Update embedded_model.py

[ddrondo]

In the django serializer, without this feature, you need to wrap dict in Embedded models yourself.

[timgraham]

Hi Dmitriy, Thanks for the report and patch. Can you give more details about how to reproduce the problem? We haven't added dumpdata / loaddata support for embedded models yet (#243), however, I'm not sure if you're referring to that issue or to something else (possibly Django rest framework serializers?). I'm skeptical we should automatically convert dictionaries to model instances in EmbeddedModelField.get_db_prep_save() as you proposed.

[ddrondo]

Automatic conversion is very convenient when there are one or more nested serializers

class UserSerializer(serializers.ModelSerializer):
- .... another serializer
- .... another serializer

Instead of manually overriding def create, def update in ModelSerializer. It especially simplifies the process when there are many nested serializers in the nested ones. Imagine 2, 3, 10, ... nesting