화성땅 공동구매 POST 부분에서 콘솔 오류가 발생합니다.

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화성땅 공동구매 POST 부분에서 콘솔 오류가 발생합니다.

undefined주차

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답변 완료

화성땅 공동구매 POST 부분에서 DB에 업데이트가 되지 않아 콘솔창을 체크했는데 Uncaught TypeError: Cannot read properties of undefined (reading '0') 오류가 발생합니다.

오류내용은 다음과 같습니다.

Uncaught TypeError: Cannot read properties of undefined (reading '0')

at val (jquery.min.js:2:69091)

at i (jquery.min.js:2:73313)

at Dt (jquery.min.js:2:73205)

at S.param (jquery.min.js:2:73524)

at Function.ajax (jquery.min.js:2:76904)

at save_order ((index):75:15)

at HTMLButtonElement.onclick ((index):116:84)

작성한 코드 및 에러 메세지

app.py 코드입니다.

from pymongo import MongoClient
import certifi
ca = certifi.where()
client = MongoClient('mongodb+srv://test:<sparta>@cluster0.ja7zeys.mongodb.net/Cluster0?retryWrites=true&w=majority', tlsCAFile=ca)
db = client.dbsparta

from flask import Flask, render_template, request, jsonify
app = Flask(__name__)

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

@app.route("/mars", methods=["POST"])
def web_mars_post():
    name_receive = request.form['name_give']
    address_receive = request.form['address_give']
    size_receive = request.form['size_give']

    doc = {
        'name': name_receive,
        'address': address_receive,
        'size': size_receive
    }
    db.mar.insert_one(doc)

    return jsonify({'msg': '주문 완료!'})

@app.route("/mars", methods=["GET"])
def web_mars_get():
    return jsonify({'msg': 'GET 연결 완료!'})

if __name__ == '__main__':
    app.run('0.0.0.0', port=5000, debug=True)

index.html 코드입니다.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"
          integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"
            integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"
            crossorigin="anonymous"></script>

    <link href="https://fonts.googleapis.com/css2?family=Gowun+Batang:wght@400;700&display=swap" rel="stylesheet">

    <title>선착순 공동구매</title>

    <style>
        * {
            font-family: 'Gowun Batang', serif;
            color: white;
        }

        body {
            background-image: linear-gradient(0deg, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://cdn.aitimes.com/news/photo/202010/132592_129694_3139.jpg');
            background-position: center;
            background-size: cover;
        }

        h1 {
            font-weight: bold;
        }

        .order {
            width: 500px;
            margin: 60px auto 0px auto;
            padding-bottom: 60px;
        }

        .mybtn {
            width: 100%;
        }

        .order > table {
            margin: 40px 0;
            font-size: 18px;
        }

        option {
            color: black;
        }
    </style>
    <script>
        $(document).ready(function () {
            show_order();
        });

        function show_order() {
            $.ajax({
                type: 'GET',
                url: '/mars',
                data: {},
                success: function (response) {
                    alert(response['msg'])
                }
            });
        }

        function save_order() {
            let name = $('#name').val
            let address = $('#address').val
            let size = $('#size').val

            $.ajax({
                type: 'POST',
                url: '/mars',
                data: {name_give: name, address_give: address, size_give: size},
                success: function (response) {
                    alert(response['msg'])
                    window.location.reload()
                }
            });
        }
    </script>
</head>
<body>
<div class="mask"></div>
<div class="order">
    <h1>화성에 땅 사놓기!</h1>
    <h3>가격: 평 당 500원</h3>
    <p>
        화성에 땅을 사둘 수 있다고?<br/>
        앞으로 백년 간 오지 않을 기회. 화성에서 즐기는 노후!
    </p>
    <div class="order-info">
        <div class="input-group mb-3">
            <span class="input-group-text">이름</span>
            <input id="name" type="text" class="form-control">
        </div>
        <div class="input-group mb-3">
            <span class="input-group-text">주소</span>
            <input id="address" type="text" class="form-control">
        </div>
        <div class="input-group mb-3">
            <label class="input-group-text" for="size">평수</label>
            <select class="form-select" id="size">
                <option selected>-- 주문 평수 --</option>
                <option value="10평">10평</option>
                <option value="20평">20평</option>
                <option value="30평">30평</option>
                <option value="40평">40평</option>
                <option value="50평">50평</option>
            </select>
        </div>

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