01用户模块模型定义_哔哩哔哩_bilibili 本博客借鉴至大佬的视频学习笔记
用户模块及商品数据表结构设计
from ckeditor.fields import RichTextField # pip install django-ckeditor
from django.db import models
# Create your models here.
# from wx.richtext import RichTextField
from common.db import BaseModel
class GoodsGroup(BaseModel):
"""商品分类"""
name = models.CharField(verbose_name="分类名称", help_text="分类名称", max_length=15,blank=True,null=True)
image = models.CharField(verbose_name="图片链接", help_text="图片链接", max_length=200, blank=True, null=True)
status = models.BooleanField(verbose_name="是否启用", help_text="是否启用", default=False,blank=True,null=True)
class Meta:
db_table = 'goods_group'
verbose_name = "商品分类表"
verbose_name_plural = verbose_name
def __str__(self):
return self.name
class Goods(BaseModel):
"""商品"""
group = models.ForeignKey('GoodsGroup', verbose_name="分类", help_text="分类", max_length=15, on_delete=models.CASCADE)
image = models.CharField(verbose_name="图片链接", help_text="图片链接", max_length=200, blank=True, null=True)
title = models.CharField(verbose_name="标题", help_text="标题", max_length=20, blank=True,null=True)
desc = models.CharField(verbose_name="商品描述", help_text="商品描述", max_length=200, blank=True,null=True)
price = models.DecimalField(verbose_name="商品价格", help_text="商品价格", max_digits=10, decimal_places=2, blank=True,null=True)
cover = models.ImageField(verbose_name="封面图链接", help_text="封面图链接", max_length=200, blank=True,null=True)
stock = models.IntegerField(verbose_name="库存", help_text="库存", blank=True, null=True, default=1)
sales = models.IntegerField(verbose_name="销量", help_text="销量", blank=True, null=True, default=0)
is_on = models.BooleanField(verbose_name="是否上架", help_text="是否上架", blank=True, null=True, default=False)
recommend = models.BooleanField(verbose_name="是否推荐", help_text="是否推荐", blank=True, null=True, default=False)
class Meta:
db_table = 'goods'
verbose_name = '商品表'
verbose_name_plural = verbose_name
def __str__(self):
return self.title
class Detail(BaseModel):
"""商品详情"""
goods = models.OneToOneField('Goods', verbose_name="商品", on_delete=models.CASCADE, max_length=200)
producer = models.CharField(verbose_name='厂商', help_text='厂商', max_length=200, blank=True,null=True)
norms = models.CharField(verbose_name='规格', help_text='规格', max_length=200, blank=True,null=True)
details = RichTextField(verbose_name='商品详情', help_text='商品详情', max_length=200,blank=True,null=True)
class Meta:
db_table = 'details'
verbose_name = '详情'
verbose_name_plural = verbose_name
def __str__(self):
return self.goods
class GoodsBanner(BaseModel):
"""商品轮播图"""
title = models.CharField(verbose_name='轮播图名称', help_text='轮播图名称', max_length=20, blank=True)
image = models.ImageField(verbose_name='轮播图链接', help_text='轮播图链接', max_length=200, blank=True)
# url = models.CharField(verbose_name='跳转的地址',help_text='跳转的地址',max_length=200,blank=True)
status = models.BooleanField(verbose_name='是否启用', help_text='是否启用', default=False,blank=True,null=True)
seq = models.IntegerField(verbose_name='顺序', help_text='顺序', default=1, blank=True,null=True)
class Meta:
db_table = 'banner'
verbose_name = '首页商品轮播'
verbose_name_plural = verbose_name
def __str__(self):
return self.title
class Collect(models.Model):
"""商品收藏"""
user = models.ForeignKey('users.User', help_text='用户ID', verbose_name='用户ID', on_delete=models.CASCADE,blank=True,null=True)
goods = models.ForeignKey('goods.Goods', help_text="商品ID", verbose_name="商品ID", on_delete=models.CASCADE,blank=True,null=True)
class Meta:
db_table = 'collect'
verbose_name = "收藏商品"
verbose_name_plural = verbose_name
def __str__(self):
