Cách tạo action, nonce,check_ajax_referer trên đường dẫn (ok)

C:\xampp\htdocs\test\wp-content\plugins\plugin-name\admin\partials\form_ct.php

<form method="post" action="<?php echo add_query_arg(array('action'=>$this->plugin_name . '_ajax_themes_save'),  admin_url('admin-ajax.php')) ?>">
    <input type="hidden" value="<?php echo wp_create_nonce($this->plugin_name . '_them_ajax'); ?>" name="<?php echo $this->plugin_name ?>_nonce"/>
    <?php $form = new WPF_Form($this->plugin_name,$this->version,$cpt_id); 
        $form->form();
    ?>
    <p class="submit">
        <button id="<?php echo $this->plugin_name ?>_submit" class="button button-primary"><?php _e('Save', 'wpf') ?></button>
    </p>
    <div id="<?php echo $this->plugin_name ?>_success_text" class="updated"></div>
	<div class="<?php echo $this->plugin_name ?>_wait"></div>
</form>

C:\xampp\htdocs\test\wp-content\plugins\themify-wc-product-filter\admin\class-wpf-admin.php

public function save_themplate(){
        check_ajax_referer($this->plugin_name .'_them_ajax', $this->plugin_name .'_nonce', true);
        $form = new WPF_Form($this->plugin_name,$this->version);
        $result = $form->save_themplate($_POST);
        if($result){
           echo  wp_json_encode($result);
        }
        wp_die();
    }