[wp-trac] [WordPress Trac] #36418: Custom MIME type icons lost in WP Media List view

[WordPress Trac]

#36418: Custom MIME type icons lost in WP Media List view
--------------------------+------------------------------
 Reporter:  jhorowitz     |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Media         |     Version:
 Severity:  normal        |  Resolution:
 Keywords:  dev-feedback  |     Focuses:  administration
--------------------------+------------------------------

Comment (by hupe13):

 Solved: Based on the example code from @liquidRock, I'm using the code in
 my plugin that's similar to the following:

 {{{#!php
 <?php
 add_filter( 'wp_mime_type_icon', function( $icon, $mime, $post_id ) {
     if( 'application/gpx+xml' === $mime && $post_id > 0 ) {
         $icon = 'https://my-domain.tld/path/to/my-icons-dir/gpx-icon.svg';
     }
     return $icon;
 }, 10, 3 );
 }}}


 {{{#!php
 <?php
 add_filter( 'icon_dir',
 function ( $path ) {
     return '/path/to/my-icons-dir/';
 }, 10, 1 );
 }}}

 And you must copy the `./wp-includes/images/media/default.svg` to
 `/path/to/my-icons-dir/`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/36418#comment:6>
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