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

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)

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#.Perfectcustomersettings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})

{#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 %}