Django-admin

1.启动

django启动后,会加载settings中的install_apps

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app01.apps.App01Config',
    'rest_framework',
    'corsheaders'
]

from django.contrib import admin

admin.py:
from django.contrib.admin.sites import AdminSite, site
from django.utils.module_loading import autodiscover_modules

def autodiscover():
    autodiscover_modules('admin', register_to=site) # 加载每一个app下的admin.py文件

2. 注册

admin会对注册的每个模型表添加增删改查四个url

admin.site.register(Book)

class BookConfig(admin.ModelAdmin):
    pass

admin.site.register(Book, BookConfig)

sites中有register方法

def register(self, model_or_iterable, admin_class=None, **options):
    admin_class = admin_class or ModelAdmin

如果没有传进自定义的BookConfig类,默认用ModelAdmin

class AdminSite(object):
    def __init__(self):
        self._register = {}

    def register(self, model, admin_class=None):
        admin_class = admin_class or ModelAdmin
        self._registry[model] = admin_class(model, self)

site = AdminSite()

执行每一个app下的admin.py文件

from django.contrib import admin

admin.site.register(Book, BookConfig)
admin.site.register(Publish)

3.设计url

格式: path中的函数部分为一个元组,里面第一个参数是列表,第二个和第三个是None

urlpatterns = [
    path('admin/', admin.site.urls),
    path('test/', ([
        path('index/', views.index),
                   ], None, None))
]

model._meta.model_name: 模型表的名称

model._meta.app_label :模型表所在的app的名称

django在启动的过程中,会自动加载每一个app下的apps文件,apps文件中的app名_config类有一个ready方法,会自动执行

1.启动

from django.apps import AppConfig
from django.utils.module_loading import autodiscover_modules

class StarkConfig(AppConfig):
    name = 'stark'

    def ready(self):
        autodiscover_modules("stark")

2. 注册

class AdminSite(object):
    
    def __init__(self):
        self._registry = {}

    def register(self, model, admin_class=None):
        if not admin_class:
            admin_class = ModelAdmin

        self._registry[model] = admin_class(model, self)

3. 设计url