Django Rest框架( ManyToMany字段上的GET过滤器)
Django Rest框架( ManyToMany字段上的GET过滤器)
提问于 2014-09-19 14:49:02
我试图找出如何通过值过滤ManyToMany字段。在Django中，它和queryset.filter(m2mfield__name)一样简单，但我不太清楚自己缺少了什么。我正在使用Django Rest框架和DjangoFilterBackend。
模型：
class City(models.Model):
name = models.CharField(max_length=80)
class State(models.Model):
name = models.CharField(max_length=50)
cities = models.ManyToManyField(City)滤波器：
import django_filters
class StateFilter(django_filters.FilterSet):
cities = django_filters.CharFilter(
name='cities__name',
lookup_type='contains',
)
class Meta:
model = State
fields = ('name', 'cities')序列化程序：
class CitySerializer(serializers.ModelSerializer):
class Meta:
model = City
fields = ('name', )
class StateSerializer(serializers.ModelSerializer):
cities = CitySerializer(many=True)
class Meta:
model = State
fields = ('name', 'cities')
filter_class = StateFilter视图：
from rest_framework.generics import ListAPIView, RetrieveAPIView
from .serializers import StateSerializer
class StateList(ListAPIView):
queryset = State.objects.all()
serializer_class = StateSerializer
filter_fields = ('name', 'cities')../api/state/的输出当前为：
[
"name": "Florida",
"cities": [
"name": "Tampa",
"name": "St. Petersburg",
"name": "Orlando"
],
"name": "North Carolina",
"cities": [
"name": "Raleigh",
"name": "Charlotte",
"name": "Greensboro"
]
]如何通过名GET调用来过滤城市，如：
../api/state/?城市=夏洛特
上述结果应是：
[
"name": "North Carolina",
"cities": [
"name": "Raleigh",
"name": "Charlotte",
"name": "Greensboro"
]
]回答 1
Stack Overflow用户
回答已采纳
发布于 2014-09-19 15:16:44
我发现我做错了什么。它就在眼前。我没有在视图上声明filter_class：
from rest_framework.generics import ListAPIView, RetrieveAPIView
from .serializers import StateSerializer
from .filters import StateFilter
class StateList(ListAPIView):
queryset = State.objects.all()
serializer_class = StateSerializer
filter_fields = ('name', 'cities')
filter_class = StateFilter # This was missing我不小心把它放在序列化器上了。
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原文链接：
https://stackoverflow.com/questions/25943426
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