Media Taxonomy Support

media-taxonomy.php

<?php

/** 
 * Registers Taxonomies
 * 
 * @since rtPanelChild 1.0
 */
function rtp_create_taxonomies() {
    
    /* Post Custom Taxonomy */
    register_taxonomy( 'media-categories', 'attachment', array(
        'hierarchical' => true,
        'update_count_callback' => '',
        'rewrite' => true,
        'query_var' => 'media-categories',
        'public' => true,
        'show_ui' => null,
        'show_tagcloud' => null,
        '_builtin' => false,
        'labels' => array(
        'name' => _x( 'Media Categories', 'taxonomy general name', 'rtPanel' ),
        'singular_name' => _x( 'Media Category', 'taxonomy singular name', 'rtPanel' ),
        'search_items' => __( 'Search Media Categories', 'rtPanel' ),
        'all_items' => __( 'All Media Categories', 'rtPanel' ),
        'parent_item' => array( null, __( 'Parent Media Category', 'rtPanel' ) ),
        'parent_item_colon' => array( null, __( 'Parent Media Category:', 'rtPanel' ) ),
        'edit_item' => __( 'Edit Media Category', 'rtPanel' ),
        'view_item' => __( 'View Media Category', 'rtPanel' ),
        'update_item' => __( 'Update Media Category', 'rtPanel' ),
        'add_new_item' => __( 'Add New Media Category', 'rtPanel' ),
        'new_item_name' => __( 'New Media Category Name', 'rtPanel' ) ),
        'capabilities' => array(),
        'show_in_nav_menus' => null,
        'label' => __( 'Media Categories', 'rtPanel' ),
        'sort' => true,
        'args' => array( 'orderby' => 'term_order' ) )
    );
}
add_action( 'init', 'rtp_create_taxonomies' );

/* Add Taxonomy Column In Media */

/* Add a new column */
function rtp_add_topic_column($posts_columns) {
    $posts_columns['media_cat'] = _x('Media Category', 'column name', 'rtPanel');
    return $posts_columns;
}
add_filter('manage_media_columns', 'rtp_add_topic_column');

/* Register the column as sortable */
function rtp_topic_column_register_sortable( $columns ) {
    $columns['media_cat'] = 'media_cat';
    return $columns;
}
add_filter( 'manage_upload_sortable_columns', 'rtp_topic_column_register_sortable' );

/* Manage media custom column */
function rtp_manage_attachment_topic_column($column_name, $id) {
    switch( $column_name ) {
    case 'media_cat':
        $tags = wp_get_object_terms( $id, 'media-categories', '' );

        if ( !empty( $tags ) ) {
            $media_category_list_items = '';
            
            foreach ( $tags as $c ) {
                if ( strlen( $media_category_list_items ) ) $media_category_list_items .= ', ';
                
                $media_category_list_items .= '<a href="'. rtp_get_mediacat_admin_library_link( $c->term_id). '">'.  $c->name. '</a>';
            }
            
            echo $media_category_list_items;
            
        } else {
            _e('Uncategorized', 'rtPanel');
        }
        
        break;
    default:
        break;
    }
}
add_action('manage_media_custom_column', 'rtp_manage_attachment_topic_column', 10, 2);

/* Get mediacat admin library link */
function rtp_get_mediacat_admin_library_link( $mediacat_id ) {

    $base_url = "upload.php?";

    $media_cat = &get_term( $mediacat_id, 'media-categories' );
    if ( is_wp_error( $media_cat ) )
        return;
    	
    $edit_href = $base_url . 'media-categories' ."=".$media_cat->slug;

    return $edit_href;
}