Question

您好我使用以下代码将下面的html页面中输入的值保存到MySQL DB。添加了下拉列表“RequestType”，但是当从“RequestType”中选择值并点击提交按钮时遇到以下错误。放置了Flask和HTML中使用的代码。请求您的帮助以解决此问题。

TypeError：execute（）需要2到3个位置参数，但是给出了5个

Basic html page with three values i.e. name, email and Request Type

Flask中使用的代码如下

from flask import Flask, render_template, request, redirect
from flask_mysqldb import MySQL


app = Flask(__name__)

# Configure db
#db = yaml.load(open('db.yaml'))
app.config['MYSQL_HOST'] = 'localhost'
app.config['MYSQL_USER'] = 'root'
#app.config['MYSQL_PASSWORD'] = 'P@$$w0rd'
app.config['MYSQL_DB'] = 'flaskapp'




mysql = MySQL(app)

@app.route('/', methods=['GET', 'POST'])
def index():
    if request.method == 'POST':
        # Fetch form data
        userDetails = request.form
        name = userDetails['name']
        email = userDetails['email']
        requesttype = userDetails.get('requesttype')
        cur = mysql.connection.cursor()
        cur.execute("INSERT INTO users(name, email, requesttype) VALUES(%s, %s, [])", name, email, requesttype)
        mysql.connection.commit()
        cur.close()
        return 'Save is Successful'
    return render_template('index.html')

HTML代码如下。

 <form method="POST" action="{{ url_for('index') }}">

    Name <input type="text" name="name" />
      <br>

    Email <input type="email" name="email" />
      <br> 
    RequestType <select id="RequestType" name = "RequestType" >
     <option selected value="1">New</option>
     <option value="0">Old</option>
    </select><br>  
    <input type="Submit">
    </form>

Answer 1

以下内容应该有效

def index():
    if request.method == 'POST':
        # Fetch form data
        userDetails = request.form
        name = userDetails['name']
        email = userDetails['email']
        requesttype = userDetails['RequestType']
        cur = mysql.connection.cursor()
        cur.execute("""INSERT INTO users (name, email, requesttype) VALUES (%s, %s, %s)""", (name, email, requesttype))
        mysql.connection.commit()
        cur.close()
        return 'Save is Successful'
     return render_template('index.html')

三重引号将阻止您在MySQL中出现任何语法错误。另请注意(name, email, requesttype)处添加的括号。

如何将值从HTML下拉列表存储到Flask中的MySQL DB

1 个答案: