Python 使用sqlalchemy_utils ChoiceType在烧瓶中迁移时出错
我有一个烧瓶模型:Python 使用sqlalchemy_utils ChoiceType在烧瓶中迁移时出错,python,postgresql,flask,sqlalchemy,flask-migrate,Python,Postgresql,Flask,Sqlalchemy,Flask Migrate,我有一个烧瓶模型: class User(db.Model): ROLE_USER = 0 ROLE_MODERATOR = 1 ROLE_ADMIN = 2 ROLES = [ (ROLE_USER, u'Regular user'), (ROLE_MODERATOR, u'Moderator'), (ROLE_ADMIN, u'Admin') ] id = db.Column(db.Intege
class User(db.Model):
ROLE_USER = 0
ROLE_MODERATOR = 1
ROLE_ADMIN = 2
ROLES = [
(ROLE_USER, u'Regular user'),
(ROLE_MODERATOR, u'Moderator'),
(ROLE_ADMIN, u'Admin')
]
id = db.Column(db.Integer, primary_key = True)
login = db.Column(db.String(32), nullable=False, unique=True)
first_name = db.Column(db.String(32))
last_name = db.Column(db.String(32))
role = db.Column(ChoiceType(ROLES), nullable=False)
我用flask migrate创建了一个迁移(db是Postgresql):
迁移已成功创建,但当我要升级时,出现以下错误:
TypeError: <flask_script.commands.Command object at 0x7fada1e973d0>: __init__() got an unexpected keyword argument 'length'
TypeError::\uuuu init\uuuuuuu()获取了意外的关键字参数“length”
有人能解释这个问题吗?正如错误所说,
ChoiceType
没有名为length
的init参数:
您可以将其删除并使用
sqlalchemy_utils.types.choice.ChoiceType(User.ROLES)
相反
sqlalchemy_utils.types.choice.ChoiceType(User.ROLES)