启动

启动Django项目时，加载app模块(在setting.py文件中)

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加载Xadmin app中apps.py模块里的XadminConfig类

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

class XadminConfig(AppConfig):
    name = 'Xadmin'

    def ready(self):
        autodiscover_modules('Xadmin')

Django启动后会扫描每个app中Xadmin.py的文件，并执行

注册

#（在django注册时需要单例对象admin.site）
admin.site.register(models.Author)

在Xadmin.py中注册,自己写Xadmin源码,生成单例对象site（路径：Xadmin app中 service/Xadmin.py）


class ModelXadmin(object):
    def __init__(self, model, site):
        self.model = model
        self.site = site


class XAdminSite(object):
    def __init__(self, name='admin'):
        self._registry = {}

    def register(self, model, admin_class=None, **options):
        if not admin_class:
            admin_class = ModelXadmin

            self._registry[model] = admin_class(model, self)  # {Book:ModelAdmin(Book)}


site = XAdminSite()

在app中引Xadmin模块

先在app01中创建表，app02中创建表
app01/Xadmin.py

from Xadmin.service.Xadmin import site
from app01.models import *
# Register your models here.

site.register(Book)
site.register(Publish)
site.register(Author)
site.register(AuthorDetail)

app02/Xadmin.py

from Xadmin.service.Xadmin import site
from app02.models import *
# Register your models here.

site.register(Order)

设计URL

在项目中的urls.py中写url

from django.conf.urls import url
from django.contrib import admin
from Xadmin.service.Xadmin import site

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^Xadmin/', site.urls),
]

site中暂时没有urls方法，回到Xadmin app中service/Xadmin.py中添加urls方法

from django.conf.urls import url
from django.shortcuts import HttpResponse
class ModelXadmin(object):
    def __init__(self, model, site):
        self.model = model
        self.site = site


class XAdminSite(object):
    def __init__(self, name='admin'):
        self._registry = {}

    def list_view(self, request):
        return HttpResponse("list_view")

    def add_view(self, request):
        return HttpResponse("add_view")

    def change_view(self, request, id):
        return HttpResponse("change_view")

    def delete_view(self, request, id):
        return HttpResponse("delete_view")


    def get_urls2(self):  # 二级路径 增删改查
        temp = []

        temp.append(url(r'^$', self.list_view))  # 查
        temp.append(url(r'^add/', self.add_view))  # 增
        temp.append(url(r'^(\d+)/change/', self.change_view))  # 改
        temp.append(url(r'^(\d+)/delete/', self.delete_view))  # 删

        return temp


    @property  # 做一个静态方法， 调用的时候不需要加括号
    def urls2(self):

        return self.get_urls2(), None, None


    def get_urls(self):  # 一级路径 Book, Publish, Author, AuthorDetail
        temp = []
        for model, admin_class_obj in self._registry.items():
            app_name = model._meta.app_label
            model_name = model._meta.model_name

            temp.append(url(r'^{0}/{1}/'.format(app_name, model_name), self.urls2), )
            return temp

    @property  # 做一个静态方法
    def urls(self):

        return self.get_urls(),None,None


    def register(self, model, admin_class=None, **options):
        if not admin_class:
            admin_class = ModelXadmin

        self._registry[model] = admin_class(model, self)  # {Book:ModelAdmin(Book)}


site = XAdminSite()

可以登录Xadmin管理后台查看相关信息。
http://127.0.0.1:8000/Xadmin/app01/book/
http://127.0.0.1:8000/Xadmin/app01/book/add/
...其他路径

为了解决每个页面显示的内容与配置不一样，于是将二级分发转到ModelXadmin类中，以便显示models中不同的类的数据与对应的Config：

from django.conf.urls import url
from django.shortcuts import HttpResponse, render
class ModelXadmin(object):
    def __init__(self, model, site):
        self.model = model
        self.site = site

    def list_view(self, request):
        print(self.model)
        list_data = self.model.objects.all()
        return render(request, "list_view.html", {"list_data": list_data})

    def add_view(self, request):
        return HttpResponse("add_view")

    def change_view(self, request, id):
        return HttpResponse("change_view")

    def delete_view(self, request, id):
        return HttpResponse("delete_view")


    def get_urls2(self):  # 二级路径 增删改查
        temp = []

        temp.append(url(r'^$', self.list_view))  # 查
        temp.append(url(r'^add/', self.add_view))  # 增
        temp.append(url(r'^(\d+)/change/', self.change_view))  # 改
        temp.append(url(r'^(\d+)/delete/', self.delete_view))  # 删

        return temp


    @property  # 做一个静态方法
    def urls2(self):

        return self.get_urls2(), None, None


class XAdminSite(object):
    def __init__(self, name='admin'):
        self._registry = {}


    def get_urls(self):  # 一级路径 Book, Publish, Author, AuthorDetail
        temp = []
        for model, admin_class_obj in self._registry.items():
            app_name = model._meta.app_label
            model_name = model._meta.model_name

            temp.append(url(r'^{0}/{1}/'.format(app_name, model_name), admin_class_obj.urls2), )
        return temp

    @property  # 做一个静态方法
    def urls(self):

        return self.get_urls(),None,None


    def register(self, model, admin_class=None, **options):
        if not admin_class:
            admin_class = ModelXadmin

        self._registry[model] = admin_class(model, self)  # {Book:ModelAdmin(Book)}


site = XAdminSite()