Show attachments on specific page template

Hey, i want to share my solution to connect the attachment plugin only to a specific page template.
Thanks to: https://wordpress.stackexchange.com/questions/18122/toggle-admin-metabox-based-upon-chosen-page-template

Put his code in functions.php

add_action('admin_enqueue_scripts', 'my_admin_script');
function my_admin_script()
{
    wp_enqueue_script('my-admin', get_bloginfo('stylesheet_directory').'/js/my-admin.js', array('jquery'));
}

And make a new js-file like this.
In my example; the ‘template-contact.php’ (Contact template) is showing the attachment plugin.

(function($){
$(document).ready(function() {

    var $page_template = $('#page_template')
        ,$metabox = $('#attachments-my_attachments_temp'); // For example

    $page_template.change(function() {
        if ($(this).val() == 'template-contact.php') {
            $metabox.show();
        } else {
            $metabox.hide();
        }
    }).change();

});
})(jQuery);

Hope this helps for somebody too.

https://www.ads-software.com/extend/plugins/attachments/