I am creating in personal plugin where I recover data from a personal table.
Con add_action(‘the_content’, ‘my_plugin_content’); posso far vedere il contenuto in una pagina.
I would like to save the content in wp_posts with add_filter (‘save_post’, ‘my_plugin_content’), but the content is empty.

function my_plugin_content($content){
     $current_page = $wp->request;
     include_once(plugin_dir_path( __FILE__ ).'views/view.php');
     $obj = new Loader;
     $content.=$obj->controller($current_page);
     $my_post = array(); 
     $my_post['ID'] = $post->ID;
     $my_post['post_content']=$cont;
}

in another file I run the data recovery query that I refer to the file loader that loads the views

File loader

public function view($view, array $dati){
      require(DIR_PLUGIN.'views/'.$view.'_v.php');
}

File view

    <?php foreach($dati as $p){  echo '<p><strong>'.$p->NAME.'</strong></p>; }?>