New views and serializers

[k1zlt]

You need to drop the DB and then migrate again.

[oneku16]

here in line 87: more pythonic way to check instance of object is builtin function isinstance -> if isinstance(data, (str, int)): ... in line 92: class Address does not have a method objects, as I know mother class Models does not have it as well, we need to define new method for address. + i guess we can find batter option for it.