Django Rest Framework ManyToMany filter multiple values
You can chain filters. For example, if you need all users which labels contain both 1
and 2
values, you can write a query like so:
User.objects.filter(labels=1).filter(labels=2)
django-filters
does not support queries like this by default so you need a custom filter.
class M2MFilter(django_filters.Filter):
def filter(self, qs, value):
if not value:
return qs
values = value.split(',')
for v in values:
qs = qs.filter(labels=v)
return qs
class UserFilter(django_filters.FilterSet):
labels = M2MFilter(name='labels')
class Meta:
model = User
fields = ('labels',)
Now you can write labels id's comma-separated and get exactly what you need
/api/users/?labels=1,2
Here is good answer about m2m queries
I have the same question and I found something like this:
from django.db.models import Q
from rest_framework import viewsets
class YourViewSet(viewsets.ModelViewSet)
def get_queryset(self):
# get lable infos here
lables_info = self.request.query_params.get('lable')
lables = lables_info.split(',')
lable1, lable2 = lables[0], lables[1]
return models.objects.fliter(
Q(lable=lable1) | Q(lable=lable2)
)
.......
Django==2.2.4
djangorestframework==3.10.2
django-filter==2.2.0