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WordPress自定义插件开发中的纯JavaScript基本AJAX调用

javascript php ajax wordpress

WordPress自定义插件开发中的纯JavaScript基本AJAX调用,javascript,php,ajax,wordpress,Javascript,Php,Ajax,Wordpress,我正在开发一个自定义WordPress插件，其中我在主插件页面上有一些HTML表单，在后台有一些PHP函数，比如从数据库中获取信息等。为了详细解释，下面是代码 主插件文件： <?php /* Plugin Name: WP Testing Plugin Plugin URI: http://www.wordpress.org/WP-Testing-Plugin Description: A Detailed Description About This Plugin. Author: Mu

我正在开发一个自定义WordPress插件，其中我在主插件页面上有一些HTML表单，在后台有一些PHP函数，比如从数据库中获取信息等。为了详细解释，下面是代码

主插件文件：

<?php
/*
Plugin Name: WP Testing Plugin
Plugin URI: http://www.wordpress.org/WP-Testing-Plugin
Description: A Detailed Description About This Plugin.
Author: Muhammad Hassan
Version: 0.1
Author URI: http://www.wordpress.org
*/

/*____________WP Testing Plugin Admin/Script_____________*/
function wp_testingPlugin_admin() {
    echo '
        <form id="searchForm" onsubmit="return searchData(this)">
            <input name="WhatToSearch" type="text" />
            <input type="submit" value="Search"/>
            <input type="reset" value="Reset"/>
            <div id="showReturnData"></div>
        </form>
    ';

    echo '
        <script type="text/javascript">
            function searchData(incomingForm) {
                // Confirmation To Add A Data
                var answer = confirm("Are You Sure Want To Search?");
                if (answer){
                    // If User Click Ok Then Execute The Below Code     
                    var FD = new FormData(incomingForm); // Get FORM Element Object
                    FD.append("Function", "SearchFunction"); // Adding Extra Data In FORM Element Object To Hit Only This Function In Ajax Call File
                    var ajx = new XMLHttpRequest();
                    ajx.onreadystatechange = function () {
                        if (ajx.readyState == 4 && ajx.status == 200) {
                            document.getElementById("showReturnData").innerHTML = ajx.responseText;             
                        }
                    };
                    ajx.open("POST", "'.plugin_dir_url( __FILE__ ).'my_functions.php", true);
                    ajx.send(FD);
                    document.getElementById("showReturnData").innerHTML = "<div class="error">ERROR: AJAX Did Not Respond.</div>";
                }
                return false; // For Not To Reload Page
            }
        </script>
    ';
//if you want only logged in users to access this function use this hook
add_action('wp_ajax_ACTION_NAME', 'searchData');

//if you want none logged in users to access this function use this hook
add_action('wp_ajax_nopriv_ACTION_NAME', 'searchData');

}
/*__________________________________________________________________*/


/*____________WP Testing Plugin Option_____________*/
//Adding "WP Testing Plugin" Menu To WordPress -> Tools
function wp_testingPlugin() {
    //  add_management_page( $page_title, $menu_title, $capability, $menu_slug, $function);                  Menu Under Tools
    add_management_page("WP Testing Plugin By Hassan", "WP Testing Plugin", 'activate_plugins', "WP-Testing-Plugin", "wp_testingPlugin_admin");
}
add_action('admin_menu', 'wp_testingPlugin');
/*__________________________________________________________________*/
?>

<?php
/*
Plugin Name: WP Testing Plugin
Plugin URI: http://www.wordpress.org/WP-Testing-Plugin
Description: A Detailed Description About This Plugin.
Author: Muhammad Hassan
Version: 0.1
Author URI: http://www.wordpress.org
*/

// Calling All PHP File To Load
include('my_functions.php');

/*____________WP Testing Plugin Admin/Script_____________*/
function wp_testingPlugin_admin() {
    echo '
        <form id="searchForm">
            <input name="WhatToSearch" type="text" />
            <input type="submit" value="Search"/>
            <input type="reset" value="Reset"/>
            <div id="showReturnData"></div>
        </form>
    ';
}
/*__________________________________________________________________*/

