Sort Downloads by Last Modified

gistfile1.php

<?php
/*
Plugin Name: Sort Downloads by Last Modified
Plugin URI: #
Description: Adds sortable Modified Date column to Downloads
Version: 1.0
Author: Sean Davis
Author URI: http://sdavismedia.com
*/


/**
 * Register Modified Date Column for Downloads
 */
function sdm_modified_column_register( $columns ) {
	$columns['modified'] = 'Modified Date';
	return $columns;
}
add_filter( 'manage_edit-download_columns', 'sdm_modified_column_register' );


/**
 * Display the modified date of each Download
 */
function sdm_modified_column_display( $column_name, $post_id ) {
	global $post;
	
	if ( $column_name !== 'modified' ) {
		return;
	}
	
	$modified = the_modified_date();
	echo $modified;
}
add_action( 'manage_download_posts_custom_column', 'sdm_modified_column_display', 10, 2 );


/**
 * Register the column as sortable
 */
function sdm_modified_column_register_sortable( $columns ) {
	$columns['modified'] = 'modified';
	return $columns;
}
add_filter( 'manage_edit-download_sortable_columns', 'sdm_modified_column_register_sortable' );