在站点的子域上构建一个 wordpress 插件（我只提到它是因为我认为这不是 xss 问题）。我将 Ajax 与 Jquery 一起用于管理端（后端，而不是前端）的功能；在管理面板上。
但是，Ajax 一直返回 0；尽管我在调用/处理程序函数的末尾有“die()”并使用了正确的 Ajax 'Action' 调用 (wp_ajax_ACTION)。完整代码如下。希望你能帮忙。
JQUERY...（'t-admin.js'）：
jQuery(document).ready(function($) {
$('#p2_form1').submit(function() {
var data = {
action: "results_test"
};
try {
$.post(ajaxurl, data, function(response) {
// jQuery('#ajax_data').html(response);
alert ('Response is: ' + response);
// this call should return "DATA TO BE ECHOED!"
// alert (typeof response); // this returns 'string'; don't know why
});
} catch (err) {
return err;
}
return false;
});
});
PHP 调用/处理程序文件（管理面板第 2 页）...（'t-page2.php'）：
<?php
// protect page; make sure user can update opts
if ( !current_user_can('manage_options') ) {
wp_die (__("You don't have permission to access this page.") );
}
?>
<div class="wrap">
<?php screen_icon('options-general'); ?>
<h2>
<?php _e('Manage Page 2 Settings:'); ?>
</h2>
<p>Settings form here...
<form name="p2_form1" id="p2_form1" method="post" action="">
<?php settings_fields('tp2_opts_groups'); ?>
<p>input fields, radio buttons, blah blah</p>
<input type="submit" id="test_submit" value="Test Submit Button" class="button-primary" />
</form>
<?php
// error_reporting(E_ALL);
// TESTING AJAX RESUTLS...
function my_action_callback() {
echo ("DATA TO BE ECHOED!");
die();
}
// Keep getting 0. Why? Am using "die()" at end and wp_ajax_ACTION is correct.
add_action( 'wp_ajax_results_test', 'my_action_callback');
// add_action( 'wp_ajax_nopriv_results_test', 'my_action_callback');
// NoPriv not necessary. This is on Admin Panels (Backend, NOT Frontend)
?>
<p> data will appear here...</p>
<div id="ajax_data">
<!-- data to eventually appear here! -->
</div>
</div>
其余文件应该有人需要查看整个代码...
插件文件...（'test-plugin.php'）：
<?php
defined( 'ABSPATH' ) OR exit;
/*
Plugin Name: Test Plugin
Version: 1.0
Author: WP Plugin Newbie
Description: Building my first plugin.
Version: 1.0
License: Free
*/
// protect page
if ( !function_exists('add_action') ) {
echo ( "Sorry, this page doesn't do much when accessed directly" );
exit(0);
}
// main class to handle function calls
class TestPluginCls {
public $version_num = '1.0';
function TestPluginCls() {
// get constants
$this->TestPluginConstants();
// register db setup
register_activation_hook( __FILE__, array(&$this, 'setup_DB') );
// action
add_action( 'plugins_loaded', array(&$this, 'start_TestPlugin') );
}
// set up db
function setup_DB() {
// require
require_once ( dirname(__FILE__) . '/admin/t-dbsetup.php' );
// call db class
$this->TestPluginDbSetupCls = new TestPluginDbSetupCls();
}
// launch Test Plugin
function start_TestPlugin() {
if ( is_admin() ) {
// require
require_once ( dirname(__FILE__) . '/admin/t-admin.php' );
// setup Admin area
$this->TestPluginAdminAreaCls = new TestPluginAdminAreaCls();
}
}
// define constants
function TestPluginConstants() {
define ( 'TestPlugin_FOLDER', plugin_basename(dirname(__FILE__)) );
define ( 'TestPlugin_URL', plugin_dir_url(__FILE__) );
define ( 'TestPlugin_PATH', plugin_dir_path(__FILE__) );
}
}
global $TestPlugin;
global $wpdb;
$TestPlugin = new TestPluginCls();
?>
管理员/菜单构建类...（'t-admin.php'）：
<?php
error_reporting(E_ALL);
// ini_set('display_errors', '1');
class TestPluginAdminAreaCls {
public $role = 'activate_plugins';
function TestPluginAdminAreaCls() {
// register stuff
add_action( 'admin_menu', array(&$this, 'TestPluginMenu') );
add_action( 'admin_init', array(&$this, 'register_tplugin_options') );
// add_action( 'wp_ajax_get_tmps', 'my_action_cb'); // placing here produces error notice!
// add_action( 'admin_enqueue_scripts', array(&$this, 'tp_load_admin_scripts') );
}
// build menu
function TestPluginMenu() {
$phsfx_home = add_menu_page( __('Test Plugin Admin Area'), __('Test Plugin'), $this->role, TestPlugin_FOLDER, array(&$this, 'output_page') );
$phsfx_main = add_submenu_page( TestPlugin_FOLDER, __('Test Plugin Admin Area'), __('TP Main'), $this->role, TestPlugin_FOLDER, array(&$this, 'output_page') );
$phsfx_p1 = add_submenu_page( TestPlugin_FOLDER, __('Test Plugin : Page 1'), __('TP Page 1'), $this->role, 'tp1', array(&$this, 'output_page') );
$phsfx_p2 = add_submenu_page( TestPlugin_FOLDER, __('Test Plugin: Page 2'), __('TP Page 2'), $this->role, 'tp2', array(&$this, 'output_page') );
// only show admin scripts and dependencies on TP pages as needed
add_action( 'admin_print_scripts-' . $phsfx_home, array(&$this, 'tp_load_admin_scripts') );
add_action( 'admin_print_scripts-' . $phsfx_main, array(&$this, 'tp_load_admin_scripts') );
add_action( 'admin_print_scripts-' . $phsfx_p1, array(&$this, 'tp_load_admin_scripts') );
add_action( 'admin_print_scripts-' . $phsfx_p2, array(&$this, 'tp_load_admin_scripts') );
}
function register_tplugin_options() {
// add_action( 'wp_ajax_get_tmps', 'my_action_cb'); // placing here throws crazy error notice!
register_setting( 'tp1_opts_groups', 'tp1_opts' );
register_setting( 'tp2_opts_groups', 'tp2_opts');
}
// output proper page
function output_page() {
switch ($_GET['page']) {
case "tp1" :
include_once( dirname(__FILE__) . '/t-page1.php');
break;
case "tp2" :
include_once( dirname(__FILE__) . '/t-page2.php');
break;
default :
include_once( dirname(__FILE__) . '/t-main.php');
break;
}
}
// scripts/css
function tp_load_admin_scripts() {
// load JS
wp_enqueue_script ( array('jquery', 'farbtastic', 'media-upload', 'postbox', 'thickbox') );
wp_enqueue_script ( 't-admin-js', TestPlugin_URL.'js/t-admin.js', array('jquery'), '1.0' );
// localize???
//wp_localize_script ( 't-admin-js', 'ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) ); // don't know if necessary
// load CSS
wp_enqueue_style ( array('thickbox', 'farbtastic') );
wp_enqueue_style ( 't-admin-css', TestPlugin_URL.'css/t-admin.css', array(), '1.0', 'screen' );
}
}
?>
数据库设置类...（'t-dbsetup.php'）：
<?php
class TestPluginDbSetupCls {
function TestPluginDbSetupCls() {
global $wpdb;
// insert info into DB...
// Tested. All code here works.
}
}
?>
管理面板主页...（'t-main.php'）：
<?php
// protect page
if ( !current_user_can('manage_options') ) {
wp_die (__("You don't have permission to access this page.") );
}
?>
<div class="wrap">
<h2>Test Plugin</h2>
<p><b>Manage Page 1:</b></p>
<blockquote class="section">
<p><a href="#">Link to page 1 settings</a> -- Here is where you can...</p>
</blockquote>
<p><b>Manage Page 2:</b></p>
<blockquote class="section">
<p><a href="#">Link to page 2 settings</a> -- Here is where you can...</p>
</blockquote>
</div>
管理面板第 1 页...（'t-page1.php'）：
<?php
// protect page; make sure user can update opts
if ( !current_user_can('manage_options') ) {
wp_die (__("You don't have permission to access this page.") );
}
?>
<div class="wrap">
<?php screen_icon('options-general'); ?>
<h2>
<?php _e('Manage Page 1 Settings:'); ?>
</h2>
<p>Settings form here...</p>
<form name="p1_form1" id="p1_form1" method="post" action="">
<?php settings_fields('tp1_opts_groups'); ?>
<p>input fields, radio buttons, blah blah</p>
<p> </p>
</form>
</div>