在Flask/WTF中读取复选框的值属性

from flask import Flask, render_template, request
from flask_wtf import FlaskForm
from wtforms import SubmitField, SelectMultipleField
from wtforms.validators import DataRequired

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

class MyForm(FlaskForm):
    choices = [('option1', 'Option 1'), ('option2', 'Option 2'), ('option3', 'Option 3')]
    checkboxes = SelectMultipleField('Checkboxes', choices=choices, validators=[DataRequired()])
    submit = SubmitField('Submit')

@app.route('/', methods=['GET', 'POST'])
def index():
    form = MyForm()
    
    if form.validate_on_submit():
        selected_values = form.checkboxes.data
        # 处理选中的值
        # ...
        
    return render_template('index.html', form=form)

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