Nested schema for Many To Many relations

[JaroslavAtPixofarm]

Hello,

Not really sure if i am doing something wrong, but it seems like nested schema for many-to-many fields is not supported.
When i tried to just add,

many_to_many_field = fields.Nested(ManyToManyFieldSchema, many=True) it was failing bcs ManyToManyManager is not iterrable.

Managed to do it at the end, but i think its a bit hacky sollution
many_to_many_field = fields.Function(lambda obj: [ManyToManyFieldSchema().dump(many-to-many-instance) for many-to-many-instance in obj.many_to_many_field.all()])

Is there a better/correct way how to handle many to many fields serialization or its really not supported "out of the box"?

Thanks!

[marcovelarde]

I think #99 do what you want