英文:
How to get working logging with flask-login?
问题
我正在使用Python开发一个应用程序，其中包括用户登录。我正在使用Flask以及SQLAlchemy、Flask-Login和Flask表单。以下是我的注册和登录代码（位于模块routes.py）：
@app.route('/register', methods=['GET', 'POST'])def register():register_form = RegistrationForm(request.form)if request.method == 'POST':if register_form.validate():email = request.form.get('email')password = request.form.get('password')username = request.form.get('username')existing_user = User.query.filter_by(email=email).first()if existing_user is None:user = User(username=username, email=email,password=bcrypt.generate_password_hash(password))db.session.add(user)db.session.commit()login_user(user)return redirect(url_for('home'))flash('A user already exists with that email address.')return redirect(url_for('register'))return render_template('/register.html',title='Create an Account',form=RegistrationForm())@app.route('/login', methods=['GET', 'POST'])def login():login_form = LoginForm(request.form)if request.method == 'POST':if login_form.validate():email = request.form.get('email')password = request.form.get('password')user = User.query.filter_by(email=email).first()if user:if user.check_password(password=password):login_user(user)next = request.args.get('next')return redirect(next or url_for('home'))flash('Invalid username/password combination')return redirect(url_for('login'))return render_template('login.html',form=LoginForm())
可以看到，它们以相似的方式编写。这是我的日志记录器函数（位于模块models.py）：
@login_manager.user_loaderdef load_user(user_id):return User.query.get(int(user_id))
注册功能按预期工作，但登录功能却不然。当我使用有效的电子邮件和密码（保存在SQL中工作正常）时，我的Web应用程序总是显示“无效的用户名/密码组合”。
有人可以提供帮助吗？
英文:
I'm developing an app in Python that includes logging users. I'm using flask incl. SQLAlchemy, flask-login and flask forms. These are my codes for registering and logging (in module routes.py):
@app.route('/register', methods=['GET', 'POST'])def register():register_form = RegistrationForm(request.form)if request.method == 'POST':if register_form.validate():email = request.form.get('email')password = request.form.get('password')username = request.form.get('username')existing_user = User.query.filter_by(email=email).first()if existing_user is None:user = User(username=username, email=email,password=bcrypt.generate_password_hash(password))db.session.add(user)db.session.commit()login_user(user)return redirect(url_for('home'))flash('A user already exists with that email address.')return redirect(url_for('register'))return render_template('/register.html',title='Create an Account',form=RegistrationForm())@app.route('/login', methods=['GET', 'POST'])def login():login_form = LoginForm(request.form)if request.method == 'POST':if login_form.validate():email = request.form.get('email')password = request.form.get('password')user = User.query.filter_by(email=email).first()if user:if user.check_password(password=password):login_user(user)next = request.args.get('next')return redirect(next or url_for('home'))flash('Invalid username/password combination')return redirect(url_for('login'))return render_template('login.html',form=LoginForm())
As can be seen, they are written in a similar manner. This is my logger function (in module models.py):
@login_manager.user_loaderdef load_user(user_id):return User.query.get(int(user_id))
Registering works as expected, but the same can't be said for logging in. When I use valid email and password (saving in sql works fine), my web app always flashes 'Invalid username/password combination'.
Can anyone help?
答案1
得分: 0
我找到了一个解决方案。我的登录表单如下所示：
class LoginForm(FlaskForm):email = StringField('邮箱',validators=[DataRequired(), Email()])password = PasswordField('密码',validators=[DataRequired()])remember = BooleanField('记住我')submit = SubmitField('登录')
我复制了我的注册表单，忘记删除confirm_password字段。在登录时，它没有被确认，因此字段条件不满足 --> form.validate_on_submit为false。
英文:
I found a solution. My form for Login looked as follows:
class LoginForm(FlaskForm):email = StringField('Email',validators=[DataRequired(), Email()])password = PasswordField('Password',validators=[DataRequired()])confirm_password = PasswordField(' Confirm Password',validators=[DataRequired(), EqualTo('password')])remember = BooleanField('Remember Me')submit = SubmitField('Log In')
I copied my Register form and forgot to delete confirm_password field. It is not being confirmed while logging in, so the field conditions is not satisfied --> form.validate_on_submit is false.
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