Description of feature request

StringRelatedField is not currently supported by DJA. The currentworkaround is overwritingget_resource_id in a customResourceRelatedField.

Checklist

• Raised initially as discussionStringRelatedField() not working #1234
• This cannot be dealt with as a third party library. (We prefer new functionality to be in the form of third party libraries where feasible.)
• I have reduced the issue to the simplest possible case.