/*____________WP Testing Plugin Option_____________*/
//Adding "WP Testing Plugin" Menu To WordPress -> Tools
function wp_testingPlugin() {
    //  add_management_page( $page_title, $menu_title, $capability, $menu_slug, $function);                  Menu Under Tools
    add_management_page("WP Testing Plugin By Hassan", "WP Testing Plugin", 'activate_plugins', "WP-Testing-Plugin", "wp_testingPlugin_admin");
}
add_action('admin_menu', 'wp_testingPlugin');
/*__________________________________________________________________*/
?>

工具
函数wp_testingPlugin（）{
//添加管理页面（$page\u title、$menu\u title、$capability、$menu\u slug、$function）；工具下的菜单
添加_管理_页面（“Hassan的WP测试插件”、“WP测试插件”、“激活_插件”、“WP测试插件”、“WP测试插件管理”）；
}
添加操作（“管理菜单”、“wp测试插件”）；
/*__________________________________________________________________*/
?>
这是my_functions.php文件

<?php
/****************************************************************************/
//Garb The Function Parameter
/****************************************************************************/
$Function = $_POST['Function'];


/****************************************************************************/
// Run Search Function
/****************************************************************************/
if ($Function == "SearchFunction"){

    if(!isset($_POST['WhatToSearch'])){
        $WhatToSearch = "Nothing";
    } else {
        $WhatToSearch = $_POST['WhatToSearch'];
    }

    echo "<div class='success'>SUCCESS: Function Is Working Perfectly And Getting Data ".$WhatToSearch.".</div>";
}

/****************************************************************************/
// Run Another Function
/****************************************************************************/
if ($Function == "AnotherFunction"){
    echo "<div class='success'>SUCCESS: Another Function Is Working Perfectly.</div>";
}

?>

最后，在获得帮助后，我在这里以简单的步骤分享我的问题的完整示例。这个答案也被认为是一个完整的基本Ajax插件示例。现在我个人建议将每个文件分开，以便更好、干净和舒适地编码

主插件文件：


<?php
/*
Plugin Name: WP Testing Plugin
Plugin URI: http://www.wordpress.org/WP-Testing-Plugin
Description: A Detailed Description About This Plugin.
Author: Muhammad Hassan
Version: 0.1
Author URI: http://www.wordpress.org
*/

/*____________WP Testing Plugin Admin/Script_____________*/
function wp_testingPlugin_admin() {
    echo '
        <form id="searchForm" onsubmit="return searchData(this)">
            <input name="WhatToSearch" type="text" />
            <input type="submit" value="Search"/>
            <input type="reset" value="Reset"/>
            <div id="showReturnData"></div>
        </form>
    ';

    echo '
        <script type="text/javascript">
            function searchData(incomingForm) {
                // Confirmation To Add A Data
                var answer = confirm("Are You Sure Want To Search?");
                if (answer){
                    // If User Click Ok Then Execute The Below Code     
                    var FD = new FormData(incomingForm); // Get FORM Element Object
                    FD.append("Function", "SearchFunction"); // Adding Extra Data In FORM Element Object To Hit Only This Function In Ajax Call File
                    var ajx = new XMLHttpRequest();
                    ajx.onreadystatechange = function () {
                        if (ajx.readyState == 4 && ajx.status == 200) {
                            document.getElementById("showReturnData").innerHTML = ajx.responseText;             
                        }
                    };
                    ajx.open("POST", "'.plugin_dir_url( __FILE__ ).'my_functions.php", true);
                    ajx.send(FD);
                    document.getElementById("showReturnData").innerHTML = "<div class="error">ERROR: AJAX Did Not Respond.</div>";
                }
                return false; // For Not To Reload Page
            }
        </script>
    ';
//if you want only logged in users to access this function use this hook
add_action('wp_ajax_ACTION_NAME', 'searchData');

//if you want none logged in users to access this function use this hook
add_action('wp_ajax_nopriv_ACTION_NAME', 'searchData');

