Mixin for the Djando Rest Framework (DFR) to auto-complete objects on creating.

gistfile1.py

class AutoCompleteResourceMixin(ResourceMixin):

    def validate_request(self, data, files=None):
        """
        Auto-complete objects when they are created.

        A REST equivalent to auto-populate for Django web forms.
        """

        method = self.view._method if hasattr(self.view, '_method') else None
        if 'POST' == method and hasattr(self.model, '_meta'):
            data_mutable = data.copy()
            for field in self.model._meta.fields:
                exclude = tuple(data.keys())
                try:
                    exclude += self.form.Meta.exclude
                except AttributeError:
                    pass
                if field.name not in exclude and field.has_default():
                    default = field.get_default()
                    data_mutable.update({field.name:default})
            data = data_mutable
        
        return self._resource.validate_request(data, files)

class MessageResource(AutoCompleteResourceMixin, ModelResource):
    model = Message