dj-rest-filters

dj-rest-filters is a Django application allowing users to declaratively add dynamic QuerySet filtering from URL parameters. Its uses Django Rest Framework serializers in backend so it provides same syntax as of serializers. You can validate you query parameter in same way as you validate in your serializer and it also provides filtering mechanism against custom query parameters.

Installation

pip install dj-rest-filters

Then add 'djfilters' to your INSTALLED_APPS.

Usage

Filtering

from rest_framework import generics
from djfilters.backend import DjFilterBackend


class TodoView(generics.GenericAPIView):
    serializer_class = ...
    filter_class = TodoFilter
    filter_backends = [DjFilterBackend]
    queryset = Todo.objects.all()

Validation Only

When queryset is declared, filter will be used to filter that queryset. But when there is not any queryset, filter will just be used to validate the provided query parameters.

from rest_framework import generics

class TodoView(generics.GenericAPIView):
    serializer_class = ...
    filter_class = MyFilter

Filter Context

Just like serializer context, context can be passed to filter by using get_filter_context function like this.

from rest_framework import generics

class TodoView(generics.GenericAPIView):
    ....

    def get_filter_context(self):
        context = {'extra_data': 'some_extra_data'}
        return context

Accessing Validated Query Params

After query param validation, validated parameters can be accessed using request.cleaned_args.

For detailed documentation, click here.