从使用flask到python的复选框中获取值列表

Question

我试图从复选框中获取值列表.

我找到了一篇文章,希望解决我的问题(如果在烧瓶上检查复选框怎么办),但是,我继续收到此错误:错误请求浏览器(或代理)发送了此服务器无法理解的请求.

我将发布我的整个代码块以将其放在上下文中,但如果没有添加复选框,它可以正常工作.事实上,我有一个下拉菜单相同的选项,它工作正常.

请注意,虽然我定期在python中编码,但我是html和flask的初学者.

               <form action='/user_rec' method='POST' id='submitform'>
                <input type='text', placeholder='user id'  name='user_input'>
                <button type="submit" class="btn btn-success">Recommend</button>
                <br><br>
                <h2>Other Options</h2>
                <h5>Best Number of Players</h5>
                <div class="checkbox">
                  <label><input type="checkbox" name="check" value="1">1</label>
                </div>
                <div class="checkbox">
                  <label><input type="checkbox" name="check" value="2">2</label>
                </div>
                <div class="checkbox">
                  <label><input type="checkbox" name="check" value="3">3</label>
                </div>
                <div class="checkbox">
                  <label><input type="checkbox" name="check" value="4">4</label>
                </div>
                <div class="checkbox">
                  <label><input type="checkbox" name="check" value="5">5+</label>
                </div>
                <h5>Minimum Play Time (minutes)</h5>
                <input type="text", placeholder='0'  name='min_time'>
                <br><br>
                <h5>Maximum Play Time (minutes)</h5>
                <input type="text", placeholder='500000'  name='max_time'>
              </form>

和我的python代码:

@app.route('/user_rec', methods=['POST'])
def button1():
    user_name = (request.form['user_input'])
    best_num_player = (request.form['best_num_player'])
    min_time = (request.form['min_time'])
    max_time = (request.form['max_time'])
    players = request.form.getlist('check')

Answer 1

我认为您的代码存在两个问题:

1. 'best_num_player' 不是dict形式的关键.
2. 发布后您没有返回重定向.

这是一个app.py你可以尝试的例子.(我以为你把模板命名了index.html)

from flask import Flask, render_template, redirect, request

app = Flask(__name__)

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/user_rec', methods=['POST'])
def user_rec():
    user_name = request.form.get('user_input')
    min_time = request.form.get('min_time')
    max_time = request.form.get('max_time')
    players = request.form.getlist('check')
    print(user_name, min_time, max_time, players)
    return redirect('/')

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