # UserConfig是ModelStark的一个子类
"""自定义配置类"""
list_display = ["id", "name", "age"]
list_display_links = ["name"]
site.register(models.UserInfo, UserConfig)
class BookConfig(ModelStark):
list_display = ['title']
list_display_links = ["title"]
显示效果：
2、将获取的应用名、模型名组成url定义为函数
class ModelStark(object):
def new_list_display(self):
"""返回新的列表"""
temp = []
temp.append(ModelStark.checkbox) # 在列表中放一个checkbox名字
temp.extend(self.list_display) # 扩展进一个列表["pk","name","age"]
if not self.list_display_links:
# 如果没有值
temp.append(ModelStark.edit)
# temp.append(ModelStark.edit) # edit函数名
temp.append(ModelStark.deletes) # deletes函数名
return temp # 返回新的列表
def get_change_url(self,obj):
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
_url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk,))
return _url
def get_delete_url(self, obj):
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
_url = reverse("%s_%s_delete" % (app_label, model_name), args=(obj.pk,))
return _url
def get_add_url(self):
model_name = self.model._meta.model_name
app_label = self.model._meta.app_label
_url = reverse("%s_%s_add" % (app_label, model_name))
return _url
def get_list_url(self):.....
将删除、编辑、复选框等函数内的url拼接代码替换后：
# -*- coding:utf-8 -*- __author__ = 'Qiushi Huang' from django.conf.urls import url from django.shortcuts import HttpResponse, render from django.utils.safestring import mark_safe from django.urls import reverse class ModelStark(object): """默认类，定制配置类""" list_display = ["__str__",] list_display_links = [] def __init__(self, model, site): self.model = model self.site = site # 删除、编辑，复选框 def edit(self, obj=None, header=False): """编辑""" if header: # 如果是表头显示操作 return "操作" _url = self.get_change_url(obj) return mark_safe("<a href='%s'>编辑</a>" % _url) def deletes(self, obj=None, header=False): """删除""" if header: # 如果是表头显示操作 return "操作" _url = self.get_delete_url(obj) # return mark_safe("<a href='%s/change'>删除</a>" % obj.pk) return mark_safe("<a href='%s/'>删除</a>" % _url) def checkbox(self, obj=None, header=False): """复选框""" if header: # 如果是表头显示操作 return mark_safe("<input id='choice' type='checkbox'>") return mark_safe("<input class='choice_item' type='checkbox'>") def add_view(self, request): return HttpResponse("add") def delete_view(self, request, id): return HttpResponse("delete") def change_view(self, request, id): return HttpResponse("change") def new_list_display(self): """返回新的列表""" temp = [] temp.append(ModelStark.checkbox) # 在列表中放一个checkbox名字 temp.extend(self.list_display) # 扩展进一个列表["pk","name","age"] if not self.list_display_links: # 如果没有值 temp.append(ModelStark.edit) # temp.append(ModelStark.edit) # edit函数名 temp.append(ModelStark.deletes) # deletes函数名 return temp # 返回新的列表 def get_change_url(self,obj): model_name = self.model._meta.model_name app_label = self.model._meta.app_label _url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk,)) return _url def get_delete_url(self, obj): model_name = self.model._meta.model_name app_label = self.model._meta.app_label _url = reverse("%s_%s_delete" % (app_label, model_name), args=(obj.pk,)) return _url def get_add_url(self): model_name = self.model._meta.model_name app_label = self.model._meta.app_label _url = reverse("%s_%s_add" % (app_label, model_name)) return _url def get_list_url(self): model_name = self.model._meta.model_name app_label = self.model._meta.app_label _url = reverse("%s_%s_list" % (app_label, model_name)) return _url def list_view(self, request): """循环展示""" print("self.model:", self.model) # self.model: <class 'app01.models.UserInfo'> print("list_display", self.list_display) # list_display ['pk', 'name', 'age'] list_display ['__str__'] data_list = self.model.objects.all() # 拿到对应表所有的对象 """构建表头""" header_list = [] print("header", self.new_list_display()) # [checkbox ,"__str__", edit ,deletes] for field in self.new_list_display(): if callable(field): # 如果是函数 val = field(self, header=True) header_list.append(val) else: # 如果是字符串 if field == "__str__": header_list.append(self.model._meta.model_name.upper()) # 当前模型表名 else: # 如果不是"__str__" # header_list.append(field) val = self.model._meta.get_field(field).verbose_name header_list.append(val) """构建表单数据""" new_data_list = [] for obj in data_list: temp = [] for field in self.new_list_display(): # ["__str__", ] ["pk","name","age",edit] if callable(field): val = field(self, obj) else: val = getattr(obj, field) if field in self.list_display_links: # _url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk,)) _url = self.get_change_url(obj) val = mark_safe("<a href='%s'>%s</a>" % (_url, val)) temp.append(val) new_data_list.append(temp) # 构建一个查看url add_url = self.get_add_url() return render(request, "list_view.html", locals()) def get_urls_2(self): temp = [] # 用name取别名app名+model名+操作名可以保证别名不会重复 model_name = self.model._meta.model_name app_label = self.model._meta.app_label temp.append(url(r"^add/", self.add_view, name="%s_%s_add" % (app_label, model_name))) temp.append(url(r"^(d+)/delete/", self.delete_view, name="%s_%s_delete" % (app_label, model_name))) temp.append(url(r"^(d+)/change/", self.change_view, name="%s_%s_change" % (app_label, model_name))) temp.append(url(r"^$", self.list_view, name="%s_%s_list" % (app_label, model_name))) return temp @property def urls_2(self): return self.get_urls_2(), None, None # [], None, None class StarkSite(object): """site单例类""" def __init__(self): self._registry = {} def register(self, model, stark_class=None, **options): """注册""" if not stark_class: # 如果注册的时候没有自定义配置类,执行 stark_class = ModelStark # 配置类 # 将配置类对象加到_registry字典中，键为模型类 self._registry[model] = stark_class(model, self) # _registry={'model':admin_class(model)} def get_urls(self): """构造一层url""" temp = [] for model, stark_class_obj in self._registry.items(): # model:一个模型表 # stark_class_obj:当前模型表相应的配置类对象 model_name = model._meta.model_name app_label = model._meta.app_label # 分发增删改查 temp.append(url(r"^%s/%s/" % (app_label, model_name), stark_class_obj.urls_2)) """ path('app01/userinfo/',UserConfig(Userinfo,site).urls2), path('app01/book/',ModelStark(Book,site).urls2), """ return temp @property def urls(self): return self.get_urls(), None, None site = StarkSite() # 单例对象