Oliver Sauder

@eloi-martinez-qida No worries. Welcome to DJA! This is an OSS project with only volunteer contributors. So people work on the issues which are most relevant to them. Therefore, if you...

The best way would be to check whether the django filter class has a way to validate the filter names.

Could it be that this is a simply test setup issue and would be solved with changes of #396?

As there hasn't been any feedback I assume this has been solved with changes in #396 Closing but if there is still a question concerning this issue please comment and...

@aradbar Thanks for the additional information and the pointer. I see that accessing `request.data` in `get_serializer_class` causes issues although in the initial example of this issue it actually accesses `request.user`...

@aradbar I think this makes the situation worse for users not using polymorphic serializers as with such a change every user of DJA which has `get_serializer_class` overwritten will have an...

thanks for reporting. While handling the exception a [serializer](https://github.com/django-json-api/django-rest-framework-json-api/blob/master/rest_framework_json_api/utils.py#L406) is retrieved and [initalizing](https://github.com/django-json-api/django-rest-framework-json-api/blob/master/rest_framework_json_api/serializers.py#L119) the serializer causes the error to be raised again ending up in the 500 error message. It...

As DJA we support `BrowsableAPIRenderer` so using the different filter backend should work. I haven't looked into it in detail so not sure whether you fix is the only solution....

Thanks for reporting. This seems to have been missed when implementing polymorphic serailizers. At a quick glance your code snippet looks good. It would be great if you could open...

@4nickel I do not quite see how self.instance can become a list. Are you able to reproduce this in the context of a DJA unit test?