Django项目：CRM(客户关系管理系统)--13--05PerfectCRM实现King_admin注册功能获取内存02

admin_class.model = model
self.registered_sites[app_name][model_name] = admin_class #注册APP

 #base_admin.py
 #Django admin 注册功能的形式
 # sites = {
 #     'crm':{
 #         'customers':CustomerAdmin,
 #         'customerfollowup':CustomerFollowUPAdmin,
 #     }
 # }

 class AdminRegisterException(Exception):  #自定义异常
     def __init__(self,msg):
         self.message = msg

 class BaseAdmin(object):#自定义方法
     list_display = ()

 class AdminSite(object):
     def __init__(self):
         self.registered_sites = {}   #传到views 里调用
     def register(self,model,admin_class=None): #默认值None 使用 BaseAdmin
         app_name = model._meta.app_label#用内置方法获取 APP名字 （crm）
         model_name = model._meta.model_name#用内置方法获取 表名  (Customer)
         if app_name not in self.registered_sites:
             self.registered_sites[app_name] = {} #创建  crm={}
         if model_name in self.registered_sites[app_name]:
             raise AdminRegisterException("app [%s] model [%s] has already registered!异常"
                                                  %(app_name,model_name))#自定义异常，
         if not  admin_class:
             admin_class = BaseAdmin  #默认值None 使用 BaseAdmin

         # self.registered_sites[app_name][model_name] = admin_class #注册APP

         #registered_sites {'crm': {'customer': <class 'crm.kingadmin.CustomerAdmin'>, 'courserecord': <class 'kingadmin.base_admin.BaseAdmin'>}}
         #把类名放到class的对象里，然后通过class的对象传到前端
         admin_class.model = model
         self.registered_sites[app_name][model_name] = admin_class #注册APP

 site = AdminSite() #实例化类  单例模式

 # registered_sites={}
 # def register(model,admin_class=None): #默认值None 使用 BaseAdmin
 #     app_name = model._meta.app_label#用内置方法获取 APP名字 （crm）
 #     model_name = model._meta.model_name#用内置方法获取 表名  (Customer)
 #     if app_name not in registered_sites:
 #         registered_sites[app_name] = {} #创建  crm={}
 #     if model_name in registered_sites[app_name]:
 #         raise AdminRegisterException("app [%s] model [%s] has already registered!异常"
 #                                              %(app_name,model_name))#自定义异常
 #     if not admin_class:
 #         admin_class = BaseAdmin  #默认值None 使用class BaseAdmin
 #     registered_sites[app_name][model_name] = admin_class #注册APP

#base_admin.py

<th >{{ admin_class.mode }}{{ admin_class }} </th>

 {#app_index.html#}

 {% extends 'king_master/king_index.html' %}

 {% block right-container-content %}

     {#从base_admin传到views，views返回的值items()方法把字典转换成列表#}
     {% for app,app_tables in site.registered_sites.items %}

         <table class="table table-hover">
               <thead>
                 <tr>
                     <h3>{{ app }}</h3>{#循环APP名字#}
                 </tr>
               </thead>

               <tbody>
                      {#上层循环的变量值，items()方法把字典转换成列表#}
                     {% for model_name,admin_class in app_tables.items %}
                         <tr>
 {#                              <th >{{ model_name }}{{ admin_class }} </th>#}
                                 <th >{{ admin_class.mode }}{{ admin_class }} </th>
                         </tr>
                     {% endfor %}
               </tbody>
         </table>
     {% endfor %}

 {% endblock %}

{#app_index.html#}