Django项目：CRM(客户关系管理系统)--12--05PerfectCRM实现King_admin注册功能获取内存01

 #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

 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

site.register(models.Customer,CustomerAdmin)
site.register(models.CourseRecord)

 #kingadmin.py

 from crm import models
 #print("kingadmin crm",models.Customer)

 # from king_admin.base_admin import register,BaseAdmin
 from king_admin.base_admin import site,BaseAdmin

 #05客户信息表
 class CustomerAdmin(BaseAdmin):
     #显示的字段(不能包含ManyToManyField)
     list_display= ('id','name','qq','consultant','source','consult_content','status','date')

 # register(models.Customer,CustomerAdmin)
 # register(models.CourseRecord)

 site.register(models.Customer,CustomerAdmin)
 site.register(models.CourseRecord)

#kingadmin.py

print("registered_sites",base_admin.site.registered_sites)
return render(request, 'king_admin/app_index.html', {"site": base_admin.site})

 #views.py
 from django.shortcuts import render

 # from django import conf #配置文件
 # print("dj conf:",conf) #配置文件
 # print("dj conf:",conf.settings)#配置文件.设置

 from king_admin import app_config #自动调用  动态加载类和函数

 # from king_admin.base_admin import registered_sites # registered_sites={}
 from king_admin import base_admin

 def app_index(request):
     # for app in conf.settings.INSTALLED_APPS:
     #     print(app)#循环打印 配置文件.设置.安装应用程序#.Perfectcustomer\settings里的INSTALLED_APPS列表

     # print("registered_sites",registered_sites)
     # return render(request, 'king_admin/app_index.html')

     # print("registered_sites", base_admin.registered_sites)
     # return render(request, 'king_admin/app_index.html')

     print("registered_sites",base_admin.site.registered_sites)
     return render(request, 'king_admin/app_index.html', {"site": base_admin.site})

#views.py

 {#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>
                         </tr>
                     {% endfor %}
               </tbody>
         </table>
     {% endfor %}

 {% endblock %}

{#app_index.html#}