在app中注册表的时候使用到的方法为：
admin.site.register(models.Book)
django admin的使用 1.在应用下注册你的模型表 2.admin url的规律 http://127.0.0.1:8000/admin/app01/book/ book表的查看 http://127.0.0.1:8000/admin/app01/book/add/ book表的添加 http://127.0.0.1:8000/admin/app01/book/3/change/ book表的编辑 http://127.0.0.1:8000/admin/app01/book/3/delete/ book表的删除页面 http://127.0.0.1:8000/admin/app01/publish/ publish表的查看 http://127.0.0.1:8000/admin/app01/publish/add/ publish表的添加 http://127.0.0.1:8000/admin/app01/publish/3/change/ publish表的编辑 http://127.0.0.1:8000/admin/app01/publish/3/delete/ publish表的删除页面 ps: 1.admin会给每一个注册了的生成增删改查四条url 五大关键性参数的功能 list_display 控制展示字段 注意不能放多对多字段 配置类的概念 admin启动源码 django在启动的时候会依次执行每一个应用下的admin.py文件 from django.utils.module_loading import autodiscover_modules autodiscover_modules('admin') 源码 单例模式 注册源码 class ModelAdmin(BaseModelAdmin): ... # 配置类 class AdminSite(object): def __init__(self, name='admin'): self._registry = {} # model_class class -> admin_class instance def register(self, model, admin_class=None, **options): """ Registers the given model(s) with the given admin class. The model(s) should be Model classes, not instances. If an admin class isn't given, it will use ModelAdmin (the default admin options). If keyword arguments are given -- e.g., list_display -- they'll be applied as options to the admin class. If a model is already registered, this will raise AlreadyRegistered. If a model is abstract, this will raise ImproperlyConfigured. """ if not admin_class: admin_class = ModelAdmin # Instantiate the admin class to save in the registry self._registry[model] = admin_class(model) site = AdminSite() admin.py注册语句 admin.site.register(models.Publish) # 仅仅是将注册了的模型表和以模型表为参数实例化产生的对象 # 当做键值对存入了site对象中的_registry字段