}
/*__________________________________________________________________*/


/*____________WP Testing Plugin Option_____________*/
//Adding "WP Testing Plugin" Menu To WordPress -> Tools
function wp_testingPlugin() {
    //  add_management_page( $page_title, $menu_title, $capability, $menu_slug, $function);                  Menu Under Tools
    add_management_page("WP Testing Plugin By Hassan", "WP Testing Plugin", 'activate_plugins', "WP-Testing-Plugin", "wp_testingPlugin_admin");
}
add_action('admin_menu', 'wp_testingPlugin');
/*__________________________________________________________________*/
?>



<?php
/*
Plugin Name: WP Testing Plugin
Plugin URI: http://www.wordpress.org/WP-Testing-Plugin
Description: A Detailed Description About This Plugin.
Author: Muhammad Hassan
Version: 0.1
Author URI: http://www.wordpress.org
*/

// Calling All PHP File To Load
include('my_functions.php');

/*____________WP Testing Plugin Admin/Script_____________*/
function wp_testingPlugin_admin() {
    echo '
        <form id="searchForm">
            <input name="WhatToSearch" type="text" />
            <input type="submit" value="Search"/>
            <input type="reset" value="Reset"/>
            <div id="showReturnData"></div>
        </form>
    ';
}
/*__________________________________________________________________*/

/*____________WP Testing Plugin Option_____________*/
//Adding "WP Testing Plugin" Menu To WordPress -> Tools
function wp_testingPlugin() {
    //  add_management_page( $page_title, $menu_title, $capability, $menu_slug, $function);                  Menu Under Tools
    add_management_page("WP Testing Plugin By Hassan", "WP Testing Plugin", 'activate_plugins', "WP-Testing-Plugin", "wp_testingPlugin_admin");
}
add_action('admin_menu', 'wp_testingPlugin');
/*__________________________________________________________________*/
?>






my_functions.php


<?php
add_action( 'admin_enqueue_scripts', 'my_enqueue' );
function my_enqueue() {
      wp_enqueue_script( 'ajax-script', plugin_dir_url( __FILE__ ).'my_javascript.js', array('jquery') );
      wp_localize_script( 'ajax-script', 'my_ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) );
}
/****************************************************************************/
// Run Search Function
/****************************************************************************/
/* Register This Function When This File Is Loaded To Call By WordPress AJAX */
add_action('wp_ajax_nopriv_SearchFunction', 'ajaxSearchFunction'); // For Web Visitors
add_action('wp_ajax_SearchFunction', 'ajaxSearchFunction'); // For Admin User
function ajaxSearchFunction(){
    if($_POST['WhatToSearch'] == ""){
        $WhatToSearch = "Nothing";
    } else {
        $WhatToSearch = $_POST['WhatToSearch'];
    }
    echo "<div class='success'>SUCCESS: Function Is Working Perfectly And Getting Data ".$WhatToSearch.".</div>";
}
?>



这里的主要问题是，您首先要“绕过”WordPress。这不是在WP中正确执行AJAX的方式。首先，请求不应该直接发送到插件脚本文件。我建议你从阅读如何真正做到这一点开始-@CBroe我读了很多文章，但到处都是JQuery。你能至少确认一下在纯JavaScript中这是可能的吗？我也尝试过并更新了这个问题。WordPress本身已经使用了jQuery，那么为什么还要做其他事情呢？如果您想在这里使用WordPress，您可能也可以在普通JavaScript中这样做。但你真的不应该。特别是如果这个插件应该在某个时候提供给其他人，也许。谢谢你的支持。请投票帮助其他新手回答这类问题。您应该真正使用
nonce
进行验证，以便ajax请求实际上来自您认为它来自的地方。您可能还需要查看
wp\u send\u json\u success（）
以及用于响应调用者的相关函数。上面提到的另一件事是，假设设置了一个值，例如
if（$\u POST['WhatToSearch']==“”）
，如果请求中未设置
WhatToSearch
，则会抛出警告。