from django.shortcuts import render

from rest_framework.views import APIView

from rest_framework.response import Response

from rest_framework import status

from rest_framework.parsers import JSONParser

from rest_framework import mixins, generics

from rest_framework.generics import ListAPIView

from rest_framework.pagination import PageNumberPagination

from goods.models import Goods, GoodsCategory

from goods.serializer import GoodsSerializer, CategorySerializer

from rest_framework import viewsets

from django_filters.rest_framework import DjangoFilterBackend

class GoodsList(mixins.ListModelMixin, viewsets.GenericViewSet):

    class GoodsPagination(PageNumberPagination):

        page_size = 2

        page_size_query_param = 'pageSize'

        page_query_param = 'p'

        max_page_size = 100

    # queryset = Goods.objects.all()  # 不能切片后再过滤，例如：Goods.objects.all()[:10]

    serializer_class = GoodsSerializer

    pagination_class = GoodsPagination

    # 过滤方法1

    # 使用此方法，不使用queryset时，须在urls.router中指定base_name参数

    def get_queryset(self):

        queryset = Goods.objects.all() #此时并没有取出数据

        price_min = self.request.query_params.get('price_min',0)

        if price_min:

            queryset = queryset.filter(shop_price__gt=int(price_min))

        return queryset

router = DefaultRouter()

router.register('goods',GoodsList,base_name='a')

from django.shortcuts import render

from rest_framework.views import APIView

from rest_framework.response import Response

from rest_framework import status

from rest_framework.parsers import JSONParser

from rest_framework import mixins, generics

from rest_framework.generics import ListAPIView

from rest_framework.pagination import PageNumberPagination

from goods.models import Goods, GoodsCategory

from goods.serializer import GoodsSerializer, CategorySerializer

from rest_framework import viewsets

from django_filters.rest_framework import DjangoFilterBackend

class GoodsList(mixins.ListModelMixin, viewsets.GenericViewSet):

    class GoodsPagination(PageNumberPagination):

        page_size = 2

        page_size_query_param = 'pageSize'

        page_query_param = 'p'

        max_page_size = 100

    queryset = Goods.objects.all()  # 不能切片后再过滤，例如：Goods.objects.all()[:10]

    serializer_class = GoodsSerializer

    pagination_class = GoodsPagination

    filter_backends = (DjangoFilterBackend,)

    filter_fields = ('name',) #逗号必加,缺点无法模糊查询

from django.shortcuts import render

from rest_framework.views import APIView

from rest_framework.response import Response

from rest_framework import status

from rest_framework.parsers import JSONParser

from rest_framework import mixins, generics

from rest_framework.generics import ListAPIView

from rest_framework.pagination import PageNumberPagination

from goods.models import Goods, GoodsCategory

from goods.serializer import GoodsSerializer, CategorySerializer

from rest_framework import viewsets

from django_filters.rest_framework import DjangoFilterBackend

import django_filters

class GoodsFilter(django_filters.rest_framework.FilterSet):

    max_price = django_filters.rest_framework.NumberFilter(field_name='shop_price',lookup_expr='lte')

    min_price = django_filters.rest_framework.NumberFilter(field_name='shop_price',lookup_expr='gte')

    class Meta:

        model = Goods

        fields  = ['min_price','max_price']

class GoodsList(mixins.ListModelMixin, viewsets.GenericViewSet):

    class GoodsPagination(PageNumberPagination):

        page_size = 2

        page_size_query_param = 'pageSize'

        page_query_param = 'p'

        max_page_size = 100

    queryset = Goods.objects.all()  # 不能切片后再过滤，例如：Goods.objects.all()[:10]

    serializer_class = GoodsSerializer

    pagination_class = GoodsPagination

    filter_backends = (DjangoFilterBackend,)

    # filter_fields = ('name',) #逗号必加,缺点无法模糊查询

    filterset_class  = GoodsFilter