一、admin的使用
app01的admin.py文件： class BookConfig(admin.ModelAdmin): list_display=[] list_display_links=[] list_filter=[] search_fields=[] def patch(self,request,queryset): pass patch.short_desc="" actions=[patch,] admin.site.register(Book,BookConfig)
二、admin的源码分析
1.启动
加载settings中的install_apps from django.contrib import admin autodiscover_modules('admin')
2.注册
源码：django.contrib.admin.sites模块
class AdminSite(object):
def __init__(self):
self._registry = {}
def register(self,model,admin_class=None):
# 设置配置类
if not admin_class:
admin_class = ModelAdmin
self._registry[model] = admin_class(model, self)
site = AdminSite()
每一个app下的admin.py文件：
from django.contrib import admin
admin.site.register(Book,BookConfig)
admin.site.register(Publish)
3.设计urls
1 知识点 1 url(r"index/",views.index) 2 url方法的分发 # 分发 url(r"test/",([ url(r"yuan/",([ url(r"aaa/",aaa), url(r"bbb/",bbb), url(r"ccc/",ccc), ],None,None)), url(r"alex/",alex), ],None,None)) 针对Food表，url： http://127.0.0.1:8000/admin/app02/food/ http://127.0.0.1:8000/admin/app02/food/add/ http://127.0.0.1:8000/admin/app02/food/1/change/ http://127.0.0.1:8000/admin/app02/food/2/delete/ 3 model._meta.model_name ：模型表的名称 model._meta.app_label ：模型表所在app的名称 config_obj：某个model的配置类（自定义配置类或者默认配置类）对象
三、仿照admin实现一个自定义的增删改查组件
1.随之django的启动，而注册模型
#app01/apps.py
from django.apps import AppConfig
from django.utils.module_loading import autodiscover_modules
class App01Config(AppConfig):
name = 'app01'
def ready(self):
autodiscover_modules('stark')
2. 注册
# app01/stark.py
from stark.service.sites import site, ModelStark
from app01 import models
print('app01................')
class BookStark(ModelStark):
list_display = ['title', 'price', 'publishDate','publisher']
site.register(models.Book, BookStark)
site.register(models.Publish)
3 . 默认配置类ModelStark和全局组件类AdminSite
# stark/service/sites.py
from django.conf.urls import url
from django.shortcuts import HttpResponse, render
class ModelStark(object):
list_display = ["__str__"]
def __init__(self, model):
self.model = model
def list_view(self, request):
header_list = []
for field in self.list_display:
field_obj = self.model._meta.get_field(field)
header_list.append(field_obj.verbose_name)
print(header_list)
new_data_list = []
obj_list = self.model.objects.all()
for obj in obj_list:
temp = []
for field in self.list_display:
val = getattr(obj, field)
temp.append(val)
new_data_list.append(temp)
return render(request, 'list_view.html', locals())
def add_view(self, request):
return HttpResponse('add_view')
def change_view(self, request, pk):
return HttpResponse('change_view')
def del_view(self, request, pk):
return HttpResponse('del_view')
def get_urls(self):
tmp = []
tmp.append(url(r'^$', self.list_view))
tmp.append(url(r'add/$', self.add_view))
tmp.append(url(r'(d+)/delete/$', self.del_view))
tmp.append(url(r'(d+)/change/$', self.change_view))
return tmp, None, None
@property
def urls(self):
return self.get_urls()
class AdminSite(object):
def __init__(self):
self._registy = {}
def register(self, model, stark_class=None):
if not stark_class:
stark_class = ModelStark
self._registy[model] = stark_class(model)
def get_urls(self):
tmp = []
for model, config_obj in self._registy.items():
tmp.append(url(r"{}/{}/".format(model._meta.app_label, model._meta.model_name), config_obj.urls))
return tmp, None, None
@property
def urls(self):
return self.get_urls()
site = AdminSite()