我有一個客戶端視圖,通過AJAX調用PHP文件來更新表單後面的數據庫。視圖是基本的CRUD操作,並主要由一個表格和一組輸入的:Ajax調用不返回JSON錯誤
HTML
<div class="item-details">
<form id="item-info-form">
<input type="hidden" name="id" value="1" />
<input type="text" name="name" size="50" value="Item 1" />
<input type="text" id="start_date" name="start_date" value="2012-01-13" />
<input type="text" id="end_date" name="end_date" value="2014-02-03" />
<input type="text" name="location" size="50" value="Home" />
<select name="item_type">
<option value="1" selected="selected"> Type 1 </option>
<option value="2"> Type 2 </option>
<option value="3"> Type 3 </option>
</select>
<button id="update-item-info">Save Changes</button>
</form>
在按鈕的點擊,我調用PHP腳本來更新有關的項目通過AJAX。
的Javascript
$('#update-item-info').on('click', function (e)
{
e.preventDefault();
console.log("Updating Item Info...");
$.ajax({
type: "POST",
url: "AJAX/save-item-info.php",
data: $('#item-info-form').serialize(),
dataType: "application/JSON"
}).done(function (data)
{
console.log(data.status);
});
});
,這段代碼被髮布到服務器PHP是:
<?php
include("../db-connection.php");
$mysqli = new mysqli($mysqli_host, $mysqli_user, $mysqli_pass, $db_name);
if ($mysqli->connect_errno)
{
$response_array['status'] = "Connect failed: %s\n" . $mysqli->connect_error;
}
if(!($stmt = $mysqli->prepare("UPDATE items SET name = ?, start_date = ?, end_date = ?, location = ?, exhibit_type = ? WHERE id = ?")))
{
$response_array['status'] = "Prepare Statement failed: " . $mysqli->error . "\n";
}
if (!($stmt->bind_param('sssssi', $_POST['name'], $_POST['start_date'], $_POST['end_date'], $_POST['location'], $_POST['exhibit_type'], $_POST['id'])))
{
$response_array['status'] = "Binding parameters failed: " . $stmt->error . "\n";
}
if (!($stmt->execute()))
{
$response_array['status'] = "Execute failed: " . $stmt->error . "\n";
}
else
{
$response_array['status'] = "Success";
}
$stmt->close();
header('Content-type: application/json');
die(json_encode($response_array));
?>
這會更新數據庫,如果一切正常,螢火告訴我數據。狀態設置爲「成功」。但是如果我註釋掉數據庫include(模擬可怕的錯誤),服務器代碼根本不會返回任何東西,更不用說data.status,而我只是得到一個通用的500錯誤。
最奇怪的是,無論數據庫是否更新,ajax.done()都不會觸發,所以我看不到是否設置了data.status。
'dataType:「json」' –