Flask-WTFforms TypeError：__ init __（）接受2个参数3

Question

我一直在尝试建立这个烧瓶登录系统，但不断收到此错误。我查找了特定的错误，这些建议似乎不适合这个问题。

我在模板中取出了两个（电子邮件和名称）字段并且它有效，但我不确定为什么我想你应该能够拥有任意数量的字段。此外，它不会将用户数据提交到数据库。

from flask import Flask, render_template, redirect
from flask_wtf import FlaskForm
from wtforms import BooleanField, StringField, PasswordField
from wtforms.validators import InputRequired, Length, Email
from flask_bootstrap import Bootstrap
from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__)
app.config['SECRET_KEY'] = 'sosecretbro'
app.config['SQLALCHEMY_DATABASE_URI']= 'sqlite:////Users/myname/Desktop/officeplace/database.db'
Bootstrap(app)
db = SQLAlchemy(app) 


class User(db.Model):
    id = db.Column('id', db.Integer(), primary_key=True)
    name = db.Column('name', db.String(50))
    username = db.Column('username', db.String(20), unique=True)
    password = db.Column('password', db.String(80), unique=True)
    email = db.Column('email', db.String(50))


class RegisterForm(FlaskForm):
    name = StringField('name', validators=[InputRequired(), Length(min=3, max=50)])
    username = StringField('username', validators=[InputRequired(), Length(min=8, max=15)])
    password = StringField('password', validators=[InputRequired(), Length(min=8, max=80)])
    email = StringField('email', validators=[InputRequired, Email(message=None)])

class LoginForm(FlaskForm):
    username = StringField('username', validators=[InputRequired(), Length(min=8, max=15)])
    password = StringField('password', validators=[InputRequired(), Length(min=8, max=80)])


@app.route('/')
def index():
    return 'We here now'


@app.route('/register', methods=['GET', 'POST'])
def register():
    form = RegisterForm()
    if form.validate_on_submit():
        new_user = User(username=form.username.data, password=form.password.data)
        db.session.add(new_user)
        db.session.commit()
        return '<h1>' 'New user created' '<h1>'
    return render_template('register.html', form=form)

@app.route('/login', methods=['GET', 'POST'])
def login():
    form = LoginForm()
    if form.validate_on_submit():
        return render_template('login.html', form=form)


if (__name__) == '__main__':
    app.run(debug = True)

模板 -

{% extends "bootstrap/base.html" %}
{% import "bootstrap/wtf.html" as wtf %}

{% block title %}
Register Here
{% endblock %}

{% block styles %}
{{super()}}
<link rel="stylesheet" href="{{url_for('.static', filename='register.css')}}">
{% endblock %}

{% block content %}
    <div class="container">

      <form class="form-register" method="POST" action="/register">
        <h2 class="form-register-heading">Register, Fool.</h2>
        {{ form.hidden_tag() }}
        {{ wtf.form_field(form.name) }}
        {{ wtf.form_field(form.username) }}
        {{ wtf.form_field(form.password) }}
        {{ wtf.form_field(form.email) }}
     <button class="btn btn-lg btn-primary btn-block" type="submit">Register</button>
      </form>

    </div> <!-- /container -->
{% endblock %}

追溯 -

File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask/app.py", line 1997, in __call__
return self.wsgi_app(environ, start_response)
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask/app.py", line 1985, in wsgi_app
response = self.handle_exception(e)
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask/app.py", line 1540, in handle_exception
reraise(exc_type, exc_value, tb)
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask/_compat.py", line 33, in reraise
raise value
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask/app.py", line 1982, in wsgi_app
response = self.full_dispatch_request()
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask/app.py", line 1614, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask/app.py", line 1517, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask/_compat.py", line 33, in reraise
raise value
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask/app.py", line 1612, in full_dispatch_request
rv = self.dispatch_request()
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask/app.py", line 1598, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/Users/nicksmith/Desktop/officeplace/officeplace.py", line 43, in register
if form.validate_on_submit():
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/flask_wtf/form.py", line 101, in validate_on_submit
return self.is_submitted() and self.validate()
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/wtforms/form.py", line 310, in validate
return super(Form, self).validate(extra)
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/wtforms/form.py", line 152, in validate
if not field.validate(self, extra):
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/wtforms/fields/core.py", line 204, in validate
stop_validation = self._run_validation_chain(form, chain)
File "/Users/nicksmith/Desktop/officeplace/lib/python3.6/site-packages/wtforms/fields/core.py", line 224, in _run_validation_chain
validator(form, self)
TypeError: __init__() takes from 1 to 2 positional arguments but 3 were given