Ticket #2301: restrict_pages.php

<?php
/*
Plugin Name: Restrict Page Editing
Description: Restricts users from editing Pages unless they have edit_others_pages capability 
Version: 1.0
Author: Owen Winkler
Author URI: http://www.asymptomatic.net
Plugin URI: http://redalt.com/wiki/Restrict+Page+Editing
*/

class Restrict_Pages
{
        function Restrict_Pages()
        {
                add_filter('user_has_cap', array(&$this, 'user_has_cap'), 10, 3);
                add_filter('capabilities_list', array(&$this, 'capabilities_list'));
        }
        
        function user_has_cap()
        {
                global $post, $current_user;
                $vargs = func_get_args();
                list($allcaps, $reqcaps, $args) = $vargs;

                if($allcaps['edit_others_pages'] == 1) return $allcaps;         
                
                if(($reqcaps[0] == 'edit_pages') && (is_numeric($args[2]))){
                        $post = get_post($args[2]);
                        if($post->post_author != $current_user->id) {
                                $allcaps = array();                             
                        }
                }
                return $allcaps;
        }
        
        function capabilities_list($caplist)
        {
                $caplist[] = 'edit_others_pages';
                return $caplist;
        }
}

$restrict_pages = new Restrict_Pages();

?>