Question

我想在烧瓶中使用mongoengine定义两个文档，用户包含以下主题，主题包含发布用户。

我在User中定义user.py文档，在Topic中定义topic.py文档。仅在topic.py中导入User clakk，在user.py中不导入Topic类，以避免导入循环。

user.py:
class User(Document):
    username = StringField(unique=True, required=True)
    following_topics = ListField(ReferenceField('Topic', reverse_delete_rule=PULL, unique=True))


topic.py:
from user import User
class Topic(Document, ModelMixin):
    title = StringField(default='')
    user = ReferenceField(User, required=True)

但是当我启动烧瓶时，出现错误，我该如何解决？

mongoengine.errors.NotRegistered: `Topic` has not been registered in the document registry. Importing the document class automatically registers it, has it been imported?

Answer 1

重要问题。

user.py: 
from topic import Topic 
class User(Document):
    username = StringField(unique=True, required=True)
    following_topics = ListField(ReferenceField('Topic', reverse_delete_rule=PULL, unique=True))

topic.py: 
class Topic(Document, ModelMixin):
    title = StringField(default='')
    user = ReferenceField('User', required=True)

带烧瓶的mongoengine'mongoengine.errors.NotRegistered'问题

1 个答案: