Python LoginForm.validate_on_submit Examples

Example #1

def login():
    form = LoginForm(request.form)
    if form.validate_on_submit():
        user = User.query.filter_by(email=form.email.data).first()
        if user and bcrypt.check_password_hash(user.password,
                                               request.form['password']):
            login_user(user)
            flash('You are logged in. Welcome!', 'success')
            return redirect(url_for('user.members'))
        else:
            flash('Invalid email and/or password.', 'danger')
            return render_template('user/login.html', form=form)
    return render_template('user/login.html', title='Please Login', form=form)

Example #2

def login():
    form = LoginForm(request.form)
    if form.validate_on_submit():
        try:
            user = models.User.objects.get(username=form.username.data)
        except:
            user = None
        if user and bcrypt.check_password_hash(user.password,
                                               request.form['password']):
            login_user(user)
            flash('You are logged in. Welcome!', 'success')
            return redirect(url_for('user.main'))
        else:
            flash('Invalid email and/or password.', 'danger')
            return render_template('user/login.html', form=form)
    return render_template('user/login.html', form=form)