php 为什么我的 ajax 请求得到响应 0？
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Why is my ajax request getting response 0?
提问by UzumakiDev
I've setup the basic wordpress ajax example in my wp theme. The trigger is made by modernizr.js checking the media queries on the page.
我已经在我的 wp 主题中设置了基本的 wordpress ajax 示例。触发器由 Modernizr.js 检查页面上的媒体查询生成。
jQuery(document).ready(function($) {
if(Modernizr.mq('only all and (max-width:6300px)')) {
var data = {
action: 'my_action',
whatever: ajax_object.we_value // We pass php values differently!
};
// We can also pass the url value separately from ajaxurl for front end AJAX implementations
jQuery.post(ajax_object.ajax_url, data, function(data) {
$("#trending-Container").html(data).fadeIn(1000);
});
}
});//end function
I have localized and enqueue'd my scripts.
我已经对我的脚本进行了本地化和排队。
wp_enqueue_script('mainJS', get_template_directory_uri() . '/js/mainJS.js', array("jquery") );
wp_localize_script( 'mainJS', 'ajax_object',
array( 'ajax_url' => admin_url( 'admin-ajax.php' ), 'we_value' => 1234 ) );
and finally the function that handles the request is:
最后处理请求的函数是：
add_action('wp_ajax_my_action', 'my_action_callback');
add_action('wp_ajax_nopriv_my_action', 'my_action_callback');
function my_action_callback() {
global $wpdb;
$whatever = intval( $_POST['whatever'] );
$whatever += 10;
echo $whatever;
die();
}
This constantly gives me a response of 0 (no properties) and I do not know why. P.S This is all local.
这不断给我 0（无属性）的响应，我不知道为什么。PS 这都是本地的。
Status code 200
Host:lart.co.uk
Origin:http://lart.co.uk
Referer:http://lart.co.uk/
User-Agent:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/28.0.1500.71 Chrome/28.0.1500.71 Safari/537.36
X-Requested-With:XMLHttpRequest
Form Dataview sourceview URL encoded
action:my_action
whatever:1234
回答by brasofilo
Everything has to match here:
一切都必须在这里匹配：
PHP
PHP
add_action('wp_ajax_my_action', 'my_action');
add_action('wp_ajax_nopriv_my_action', 'my_action');
function my_action() {}
JS
JS
var data = {
action: 'my_action',
whatever: ajax_object.we_value
};
Also, you're missing security checks and a better handling of the response.
Check this examples: [ 1 ]and [ 2 ].
回答by abrar
Add the "exit" end of the function as shown below, this will fix the return 0with the response in WordPress on using the ajax request.
添加函数的“退出”端，如下所示，这将修复WordPress 中使用 ajax 请求时返回 0的响应。
add_action('wp_ajax_nopriv_getStateList', 'getStateList');
add_action('wp_ajax_getStateList', 'getStateList');
function getStateList() {
global $wpdb;
$countryId = $_POST['countryId'];
$results = $wpdb->get_results("SELECT id,name FROM regions where country_id ='".$countryId."' ");
echo json_encode(array('status'=>200,'data'=>$results));
exit;
}
回答by Noman
Here is the full example to solve this issue:
这是解决此问题的完整示例：
JavaScript:
JavaScript：
$(document).ready(function() {
$("#submit").click(function(e) {
var demo = 'demo';
var ajaxurl = '<?php echo admin_url("admin-ajax.php", null); ?>';
data = { action: "data_insert", demo: demo};
$.ajax({
url: ajaxurl,
data: data,
dataType: 'json',
type: 'post',
success: function(response) {
console.log(response);
}
});
});
});
PHP:
PHP：
add_action('wp_ajax_data_insert', 'data_insert');
add_action('wp_ajax_nopriv_data_insert', 'data_insert');
function data_insert() {
$data = $_POST['demo'];
echo json_encode($data);
die();
}
