flask-security中注册页面上的其他字段

我正在尝试在我的Flask应用程序中创建一个注册页面.我正在使用Flask-Security进行用户管理.我已经正确设置了；标准注册页面可以正确呈现.但是，我的模型包含许多额外的必填字段，因此我需要更新视图.

I am trying to make a registration page in my Flask application. I am using Flask-Security for user management. I have set it up properly; the standard registration page did render correctly. However, my model consists of quite a few extra, required fields, so I needed to update the view.

我的security_config文件如下所示:

My security_config file looks as follows:

from models import *
from flask_security.forms import ConfirmRegisterForm, Required

class ExtendedConfirmRegisterForm(ConfirmRegisterForm):
    first_name = CharField('Voornaam', [Required()])
    last_name = CharField('Achternaam', [Required()])        

# Setup Flask-Security
user_datastore = PeeweeUserDatastore(db, Student, Role, StudentRoleRel)
security = Security(app, user_datastore,
         confirm_register_form=ExtendedConfirmRegisterForm)

我的表单:

{% extends "base.html" %}
{% from "security/_macros.html" import render_field_with_errors, render_field %}
{% include "security/_messages.html" %}
{% block main%}
<h1>Registreer</h1>
<form action="{{ url_for_security('register') }}" method="POST" name="register_user_form">
  {{ register_user_form.hidden_tag() }}
  {{ render_field(register_user_form.first_name) }}
  {{ render_field(register_user_form.last_name) }}
  {{ render_field_with_errors(register_user_form.email) }}
  {{ render_field_with_errors(register_user_form.password) }}
  {% if register_user_form.password_confirm %}
    {{ render_field_with_errors(register_user_form.password_confirm) }}
  {% endif %}
  {{ render_field(register_user_form.submit) }}
</form>
{% endblock %}

当我尝试打开注册页面时，出现以下错误:

When I try to open the register page, I get the following error:

AttributeError: 'CharField' object has no attribute '__call__'

我真的不知道该如何进行.我该如何解决这个问题?

I don't really know how to proceed. How can I resolve this issue?