无法在表单中输入文本（Flask、WTForm）

Question

我想用 Flask 和 WTForms 建立一个网站。但是我无法让文本输入正常工作（该页面不允许我在框中输入任何文本）。你能告诉我哪里出了问题吗？

页面是这样的：

这是我用 WTForms 创建的表单

from flask_wtf import FlaskForm
from wtforms import SubmitField, IntegerField
from wtforms.validators import DataRequired, NumberRange, EqualTo


class RequestDataForm(FlaskForm):

    feature_count = IntegerField('Number of features', validators=[DataRequired(), NumberRange(min=1, max=50)])

    effective_rank = IntegerField('Effective Rank', validators=[DataRequired(), NumberRange(min=1, max=EqualTo(feature_count))])

    noise = IntegerField('Noise', validators=[DataRequired(), NumberRange(min=0, max=1)])

    submit = SubmitField('Submit')

这是layout.html

<!DOCTYPE html>
<html>
<style>
</style>
<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
</head>
<body>
    <main role="main" class="container">
      <div class="row">
        <div class="col-md-8">
          {% 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 %}
          {% block page_content %}{% endblock %}
        </div>
      </div>
    </main>
</body>
</html>

这是我的 page.html

{% extends 'layout.html' %}
{% block page_content %}
    <div class="content-section">
        <form method="POST" action="">
            {{ form.hidden_tag() }}
            <fieldset class="form-group">
                <legend class="border-bottom mb-4">Fill with values.</legend>
                <div class="form-group">
                    {{ form.feature_count.label(class="form-control-label") }}
                    {{ form.feature_count.label(class="form-control form-control-lg") }}
                </div>
                <div class="form-group">
                    {{ form.effective_rank.label(class="form-control-label") }}
                    {{ form.effective_rank.label(class="form-control form-control-lg") }}
                </div>
                <div class="form-group">
                    {{ form.noise.label(class="form-control-label") }}
                    {{ form.noise.label(class="form-control form-control-lg") }}
                </div>
            </fieldset>
            <div class="form-group">
                {{ form.submit(class="btn btn-outline-info") }}
            </div>
        </form>
    </div>
{% endblock page_content%}

Answer 1

根据您的 HTML，您只是为每个表单元素而不是元素本身输出 label。尝试将它们全部更新为：

<div class="form-group">
    {{ form.noise.label(class="form-control-label") }}
    {{ form.noise(class="form-control form-control-lg") }}
</div>

无法在表单中输入文本（Flask、WTForm）

Cannot enter text into form (Flask, WTForm)

html

python

flask

wtforms

flask-wtforms