Sqlite 烧瓶,SQLAlchemy:如何使柱自动递增
我定义的模型如下:Sqlite 烧瓶,SQLAlchemy:如何使柱自动递增,sqlite,flask,sqlalchemy,Sqlite,Flask,Sqlalchemy,我定义的模型如下: class User(UserMixin, db.Model): __tablename__ = 'users' id = db.Column(db.Integer, primary_key=True) first = db.Column(db.String(64)) last = db.Column(db.String(64)) dob = db.Column(db.Date) street_addr1 = db.Column
class User(UserMixin, db.Model):
__tablename__ = 'users'
id = db.Column(db.Integer, primary_key=True)
first = db.Column(db.String(64))
last = db.Column(db.String(64))
dob = db.Column(db.Date)
street_addr1 = db.Column(db.String(64))
street_addr2 = db.Column(db.String(64))
city = db.Column(db.String(64))
state = db.Column(db.String(2))
zip = db.Column(db.String(9))
gender = db.Column(db.Enum('M', 'F'))
home_box = db.Column(db.String(32))
username = db.Column(db.String(64), unique=True, index=True)
password_hash = db.Column(db.String(128))
@property
def password(self):
raise AttributeError('password is not a readable attribute')
@password.setter
def password(self, password):
self.password_hash = generate_password_hash(password)
def verify_password(self, password):
return check_password_hash(self.password_hash, password)
def __repr__(self):
return '<User %r>' % self.username
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
目前,由于未设置id,插入失败:
sqlalchemy.exc.IntegrityError: (IntegrityError) constraint failed 'INSERT INTO users (first, last, dob, street_addr1, street_addr2, city, state, zip, gender, home_box, username, password_hash) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)' ('Nate', 'Reed', '1980-11-11', '', '', '', '', '', 'male', '', 'natereed', 'pbkdf2:sha1:1000$N8JHXEDU$24a7724ae9edda81a73e6b92d23aa576ad8284aa')
如何使id自动递增?我的理解是,它必须在表(而不是列)级别完成。如何在上面的代码中执行此操作?我发现问题在于我试图为性别插入一个无效的值。它是一个值为“M”或“F”的枚举
如果表单可以从模型中生成就好了,因为这样可以消除这种错误的可能性。有没有关于使用Flask执行此操作的提示?什么意思是“插入失败,因为未设置id”。你能说出确切的错误吗?您不需要手动自动递增,因此我假设您还有一些其他问题Hi codegeek,它在IntegrityError中失败。用错误消息更新了我的帖子。你能发布整个模型代码和插入的视图吗?
sqlalchemy.exc.IntegrityError: (IntegrityError) constraint failed 'INSERT INTO users (first, last, dob, street_addr1, street_addr2, city, state, zip, gender, home_box, username, password_hash) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)' ('Nate', 'Reed', '1980-11-11', '', '', '', '', '', 'male', '', 'natereed', 'pbkdf2:sha1:1000$N8JHXEDU$24a7724ae9edda81a73e6b92d23aa576ad8284aa')