Flask：用户输入 [POST]

Question

当用户提交输入时，我正在尝试执行一个脚本，该脚本将用户的输入作为参数并将用户重定向回主页。当我运行下面的脚本时，除了重定向之外，一切似乎都正常。当我在网络浏览器中点击提交时，我没有提交数据。

from flask import Flask, render_template, redirect, request
from Index_generator import index_generator
from Yelp_api import request_yelp

@app.route('/home_city',methods = ['POST'])
def home_city():
    CITY=request.form['city']
    request_yelp(DEFAULT_LOCATION=CITY) #This function executes the script
    return redirect('/')

Answer 1

如果将url_for 与redirect 一起使用会怎样？

from flask import Flask, render_template, redirect, request, url_for
from Index_generator import index_generator
from Yelp_api import request_yelp

@app.route('/', methods = ['GET'])
def home():
    return 'Hello World'

@app.route('/home_city',methods = ['POST'])
def home_city():
    CITY=request.form['city']
    request_yelp(DEFAULT_LOCATION=CITY) #This function executes the script
    return redirect(url_for('home'))