return self.goods
Django自带admin配置
from django.contrib import admin
from .models import GoodsGroup,Goods,Detail,GoodsBanner,Collect
# Register your models here.
@admin.register(GoodsGroup)
class GoodsGroupAdmin(admin.ModelAdmin):
list_display = ['name','status']
@admin.register(Goods)
class GoodsAdmin(admin.ModelAdmin):
list_display = ['title','group','price','stock','sales','is_on']
@admin.register(Detail)
class DetailGroupAdmin(admin.ModelAdmin):
list_display = ['goods', 'producer','norms']
@admin.register(GoodsBanner)
class GoodsBannerAdmin(admin.ModelAdmin):
list_display = ['title', 'status']
@admin.register(Collect)
class CollectAdmin(admin.ModelAdmin):
list_display = ['user', 'goods']
商品首页接口实现
class IndexView(APIView):
"""首页数据展示"""
def get(self,request):
"""返回轮播图、商品分类"""
group = GoodsGroup.objects.filter(status=True)
groupSer =GoodsGroupSerializer(group,many=True)
# 轮播图
banner = GoodsBanner.objects.filter(status=True)
bannerSer = GoodsBannerSerializer(banner,many=True)
# 推荐的商品
goods = Goods.objects.filter(recommend=True)
goodsSer = GoodsSerializer(goods,many=True)
# 返回数据
result = {
'banner': bannerSer.data,
'goods':goodsSer.data,
'group':groupSer.data
}
return Response({"message":'ok','data':result},status=status.HTTP_200_OK)
# 商品首页
path('index/', IndexView.as_view()),
商品列表获取和分类排序接口
# view
class GoodsView(ReadOnlyModelViewSet):
""""商品列表接口"""
serializer_class = GoodsSerializer
# 选择上架的商品
queryset = Goods.objects.filter(is_on=True),
# 实现商品分类和推荐类过滤
filterset_fields = ('group','recommend')
# 通过价格和销量排序
ordering_fields =('sales','price','create_time')
# url
# 商品列表接口
path('goods/', GoodsView.as_view({"get":'list'})),
# 单个商品获取
path('goods/<int:pk>/', GoodsView.as_view({"get":'retrieve'})),
# setting
# 过滤器信息配置、排序器配置
'DEFAULT_FILTER_BACKENDS':['django_filters.rest_framework.DjangoFilterBackend',
'rest_framework.filters.OrderingFilter']
# 注册
'django_filters',
商品的收藏与取消收藏接口
# view
class CollectView(mixins.RetrieveModelMixin,
mixins.CreateModelMixin
,mixins.ListModelMixin,mixins.DestroyModelMixin,GenericViewSet):
"""
商品收藏与取消
create: 收藏
delete: 取消
list: 收藏列表
"""
queryset = Collect.objects.all()
serializer_class = CollectSerializer
permission_classes = [IsAuthenticated,CollectPermissions]
filterset_fields = ("user",)
def create(self, request, *args, **kwargs):
# 获取请求参数
user = request.user
params_user_id = request.data.get('user')
# 检验请求参数中的id是否当前登录的用户ID
if user.id != params_user_id:
return Response({'error':'你没有用户权限访问该信息'},status=status.HTTP_400_BAD_REQUEST)
return super().create(request, *args, **kwargs)
def list(self, request, *args, **kwargs):
"""商品收藏列表"""
queryset = self.filter_queryset(self.get_queryset())
queryset = queryset.filter(user=request.user)
serializer = self.get_serializer(queryset, many=True)
return Response(serializer.data)
# perssion
from rest_framework import permissions
class CollectPermissions(permissions.BasePermission):
"""
Custom permission to only allow owners of an object to edit it.
"""
def has_object_permission(self, request, view, obj):
# 判断是否是管理员
if request.user.is_superuser:
return True
# 判断当前的用户对象和登录的用户对象是否是同一个，防止越权
return obj == request.user
# url
# 收藏商品
path('collect/', CollectView.as_view({"post":'create','get':'list'})),
# 取消收藏
path('collect/del/<int:pk>/', CollectView.as_view({"delete":'destroy'})),
商品购物车的接口实现： 购物车添加数量、修改商品购物车状态、加购商品
# serializer
from rest_framework import serializers
from apps.cart.models import Cart
from apps.goods.serializers import GoodsSerializer
class CartSerializer(serializers.ModelSerializer):
"""用户的模型序列化器-写入"""
class Meta:
model = Cart
fields = '__all__'
class ReadInfoSerializer(serializers.ModelSerializer):
"""用户的模型序列化器-读取"""
goods =GoodsSerializer()
class Meta:
model = Cart
fields = '__all__'
# view
from rest_framework import status
from rest_framework.response import Response
from rest_framework.viewsets import GenericViewSet,mixins
from .models import Cart
from .serializers import CartSerializer, ReadInfoSerializer
# Create your views here.
class CartViecw(GenericViewSet,
mixins.CreateModelMixin,
mixins.UpdateModelMixin,
mixins.DestroyModelMixin,
mixins.ListModelMixin):
queryset = Cart.objects.all()
serializer_class = CartSerializer
def get_serializer_class(self):
# 实现读写操作使用不同的序列化器
if self.action == 'list':
return ReadInfoSerializer
else:
return self.serializer_class
def create(self, request, *args, **kwargs):
user = request.user
goods =request.data.get('goods')
if Cart.objects.filter(user=user,goods=goods):
# 该商品存在
cart_goods = Cart.objects.get(user=user,goods=goods)
cart_goods.number +=1
cart_goods.save()
# 商品序列化
serializer = self.get_serializer(cart_goods)
return Response(serializer.data,status=status.HTTP_201_CREATED)
else:
# 没有该商品则进行添加该商品
request.data['user'] = user.id
return super().create(request,*args,**kwargs)
def list(self, request, *args, **kwargs):
query =self.get_queryset().filter(user=request.user)
serializer = self.get_serializer(query, many=True)
return Response(serializer.data)
def update_goods_status(self,request, *args, **kwargs):
obj =self.get_object()
obj.is_checked = not obj.is_checked
obj.save()
return Response({"message":'修改成功'},status=status.HTTP_200_OK)
def update_goods_number(self,request, *args, **kwargs):
number = request.data.get('number')
obj = self.get_object()
if not isinstance(number,int): return Response({'error':'参数number只可为INT类型'})
if number > obj.goods.stock:
return Response({"message": "数量不可超过该商品的库存数量"}, status=status.HTTP_422_UNPROCESSABLE_ENTITY)
elif number <= 0:
obj.delete()
return Response({"message":"修改成功,已删除"},status=status.HTTP_200_OK)
else:
obj.number = number
obj.save()
return Response({"message": "修改成功"}, status=status.HTTP_200_OK)
# url
from apps.cart.views import CartViecw
urlpatterns = [
# 商品首页
path('cart/', CartViecw.as_view({"post":'create','get':'list'})),
# 修改商品购物车的状态
path('cart/<int:pk>/checked/', CartViecw.as_view({"put":'update_goods_status'})),
# 修改商品数量
path('cart/<int:pk>/number/', CartViecw.as_view({"put": 'update_goods_number'})),
]
以上是django restframework商城的后端实现。