python - 如何使用 flask 和 wtforms 使单选字段显示默认值

Question

我正在使用单选字段，我希望将默认值呈现为 (.) 而不是 ( ) 。我尝试了直接的方法:

choice_switcher = RadioField('Choice?', [validators.Required()], choices=[('choice1', 'Choice One'),('choice2', 'Choice Two')], default='choice1')

它没有用。它将两个选择呈现为:

( ) Choice One
( ) Choice Two

而我想看到这个:

(.) Choice one
( ) Choice Two

Answer 1

对我来说没问题:

例子.py

from flask import Flask, render_template
from flask_wtf import Form
from wtforms import validators, RadioField

app = Flask(__name__)

app.secret_key = 'TEST'

class TestForm(Form):
    choice_switcher = RadioField(
        'Choice?',
        [validators.Required()],
        choices=[('choice1', 'Choice One'), ('choice2', 'Choice Two')], default='choice1'
    )


@app.route('/')
def hello_world():
    testform = TestForm()
    return render_template('test_form.html', form=testform)


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

test_form.html

{{ form.choice_switcher() }}

生成的 html:

<ul id="choice_switcher">
    <li><input checked id="choice_switcher-0" name="choice_switcher" type="radio" value="choice1"> <label
            for="choice_switcher-0">Choice One</label></li>
    <li><input id="choice_switcher-1" name="choice_switcher" type="radio" value="choice2"> <label
            for="choice_switcher-1">Choice Two</label></li>
</ul>