Question

我正在尝试将经过身份验证的用户重定向到新的模板文件，但每次都会出现此“该请求的URL不允许使用该方法”错误。

这是我的登录Wtform模型：

class Register(FlaskForm):
      username = StringField('Username',validators=[DataRequired(),
                    Length(min=2, max=20)],)
      email = StringField('Email',validators=[DataRequired(),Email()])

      password = PasswordField('Password', validators=[DataRequired()])
      confirm_password = PasswordField('Confirm Password', validators=[DataRequired(), EqualTo('password')])
      submit = SubmitField('Sign Up')

      def validate_email(self,data_field):
              if User.query.filter_by(email =data_field.data).first():
            raise ValidationError('There is an account with that email')

      def validate_username(self,data_field):
      if User.query.filter_by(username = data_field.data).first():
        raise ValidationError('That username is taken')

class Login(FlaskForm):
      email = StringField('Email',validators=[DataRequired(),Email()])

      password = PasswordField('Password', validators=[DataRequired()])
      remember = BooleanField('Remember Me')
      submit = SubmitField('Login')

这是我用来渲染表单字段以与材料设计引导程序一起使用的宏。

{% macro render_field(field, label_visible=true) %}

        {{ field(class_='form-control validate' , **kwargs) }}
        {% if field.errors %}
            {% for e in field.errors %}
                <p class="help-block">{{ e }}</p>

            {% endfor %}
        {% else %}
            {% if field.type != 'HiddenField' and label_visible %}
            <label for="{{ field.id }}" data-error="wrong" data-success="right">{{ field.label }}</label>
            {% endif %}
        {% endif %}
    
{% endmacro %}

这是我的路线的查看功能。

@app.route("/")
@app.route("/home",methods=['GET','POST'])
def home():
    registerForm = Register()
    form = Login()
    if current_user.is_authenticated:
        return redirect(url_for('circles'))
    if registerForm.validate_on_submit():
        hashed_password = bcrypt.generate_password_hash(form.password.data).decode('utf-8')
        user = User(username = form.username.data, email = form.email.data, password = hashed_password)
        db.session.add(user)
        db.session.commit()
        flash(f'Your account has been created! You are now able to login!','success')
        return redirect(url_for('home'))

    if form.validate_on_submit():
        user = User.query.filter_by(email=form.email.data).first()
    if user and bcrypt.check_password_hash(user.password,form.password.data):
        login_user(user, remember=form.remember.data)
        next_page = request.args.get('next')
        return redirect(next_page) if next_page else redirect(url_for('circles'))

    else:
        flash('Login Unsuccessful. Please check email and password','danger')
#form=form, registerForm=registerForm

return render_template('home.html', title='login',form=form )


@app.route("/circle",methods=['GET','POST'])
def circles():
    return render_template('circle.html')

这是我实施登录方式的方式。

<div class="modal fade" id="modalLoginForm" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"
      aria-hidden="true">
      <div class="modal-dialog" role="document">
        <div class="modal-content">
          <div class="modal-header text-center">
            <h4 class="modal-title w-100 font-weight-bold">Sign in</h4>
            <button type="button" class="close" data-dismiss="modal" aria-label="Close">
              <span aria-hidden="true">&times;</span>
            </button>
          </div>
          <form method="POST" action="">
            {{ form.hidden_tag() }}
            {% with messages = get_flashed_messages(with_categories=true) %}
                {% if messages %}
                {% for category,message in messages%}
                <div class="alert alert-{{ category }}">
                    {{message}}
                </div>
                {% endfor %}
                {% endif %}
                {% endwith %}
          <div class="modal-body mx-3">
            <div class="md-form mb-5">
              <i class="fas fa-envelope prefix grey-text"></i>
               {{ macros.render_field(form.email, label_visible=false, placeholder='Email', type='email') }}
            </div>
    
            <div class="md-form mb-4">
              <i class="fas fa-lock prefix grey-text"></i>
              {{ macros.render_field(form.password, label_visible=false, placeholder='Password', type='password') }}
              <p class="font-small blue-text d-flex justify-content-end">Forgot <a href="#" class="blue-text ml-1">
                    Password?</a></p>
            </div>
    
          </div>
          <div class="modal-footer d-flex justify-content-center">
            <!-- {{ form.submit(class="btn blue-gradient btn-block btn-rounded z-depth-1a") }} -->
            <button type="submit">submit</button>
          </div>
        </form>
        </div>
      </div>
    </div>

当我尝试提交时，它弹出错误，如果我给表单一个对圈子页面的操作，它不进行身份验证，而是重定向到该页面。如果我将主视图分为两个不同的视图功能，即。登录并注册，然后给他们每个人自己的模板，效果很好。当我将它们移回我的主视图以便使用模式访问我的导航栏上的两个模式时，它无法通过身份验证。任何人都可以对我可能搞砸的地方提供见解。我是Flask的新手。

Answer 1

使用标签<form method="POST" action="">，您的表单将被提交到当前URL，因此/。但是，只有/home端点支持POST方法。您应该将装饰器更改为@app.route("/",methods=['GET','POST'])，或将表单标签更改为action="/home"。

如何在Flask中修复“请求的URL不允许使用该方法”

1 个答案: