filters.py

class UserFilter(ChainedFilterSet):
	username = AllLookupsFilter()
	full_name = AllLookupsFilter()
	created_at = AllLookupsFilter()

	class Meta():
		model = get_user_model()
		fields = ('id', 'username', 'full_name', 'created_at')


class PostFilter(ChainedFilterSet):
	content = AllLookupsFilter()
	user = RelatedFilter('api.filters.UserFilter')
	created_at = AllLookupsFilter()
	updated_at = AllLookupsFilter()

	class Meta():
		model = Post
		fields = ('id', 'content', 'user_id', 'user', 'created_at', 'updated_at')


class CommentFilter(ChainedFilterSet):
	post = RelatedFilter('api.filters.PostFilter')
	user = RelatedFilter('api.filters.UserFilter')
	content = AllLookupsFilter()
	created_at = AllLookupsFilter()

	class Meta():
		model = Comment
		fields = ('id', 'post_id', 'post', 'user_id', 'user', 'content', 'created_at')


class CommentViewSet(ModelViewSet):
	queryset = Comment.objects.all()
	serializer_class = CommentSerializer

	filter_class = CommentFilter
	ordering_fields = ('id', 'created_at', 'updated_at')
	search_fields = ('content',)