from django.db import models

class Category(models.Model):
  ...

  class Meta:
    verbose_name_plural = verbose_name = "分类"  # 该模型在后台显示的名称

  def __str__(self):  # 该模型每一个实例显示其name
    return self.name

class Product(models.Model):
  ...

  class Meta:
    verbose_name_plural = verbose_name = "商品"

  def __str__(self):
    return self.name

class Order(models.Model):
  ...

  class Meta:
    verbose_name_plural = verbose_name = "订单"

  def __str__(self):
    return "{}的订单".format(self.username)

class OrderItem(models.Model):
  ...

  class Meta:
    verbose_name_plural = verbose_name = "订单条目"

  def __str__(self):
    return "{}订单条目".format(self.order)

from django.contrib import admin
from .models import Category, Product, Order, OrderItem

admin.site.site_header = 'Django-Shop后台'
admin.site.site_title = 'Django-Shop后台'


class OrderItemInline(admin.TabularInline):  # 建立内联表单, 用于将订单条目内嵌入订单的表单中
  model = OrderItem


@admin.register(Category)
class CategoryAdmin(admin.ModelAdmin):
  fields = ('name', 'slug')
  list_display = ('name', 'slug')
  list_filter = ('name', 'slug')


@admin.register(Product)
class ProductAdmin(admin.ModelAdmin):
  fields = ('name', 'slug', 'category', 'price', 'available', 'description') # 详情表单包含的字段, 支持嵌套分组(将一行展示)
  list_display = ('name', 'category', 'price', 'available', 'created', 'updated') # 列表显示字段
  list_filter = ('category', 'available')  # 列表筛选字段
  search_fields = ('name', ) # 列表可搜索字段
  list_editable = ('price', 'available') # 列表可编辑字段
@admin.register(Order)
class OrderAdmin(admin.ModelAdmin):
  fields = ('username', 'mobile', 'city', 'address', 'pay_status')
  list_display = ('username', 'mobile', 'city', 'pay_status', 'created', 'updated')
  list_filter = ('username', 'city', 'pay_status')
  search_fields = ('username', 'mobile')
  list_editable = ('pay_status', )
  inlines = [OrderItemInline] # 嵌入订单条目内联表单