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

Thanks to previous posts, I went with a similar solution based off get_serializer_class for this.

I also wanted to be able to change the serializer class depending on method.

First, I added an attribute to the view class with a dictionary mapping request methods to serializer classes.

 serializer_classes = {
     'GET': NestedSerializer,
     'POST': FlatSerializer
 }

Then, I defined a mixin to use where I want this behavior.

class SwappableSerializerMixin(object):
    def get_serializer_class(self):
        try:
            return self.serializer_classes[self.request.method]
        except AttributeError:
            logger.debug('%(cls)s does not have the required serializer_classes'
                         'property' % {'cls': self.__class__.__name__})
            raise AttributeError
        except KeyError:
            logger.debug('request method %(method)s is not listed'
                         ' in %(cls)s serializer_classes' %
                         {'cls': self.__class__.__name__,
                          'method': self.request.method})
            # required if you don't include all the methods (option, etc) in your serializer_class
            return super(SwappableSerializerMixin, self).get_serializer_class() es