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<?php
/**
 * Media Library - View logged in author uploads only
 *
 * @package      GUM WP Child Theme Functions
 * @author       Jayson T. Cote <askjayson@gmail.com>
 * @copyright    Copyright (c) 2013, Jayson T. Cote
 * @license      http://opensource.org/licenses/gpl-2.0.php GNU Public License
 *
 */

add_filter('parse_query', 'gum_author_only_media_uploads' );
function gum_author_only_media_uploads( $wp_query ) {
    if ( strpos( $_SERVER[ 'REQUEST_URI' ], '/wp-admin/upload.php' ) !== false ) {
        if ( !current_user_can( 'level_5' ) ) {
            global $current_user;
            $wp_query->set( 'author', $current_user->id );
        }
    }
}