Ticket #6196: pjw-wp-filter-manage-posts-2.5.php

<?php
/*
Plugin Name: PJW WP Filter Manage Posts
Plugin URI: http://blog.ftwr.co.uk/wordpress/
Description: Enables you to manage posts by author and other such goodies.
Author: Peter Westwood
Version: 0.11
Author URI: http://blog.ftwr.co.uk/
*/

/*  Copyright 2006  Peter Westwood  (email : peter.westwood@ftwr.co.uk)

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

function pjw_wp_filter_manage_posts_by_author() {
    global $wpdb;
    $user_result = $wpdb->get_results("SELECT DISTINCT post_author AS user_ID FROM $wpdb->posts WHERE post_type = 'post'");

    if ( count($user_result) > 1 ) { ?>

                <select name='author'>
                <option value=''><?php _e('All authors') ?></option>
                <?php
                foreach ($user_result as $user_row) {

                    if( isset($_GET['author']) && $user_row->user_ID == (int) $_GET['author'] )
                        $default = 'selected="selected"';
                    else
                        $default = null;

                    echo "<option $default value='$user_row->user_ID'>";
                    $user = get_userdata($user_row->user_ID);
                    echo $user->display_name;
                    echo "</option>\n";
                }
                ?>
                </select>
<?php
    } 
}

add_action('restrict_manage_posts', 'pjw_wp_filter_manage_posts_by_author');