Ajax 数据帖子无法通过发布的 url

Question

我正在尝试将数据发布到仅包含 php 代码的 php 站点，当在第一页上单击 ID #mR-RateableFramePicture 时应执行该代码。这是通过 ajax 请求完成的：

    $('#mR-RateableFramePicture').dblclick(function() {
        $.ajax({
            type: "POST",
            url: 'moduleRateable/scriptSavedStyle.php',
            data: { rateableUserID: rateableUserID, rateablePictureID: rateablePictureID},
            success: function() {
                $('#DynamicContent').load('moduleRateable/scriptSavedStyle.php');
            }
        });
    });

    var rateableUserID = $('input[name="rateableUserID"]').val();
    var rateablePictureID = $('input[name="rateablePictureID"]').val();

这里是 ajax 发布到的 url 目的地：

<?php
// Start the session (enable global $_SESSION variable).
session_start();

// Include database-link ($conn).
include '../../scriptMysqli.php';

// Make global variable to simple variable.
$userID = $_SESSION["ID"];

//Save the rateable style to one owns libary of saved styles.    
$ratedUserID = $_POST['rateableUserID'];
$ratedPictureID = $_POST['rateablePictureID'];


$sql = $conn->query("UPDATE styles WHERE userID = '$ratedUserID;' AND 
pictureID = '$ratedPictureID' SET savedByUser = '$userID'");

?>

我收到以下错误消息：

注意：未定义索引：第 12 行 C:\xampp\htdocs\mystyle\app\moduleRateable\scriptSavedStyle.php 中的 rateableUserID

注意：未定义索引：第 13 行 C:\xampp\htdocs\mystyle\app\moduleRateable\scriptSavedStyle.php 中的 rateablePictureID

Answer 1

您没有在 $.ajax({}) 调用中传递变量 rateableUserID 和 rateablePictureID 的值，如下所示 -

data: { rateableUserID: rateableUserID, rateablePictureID: rateablePictureID}。除非它们是全局定义的，否则您将在 PHP 端获得未定义的值。请确保在调用之前已将值分配给 rateableUserID 和 rateablePictureID。但是，您仍然必须检查您是否实际上在您的发布请求中传递了该变量，因为 PHP 找不到键名。

函数应该如下所示

$('#mR-RateableFramePicture').dblclick(function() {
     var rateableUserID = $('input[name="rateableUserID"]').val();
     var rateablePictureID = $('input[name="rateablePictureID"]').val();

        $.ajax({
            type: "POST",
            url: 'moduleRateable/scriptSavedStyle.php',
            data: { "rateableUserID": rateableUserID, "rateablePictureID": rateablePictureID},
            success: function() {
                $('#DynamicContent').load('moduleRateable/scriptSavedStyle.php');
            }
        });
    });