我正在开发一个简单的插件，它显示了一个HTML表单，用户可以在其中输入一个用于查询外部API的关键字。我目前已经设置了表单和相关的jQuery，但是当传递到插件的PHP文件时，我得到的响应仅仅是0。此时，我只想得到除0以外的任何响应（请参见echo "Whyyyy" 零件）。我一直在浏览互联网，觉得自己已经尝试了所有建议，这让我觉得自己在哪里犯了错误。

任何帮助都将不胜感激。

这是插件的PHP：

defined(\'ABSPATH\') or die(\'Ah ah ah. You didn\\\'t say the magic word.\');

class News_search {

    // Load scripts upon class initiation
    public function __construct() {
        add_action(\'wp_enqueue_scripts\', array($this, \'enqueue_scripts\'));
        add_action(\'wp_ajax_get_news_callback\', \'get_news_callback\');
        add_action(\'wp_ajax_nopriv_get_news_callback\', \'get_news_callback\');
        add_shortcode(\'wp_news_search\', array($this, \'wp_news_search_form\'));
    }

    function enqueue_scripts() {
        // Enqueue CSS
        wp_enqueue_style(\'wp-news-search\', plugins_url(\'/css/wp-news-search.css\', __FILE__));
        // Enqueue and localize JS
        wp_enqueue_script(\'ajax-script\', plugins_url(\'/js/wp-news-search_query.js\', __FILE__), array(\'jquery\'), null, true);
        wp_localize_script(\'ajax-script\', \'ajax_object\',
            array(\'ajax_url\' => admin_url(\'admin-ajax.php\'),
                \'security\' => wp_create_nonce(\'my-string-shh\'),
            ));
    }

    // Handle AJAX request
    function get_news_callback() {
        check_ajax_referer(\'my-special-string\', \'security\');
        $keyword = isset($_POST[\'news-keyword\']) ? $_POST[\'news-keyword\'] : null;
        echo "Whyyyy";
        die();

    }

    public function wp_news_search_form() {
        $content .= \'<form id="wp-news-search__form">
                        <label>
                            <input type="text" name="news-keyword" placeholder="\' . __(\'Enter keywords\') . \'" id="news-keyword" required>
                        </label>
                        <button id="wp-news-search__submit">\' .
                         __(\'Search for news\', \'wp-news-search\') .
                       \'</button>
                    </form>\';
        return $content;
    }

}

new News_search();

(function ($) {

    $(document).ready(function () {
        $(\'#wp-news-search__form\').submit(function (event) {
            event.preventDefault();

            // const keyword = $(\'#query-input\').val();
            const values = $(this).serialize();


            if (values) {
                // send stuff to php
                console.log(values);
                const data = {
                    action: \'get_news_callback\',
                    status: \'enabled\',
                    security: ajax_object.security,
                    form_data: values
                }

                $.post(ajax_object.ajax_url, data, function(response) {
                    if (response) {
                        console.log(`Response is: ${response}`);
                    }
                })
                    .fail(() => { console.error(\'error\'); })
                    .always(() => { console.log(\'form submitted\') });
            }

        });


    });

})(jQuery);