Flask 迁移错误 - 与列关联的外键找不到 table 用于生成目标列的外键

Question

我在不同的文件中有如下两个模型。当我运行 flask db migrate 我得到这个错误。

raise exc.NoReferencedTableError(
sqlalchemy.exc.NoReferencedTableError: Foreign key associated with column 'datasets.user_id' could not find table 'user' with which to generate a foreign key to target column 'id'

我做错了什么？请帮帮我，谢谢。

class User(Model):
    __tablename__ = "users"
    id = Column(db.Integer, primary_key=True)
    email = Column(db.String(64), unique=True, index=True)
    username = Column(db.String(15), unique=True, index=True)
    role_id = Column(db.Integer, db.ForeignKey("roles.id"))
    userdataset = db.relationship("Dataset", backref="user")

class Dataset(db.Model):
    __tablename__ = 'datasets'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(64), index=True, unique=True)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))

Answer 1

如果将数据集table中的外键值设置为users.id，就可以了。

Flask 迁移错误 - 与列关联的外键找不到 table 用于生成目标列的外键

Flask migrate error - foreign key associated with column could not find table with which to generate a foreign key to target column

python

sqlalchemy

flask

alembic