Add query_serializer argument to swagger_auto_schema (#17)

Closes #16.

testproj/users/serializers.py

@@ -12,3 +12,8 @@ class UserSerializerrr(serializers.ModelSerializer):
     class Meta:
         model = User
         fields = ('id', 'username', 'email', 'snippets', 'last_connected_ip', 'last_connected_at')
+
+
+class UserListQuerySerializer(serializers.Serializer):
+    username = serializers.CharField(help_text="this field is generated from a query_serializer")
+    is_staff = serializers.BooleanField(help_text="this one too!")

testproj/users/views.py

@@ -7,13 +7,13 @@ from rest_framework.views import APIView
 
 from drf_yasg import openapi
 from drf_yasg.utils import swagger_auto_schema, no_body
-from users.serializers import UserSerializerrr
+from users.serializers import UserSerializerrr, UserListQuerySerializer
 
 
 class UserList(APIView):
     """UserList cbv classdoc"""
 
-    @swagger_auto_schema(responses={200: UserSerializerrr(many=True)})
+    @swagger_auto_schema(query_serializer=UserListQuerySerializer, responses={200: UserSerializerrr(many=True)})
     def get(self, request):
         queryset = User.objects.all()
         serializer = UserSerializerrr(queryset, many=True)