WTForms Flask(wtf_flask)验证器如何包含RadioField的“必需”属性

from flask import Flask, render_template
from flask_wtf import FlaskForm
from wtforms import RadioField
from wtforms.validators import DataRequired

app = Flask(__name__)
app.config['SECRET_KEY'] = 'your_secret_key'

class MyForm(FlaskForm):
    radio_field = RadioField('Radio Field', choices=[('option1', 'Option 1'), ('option2', 'Option 2')], validators=[DataRequired()])

@app.route('/', methods=['GET', 'POST'])
def index():
    form = MyForm()
    if form.validate_on_submit():
        # 处理表单提交
        pass
    return render_template('index.html', form=form)

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