我试图用PHP删除SQL数据库中的一行。 行由该产品的名称,用户类型决定SQL + AJAX + PHP POST请求
我创建了一个简单的表格,删除已经输入产品:
<article>
<section>
<fieldset><legend><span>Would you like to add a Product?</span> </legend>
<form method="POST" id = "myForm" name="myForm" onsubmit="return false;">
<br>
<p>Enter a name of product <input type='text' id='name' name = 'name'/></p>
<br>
<input name="submit" id ="submit" type="button" value="Find Product"/>
</form>
</fieldset>
<div id="fetchProduct">
</div>
</section>
</article>
说我已经进入了数据在另一种形式,它进入数据库,但当我尝试删除它时,我收到未定义的索引:错误名称,当我尝试删除。
下面是使用中删除的产品脚本IM:
<?php
include("database/connect_database.php");
$name = $_POST['name'];
$query = "DELETE FROM products WHERE product_name = '$name' ";
$result = $database->query($query) OR die ("Failed query $query");
echo $database->error."<p>";
if($result){
echo "Record deleted";
}
else {
echo "Product not found!";
}
?>
林还使用AJAX通过名称:
fetch = function() {
// declare the two variables that will be used
var xhr, target, changeListener;
// find the element that should be updated
target = document.getElementById("fetchProduct");
var name = document.getElementById("name").value;
var variable = "name="+name;
// create a request object
xhr = new XMLHttpRequest();
changeListener = function() {
if (xhr.readyState === 4 && xhr.status === 200) {
target.innerHTML = xhr.responseText;
} else {
target.innerHTML = "<p>Something went wrong.</p>";
}
};
xhr.open("POST", "deleteProductSQL.php", true);
xhr.onreadystatechange = changeListener;
xhr.send(variable);
};
pageLoaded = function() {
var fetchButton = document.getElementById("submit");
if (fetchButton) {
fetchButton.addEventListener("click", fetch);
}
};
window.onload = pageLoaded;
谁能指出哪里我去可怕的错误在这里,因为我只是不能确定为什么它不允许我删除该行,为什么我会收到未定义的错误。
谢谢你们的时间
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