我有一个带有用户认证系统的Flask网站。 尝试将更改提交到数据库时出现错误。
class User(UserMixin, db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String)
surname = db.Column(db.String)
email = db.Column(db.String, unique=True)
password = db.Column(db.String)
registered_on = db.Column(db.DateTime)
admin = db.Column(db.Boolean)
avatar = db.Column(db.String)
confirmed = db.Column(db.Boolean)
confirmed_on = db.Column(db.DateTime)
cloud_storage_actived = db.Column(db.String)
def __init__(self, name=None, surname=None, email=None, password=None, user_id=None, confirmed=None, confirmed_on=None, admin=False, avatar='/static/avatars/default.png', cloud_storage_actived=False):
self.id = user_id
self.name = name
self.surname = surname
self.email = email
self.password = password
self.admin = admin
self.avatar = avatar
self.confirmed = confirmed
self.confirmed_on = confirmed_on
self.registered_on = datetime.datetime.now()
self.cloud_storage_actived = cloud_storage_actived
def is_authenticated(self):
return True
user = User.query.filter_by(email=current_user.email).first_or_404()
user.query.update(dict(name=request.form['name'],
surname=request.form['surname'], email=request.form['email'], avatar=url_for('static', filename='avatars/') + filename if filename else current_user.avatar))
db.session.commit()
sqlalchemy.exc.IntegrityError: (sqlite3.IntegrityError) UNIQUE constraint failed: user.email
[SQL: UPDATE user SET name=?, surname=?, email=?, avatar=?]
[parameters: ('MyName', 'MySurname', 'MyEmail', '/static/avatars/1.gif')]
(Background on this error at: http://sqlalche.me/e/gkpj)
我在互联网上搜索了如何操作,但没有找到答案。
答案 0 :(得分:0)
这是因为您将所有用户记录更新为相同的值。您的查询应具有where语句。
您正在运行的查询是
UPDATE user SET name='MyName', surname='MySurname', email='MyEmail', avatar='/static/avatars/1.gif'
但实际上应该是这样的:
UPDATE user SET name='MyName', surname='MySurname', email='MyEmail', avatar='/static/avatars/1.gif' WHERE id = someid
您只应使用where语句更新一个用户:
user = User.query.filter_by(email=current_user.email).first_or_404()
user.query.update(dict(name=request.form['name'], surname=request.form['surname'], email=request.form['email'], avatar=url_for('static', filename='avatars/') + filename if filename else current_user.avatar)).where(User.email == current_user.email)
db.session.commit()
但是因为您使用的是模型,所以您也可以更新模型
user = User.query.filter_by(email=current_user.email).first_or_404()
user.name = request.form['name']
user.surname = request.form['surname']
user.email = request.form['email']
user.avatar = url_for('static', filename='avatars/') + filename if filename else current_user.avatar
db.session.flush()
db.session.commit()