Add Actions to underscore media-template items

[andrewgstreet]

Currently, there is no way to override the underscore templates used in media-template.php. It would great if each template item was preceded by a conditional such that:

   $result = do_action('tmpl-attachment'); //template name as action
   if (isset($result) && $result !== false) {
   ?>

   <script type="text/html" id="tmpl-attachment">
   <!-- Existing Template Here -->
   </script>

   <?php }

Then it would be easy to duplicate the existing template for modification

   function my_custom_media_attachment_template() {
    ?>
    <script type="text/html" id="tmpl-attachment">
        <!-- My Custom Template Goes Here -->
    </script>
    <?php
    return false;
   }
   add_action("tmpl-attachment", my_custom_media_attachment_template);

For my current project I'm having to do it, which of course means hacking the WP core. I'd be happy to share.

[andrewgstreet]

Suggested code modifcations

[andrewgstreet]

Add actions to playlist templates

[andrewgstreet]

Update wp-playlist-tracks to use a template rather than hard coding the html

[joemcgill]

Thanks for the ticket @andrewgstreet. I could see how it would be useful to modify the JS templates for embedded media items. I think the approach in #31281 might be a better holistic solution to this problem.

A sidenote: patches should be uploaded as SVN diffs. See ​this tutorial in the core handbook.

[georgestephanis]

Should we close this in favor of / as a duplicate of #31281 ?