[英]TypeError: 'UnboundField' object is not callable with Flask
我正在運行 Flask 版本 1.1.2
我的注冊表單有以下代碼
from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, SubmitField, BooleanField
from wtforms.validators import DataRequired, Length, EqualTo, Email
class RegistrationForm(FlaskForm):
def __init__(self):
self.username = StringField("Username", validators=[DataRequired(), Length(min=2, max=20)])
self.email = StringField("EMail", validators = [DataRequired(), Email()])
self.password = PasswordField("Password", validators = [DataRequired(), Length(min = 5)])
self.confirm_password = PasswordField("Confirm password", validators = [DataRequired(), EqualTo("password")])
self.submit = SubmitField("Sign Up")
這是注冊頁面:
{% extends "layout.html" %}
{% block content %}
<div class="content-section">
<form method="POST" action="">
<fieldset class = "form-group">
<legend class="border-bottom mb-4">Sign In</legend>
<div class="form-group">
{{ form.username(class="form-control form-control-lg") }}
</div>
<div class="form-group">
{{ form.email(class="form-control form-control-lg") }}
</div>
<div class="form-group">
{{ form.password(class="form-control form-control-lg") }}
</div>
<div class="form-group">
{{ form.confirm_password(class="form-control form-control-lg") }}
</div>
</fieldset>
<div class="form-group">
{{ form.submit(class="btn btn-outline-info") }}
</div>
</div>
<div class="border-top pt-3">
<small class="text-muted">
Already have an account? <a class="ml-2" href="{{ url_for('register') }}">Sign in </a>
</small>
{% endblock content %}
但是,當我嘗試訪問注冊頁面時,出現以下錯誤:
File "D:\xy\-Python\Modules\Flask\Flask_Blog\templates\register.html", line 1, in top-level template code
{% extends "layout.html" %}
File "D:\xy\-Python\Modules\Flask\Flask_Blog\templates\layout.html", line 43, in top-level template code
{% block content %}{% endblock %}
File "D:\xy\-Python\Modules\Flask\Flask_Blog\templates\register.html", line 11, in block "content"
{{ form.username(class="form-control form-control-lg") }}
TypeError: 'UnboundField' object is not callable
(上面至少還有 20 行)
您應該如下更改 class 表示法。 這適用於您要添加類的所有字段。 請參閱https://wtforms.readthedocs.io/en/2.3.x/fields/上的文檔
{{ form.username(class_="form-control form-control-lg") }}
並將您的表單更改為以下內容,請參閱https://flask-wtf.readthedocs.io/en/stable/quickstart.html#creating-forms
class RegistrationForm(FlaskForm):
username = StringField("Username", validators=[DataRequired(), Length(min=2, max=20)])
email = StringField("EMail", validators = [DataRequired(), Email()])
password = PasswordField("Password", validators = [DataRequired(), Length(min = 5)])
confirm_password = PasswordField("Confirm password", validators = [DataRequired(), EqualTo("password")])
submit = SubmitField("Sign Up")
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