我正在使用 https://github.com/alex/django-filter/的django-rest-framework,但问题主要是关于django-filter.我无法理解如何使用“__in”查找过滤器.
例如,我有模型:
- class Book(models.Model):
- name = models.CharField(max_length=100)
- class BookView(viewsets.ReadOnlyModelViewSet):
- serializer_class = BookSerializer()
- model = Book
- filter_fields = ('id','name')
我不能像这样使用网址
/v1/books/?id__in=1,2,3
找到id为1,2或3的书籍
解决方法讨论的问题是: https://github.com/alex/django-filter/issues/137#issuecomment-77697870
建议的解决方案是创建自定义过滤器,如下所示:
- from django_filters import Filter
- from django_filters.fields import Lookup
- from .models import Product
- class ListFilter(Filter):
- def filter(self,qs,value):
- value_list = value.split(u',')
- return super(ListFilter,self).filter(qs,Lookup(value_list,'in'))
- class ProductFilterSet(django_filters.FilterSet):
- id = ListFilter(name='id')
- class Meta:
- model = Product
- fields = ['id']
你可以写下面的内容:
products/?id=7,8,9