django rest framework model serializers - read nested, write flat

Question

I have a situation where my client is attempting to write a representation that includes a list of fk\'s

{
languages: [1]
last_name: \"Beecher\"
settings: 1
stat         


        

Answer 1

I had the same problem and it looks like quite a few others have it too. Carlton Gibson answer actually lead me to my hacky solution. I ended up using a ModelSerializer with the depth set and created the following mixin to use in the views.

class ReadNestedWriteFlatMixin(object):
    """
    Mixin that sets the depth of the serializer to 0 (flat) for writing operations.
    For all other operations it keeps the depth specified in the serializer_class
    """
    def get_serializer_class(self, *args, **kwargs):
        serializer_class = super(ReadNestedWriteFlatMixin, self).get_serializer_class(*args, **kwargs)
        if self.request.method in ['PATCH', 'POST', 'PUT']:
            serializer_class.Meta.depth = 0
        return serializer_class