请问我的问题不是重复的,我已经搜索过但没有一致的结果。 所以我用djangorestframework
建立一个restfull api我想要像
这样的查询http://localhost:8000/api/products/?category_name_fr=shirt,shoes
查找category_name_fr包含衬衫或鞋子的所有产品
为了在谷歌搜索后执行此操作,我编写了一个自定义的django过滤器类(MultiValueCharFilter),但过滤器实际上并不像我想要的那样。 当我像上面那样进行查询时,它会返回ProductTable中的所有产品。但是,当我像下面这样进行查询时,过滤正确完成
http://localhost:8000/api/products/?category_name_fr=shirt
以下是我的filters.py文件的源代码,产品类是ProductList
from django_filters import rest_framework as filters
from .models import ProductList
from django_filters import Filter
from django_filters.fields import Lookup
class MultiValueCharFilter(filters.BaseCSVFilter, filters.CharFilter):
def filter(self, qs, value):
# value is either a list or an 'empty' value
values = value or []
print(values)
for value in values:
qs = super(MultiValueCharFilter, self).filter(qs, value) | qs
return qs
class ProductListFilter(filters.FilterSet):
min_price = filters.NumberFilter(name="price", lookup_expr='gte')
max_price = filters.NumberFilter(name="price", lookup_expr='lte')
category_name_fr = MultiValueCharFilter(name="category_name_fr", lookup_expr='icontains')
category_name_en = MultiValueCharFilter(name="category_name_en", lookup_expr='icontains')
collection_name_fr = MultiValueCharFilter(name="collection_name_fr", lookup_expr='icontains')
collection_name_en = MultiValueCharFilter(name="collection_name_en", lookup_expr='icontains')
name_en = MultiValueCharFilter(name="name_en", lookup_expr='icontains')
name_fr = MultiValueCharFilter(name="name_fr", lookup_expr='icontains')
class Meta:
model = ProductList
fields = ['sale', 'sold', 'min_price', 'max_price', 'category_name_fr', 'name_en', 'name_fr',
'category_name_en', 'collection_name_fr', 'collection_name_en']
有关更多信息,这是视图ListAPIView
的代码from rest_framework import viewsets, generics, filters as rf_filters
from ..models import Product, Collection, ProductList
from ..serializers import ProductSerializer, CollectionSerializer, ProductListSerializer
from django_filters import rest_framework as filters
from ..filters import ProductFilter, ProductListFilter
from rest_framework.pagination import PageNumberPagination
from rest_framework.views import APIView
from rest_framework.response import Response
class StandardResultsSetPagination(PageNumberPagination):
page_size = 4
page_size_query_param = 'page_size'
max_page_size = 15
class ProductList(generics.ListAPIView):
queryset = ProductList.objects.all()
serializer_class = ProductListSerializer
filter_backends = (filters.DjangoFilterBackend,)
filter_class = ProductListFilter
serializer_class = ProductListSerializer
ordering_fields = ('price', 'created_at')
pagination_class = StandardResultsSetPagination
答案 0 :(得分:0)
您需要编写一个自定义的filter&filterset类,如下所示
from django_filters import Filter, FilterSet
from django_filters.constants import EMPTY_VALUES
class ListFilter(filters.Filter):
def filter(self, qs, value):
if value in EMPTY_VALUES:
return qs
value_list = value.split(",")
qs = super().filter(qs, value_list)
return qs
class ProductListFilter(filters.FilterSet):
category_name_fr = ListFilter(field_name="category_name_fr", lookup_expr="in")
# other fields
from django_filters.rest_framework import DjangoFilterBackend
class ProductList(generics.ListAPIView):
filter_backends = (DjangoFilterBackend,)
filterset_class = ProductListFilter
# other attr settings