python-flask db.session.commit() 不工作
python-flask db.session.commit() is not working
问题出在用户尝试 'forgot password' 选项时。它创建新的 reset_key
用于验证,但新密钥没有更新到数据库中。
@app.route('/login/forgot/', methods=['GET', 'POST'])
def forgot():
form = ResetLoginForm(request.form)
#There's no session yet. User just pointing to /login/forgot url.
if request.method == 'POST' and form.validate():
user = User.query.filter_by(email=form.email.data).first()
if not user:
flash('The username or email incorrect')
return render_template('forgot.html', form=form)
reset_key = generate_key() ## this creates a new key, but how update this key into db?
#tried something like
user.reset_key = reset_key
db.session.add(user)
db.session.commit()
#this is not working. Is it due to session is not started or something?
感谢您的帮助或提示。
这是因为 User.query.filter_by(email=form.email.data).first()
将 return 一个 sqlalchemy.orm.query.Query
对象。正如其文档所说:
Query is the source of all SELECT statements generated by the ORM,
both those formulated by end-user query operations as well as by high
level internal operations such as related collection loading. It
features a generative interface whereby successive calls return a new
Query object, a copy of the former with additional criteria and
options associated with it.
所以你只是得到了一个复制的对象,所以你的改变不会起作用;
你可以这样使用:
user = db.session.query(User).filter_by(email==form.email.data).first()
然后你可以改变 user
attrs
user = db.session.query(User).first()
解决了问题。
问题出在用户尝试 'forgot password' 选项时。它创建新的 reset_key
用于验证,但新密钥没有更新到数据库中。
@app.route('/login/forgot/', methods=['GET', 'POST'])
def forgot():
form = ResetLoginForm(request.form)
#There's no session yet. User just pointing to /login/forgot url.
if request.method == 'POST' and form.validate():
user = User.query.filter_by(email=form.email.data).first()
if not user:
flash('The username or email incorrect')
return render_template('forgot.html', form=form)
reset_key = generate_key() ## this creates a new key, but how update this key into db?
#tried something like
user.reset_key = reset_key
db.session.add(user)
db.session.commit()
#this is not working. Is it due to session is not started or something?
感谢您的帮助或提示。
这是因为 User.query.filter_by(email=form.email.data).first()
将 return 一个 sqlalchemy.orm.query.Query
对象。正如其文档所说:
Query is the source of all SELECT statements generated by the ORM, both those formulated by end-user query operations as well as by high level internal operations such as related collection loading. It features a generative interface whereby successive calls return a new Query object, a copy of the former with additional criteria and options associated with it.
所以你只是得到了一个复制的对象,所以你的改变不会起作用;
你可以这样使用:
user = db.session.query(User).filter_by(email==form.email.data).first()
然后你可以改变 user
attrs
user = db.session.query(User).first()
解决了问题。