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<?php
/**
* @version $Id$
* @package Koowa_Controller
* @subpackage Command
* @copyright Copyright (C) 2007 - 2012 Johan Janssens. All rights reserved.
* @license GNU GPLv3 <http://www.gnu.org/licenses/gpl.html>
* @link http://www.nooku.org
*/
/**
* Controller Discoverable Command Class
*
* @author Johan Janssens <johan@nooku.org>
* @package Koowa_Controller
* @subpackage Behavior
*/
class KControllerBehaviorDiscoverable extends KControllerBehaviorAbstract
{
/**
* Get a list of allowed actions
*
* @return string The allowed actions; e.g., `GET, POST [add, edit, cancel, save], PUT, DELETE`
*/
protected function _actionOptions(KCommandContext $context)
{
$methods = array();
//Remove GET actions
$actions = array_diff($this->getActions(), array('browse', 'read', 'display'));
//Authorize the action
foreach($actions as $key => $action)
{
//Find the mapped action if one exists
if (isset( $this->_action_map[$action] )) {
$action = $this->_action_map[$action];
}
//Check if the action can be executed
if($this->getBehavior('executable')->execute('before.'.$action, $context) === false) {
unset($actions[$key]);
}
}
//Sort the action alphabetically.
sort($actions);
//Retrieve HTTP methods
foreach(array('get', 'put', 'delete', 'post', 'options') as $method)
{
if(in_array($method, $actions)) {
$methods[strtoupper($method)] = $method;
}
}
//Retrieve POST actions
if(in_array('post', $methods))
{
$actions = array_diff($actions, array('get', 'put', 'delete', 'post', 'options'));
$methods['POST'] = array_diff($actions, $methods);
}
//Render to string
$result = implode(', ', array_keys($methods));
foreach($methods as $method => $actions)
{
if(is_array($actions) && !empty($actions)) {
$result = str_replace($method, $method.' ['.implode(', ', $actions).']', $result);
}
}
$context->headers = array('Allow' => $result);
}
}
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