marshmallow-mongoengineの参照フィールドの操作

Question

marshmallow_mongoengineのReferenceFieldsを参照解除するにはどうすればよいですか？たとえば、dump_data = author_schema.dump(author).dataは、より有用な応答{title='Fight Club', author=author}の代わりに'5578726b7a58012298a5a7e2'になります。

from marshmallow_mongoengine import ModelSchema 

class AuthorSchema(ModelSchema): 
    class Meta: 
     model = Author 

class BookSchema(ModelSchema): 
    class Meta: 
     model = Book 

author_schema = AuthorSchema() 

author = Author(name='Chuck Paluhniuk').save() 
book = Book(title='Fight Club', author=author).save() 

dump_data = author_schema.dump(author).data 
# {'id': 1, 'name': 'Chuck Paluhniuk', 'books': ['5578726b7a58012298a5a7e2']} 

author_schema.load(dump_data).data 
# <Author(name='Chuck Paluhniuk')> 

Answer 1

Nesting schemas

from marshmallow.fields import Nested 

class AuthorSchema(ModelSchema): 
    class Meta: 
     model = Author   
    books = Nested("BookSchema",many=True)