可以通过django-filter URL解析器来做一个```lookup_type`? [英] Possible to do an `in` `lookup_type` through the django-filter URL parser?
问题描述
我正在使用 django-filter 与 django-rest-framework ,我试图实例化一个过滤器,该过滤器接受用于过滤查询集的数字列表。
class MyFilter(django_filters.FilterSet):
ids = django_filters.NumberFilter(name ='id',lookup_type ='in')
class Meta:
model = MyModel
fields =('ids',)
class MyModelViewSet(viewsets.ModelViewSet):
queryset = MyModel.objects.all()
serializer_class = MyModelSerializer
filter_class = MyFilter
如果我传递逗号分隔的整数列表,则过滤器忽略一下。
如果我传入一个整数,它通过django过滤器到django的表单验证器,并抱怨:
'Decimal'对象不可迭代
有没有办法创建一个django过滤器对象,它可以处理整数列表,并正确地过滤掉queryset?
无论好坏,我为此创建了一个自定义过滤器:
class IntegerListFilter(django_filters.Filter):
def filter(self,qs,value):
如果值不在(None,''):
integers = [int(v)for v in value.split(',')]
return qs.filter(** {'%s __%s'%(self.name,self.lookup_type):integers})
return qs
使用的是:
class MyFilter(django_filters.FilterSet):
ids = IntegerListFilter(name ='id',lookup_type ='in')
class Meta:
model = MyModel
fields =('ids',)
class MyModelViewSet(viewsets.ModelViewSet):
queryset = MyModel.objects.all()
serializer_class = MyModelS erializer
filter_class = MyFilter
现在我的界面接受逗号分隔的整数列表。 p>
I'm using django-filter with django-rest-framework and I'm trying to instantiate a filter that accepts lists of numbers for filtering the query set down
class MyFilter(django_filters.FilterSet):
ids = django_filters.NumberFilter(name='id',lookup_type='in')
class Meta:
model = MyModel
fields = ('ids',)
class MyModelViewSet(viewsets.ModelViewSet):
queryset = MyModel.objects.all()
serializer_class = MyModelSerializer
filter_class = MyFilter
If I pass in a comma separated list of integers, the filter is ignored altogether.
If I pass in a single integer, it gets through django-filter into django's form validator and complains:
'Decimal' object is not iterable
Is there a way to create a django-filter object which can handle a list of integers and properly filter down the queryset?
For better or worse, I created a custom filter for this:
class IntegerListFilter(django_filters.Filter):
def filter(self,qs,value):
if value not in (None,''):
integers = [int(v) for v in value.split(',')]
return qs.filter(**{'%s__%s'%(self.name, self.lookup_type):integers})
return qs
Which is used like:
class MyFilter(django_filters.FilterSet):
ids = IntegerListFilter(name='id',lookup_type='in')
class Meta:
model = MyModel
fields = ('ids',)
class MyModelViewSet(viewsets.ModelViewSet):
queryset = MyModel.objects.all()
serializer_class = MyModelSerializer
filter_class = MyFilter
Now my interface accepts comma-delimited lists of integers.
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