Question

im试图从Flask FormFields中的子表单获取输入数据。它可以工作，但是如果我更改表单中的值并提交，则只会得到旧值，而不会得到更改后的值。

这是我的应用代码：

from flask import Flask, render_template
from flask_wtf import FlaskForm
from wtforms import Form, FieldList, FormField, FloatField, SubmitField

class Subform(Form):
    fee = FloatField()

class Mainform(FlaskForm):
    fees = FieldList(FormField(Subform))
    submit = SubmitField('Update!')
    
# Initialize app
app = Flask(__name__)
app.config["DEBUG"] = True
app.config['SECRET_KEY'] = 'sosecret'

@app.route('/', methods=['GET', 'Post'])
def init():
    form = Mainform()
    subform = Subform()
    while len(form.fees) > 0:
        form.fees.pop_entry()
    for i in range(3):
        subform.fee = i #inilialize the subforms with some data
        form.fees.append_entry(subform)
    if form.validate_on_submit():
        for subform in form.fees:
            print(subform.fee.data) #!!!
    return render_template('webpage.html', form=form)

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

这是我的html：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form method="POST" action="">
        {{ form.hidden_tag() }}

        <p>forms to update:</p>
        {% for subform in form.fees %}
            {{subform.id}} {{subform.fee}}<br>
        {% endfor %}
        {{form.submit}}
    </form>

</body>
</html>

在烧瓶wtf中提交表单字段后无数据

0 个答案: