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<?php

/**

 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)

 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)

 *

 * Licensed under The MIT License

 * For full copyright and license information, please see the LICENSE.txt

 * Redistributions of files must retain the above copyright notice.

 *

 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)

 * @link          http://cakephp.org CakePHP(tm) Project

 * @package       Cake.Controller

 * @since         CakePHP(tm) v 0.2.9

 * @license       http://www.opensource.org/licenses/mit-license.php MIT License

 */

App::uses('CakeResponse', 'Network');

App::uses('ClassRegistry', 'Utility');

App::uses('ComponentCollection', 'Controller');

App::uses('View', 'View');

App::uses('CakeEvent', 'Event');

App::uses('CakeEventListener', 'Event');

App::uses('CakeEventManager', 'Event');

/**

 * Application controller class for organization of business logic.

 * Provides basic functionality, such as rendering views inside layouts,

 * automatic model availability, redirection, callbacks, and more.

 *

 * Controllers should provide a number of 'action' methods. These are public methods on the controller

 * that are not prefixed with a '_' and not part of Controller. Each action serves as an endpoint for

 * performing a specific action on a resource or collection of resources. For example: adding or editing a new

 * object, or listing a set of objects.

 *

 * You can access request parameters, using `$this->request`. The request object contains all the POST, GET and FILES

 * that were part of the request.

 *

 * After performing the required actions, controllers are responsible for creating a response. This usually

 * takes the form of a generated View, or possibly a redirection to another controller action. In either case

 * `$this->response` allows you to manipulate all aspects of the response.

 *

 * Controllers are created by Dispatcher based on request parameters and routing. By default controllers and actions

 * use conventional names. For example `/posts/index` maps to `PostsController::index()`. You can re-map URLs

 * using Router::connect().

 *

 * @package       Cake.Controller

 * @property      AclComponent $Acl

 * @property      AuthComponent $Auth

 * @property      CookieComponent $Cookie

 * @property      EmailComponent $Email

 * @property      PaginatorComponent $Paginator

 * @property      RequestHandlerComponent $RequestHandler

 * @property      SecurityComponent $Security

 * @property      SessionComponent $Session

 * @link          http://book.cakephp.org/2.0/en/controllers.html

 */

class Controller extends Object implements CakeEventListener {

/**

 * The name of this controller. Controller names are plural, named after the model they manipulate.

 *

 * @var string

 * @link http://book.cakephp.org/2.0/en/controllers.html#controller-attributes

 */

	public $name = null;

/**

 * An array containing the class names of models this controller uses.

 *

 * Example: `public $uses = array('Product', 'Post', 'Comment');`

 *

 * Can be set to several values to express different options:

 *

 * - `true` Use the default inflected model name.

 * - `array()` Use only models defined in the parent class.

 * - `false` Use no models at all, do not merge with parent class either.

 * - `array('Post', 'Comment')` Use only the Post and Comment models. Models

 *   Will also be merged with the parent class.

 *

 * The default value is `true`.

 *

 * @var mixed

 * @link http://book.cakephp.org/2.0/en/controllers.html#components-helpers-and-uses

 */

	public $uses = true;

/**

 * An array containing the names of helpers this controller uses. The array elements should

 * not contain the "Helper" part of the class name.

 *

 * Example: `public $helpers = array('Html', 'Js', 'Time', 'Ajax');`

 *

 * @var mixed

 * @link http://book.cakephp.org/2.0/en/controllers.html#components-helpers-and-uses

 */

	public $helpers = array();

/**

 * An instance of a CakeRequest object that contains information about the current request.

 * This object contains all the information about a request and several methods for reading

 * additional information about the request.

 *

 * @var CakeRequest

 * @link http://book.cakephp.org/2.0/en/controllers/request-response.html#cakerequest

 */

	public $request;

/**

 * An instance of a CakeResponse object that contains information about the impending response

 *

 * @var CakeResponse

 * @link http://book.cakephp.org/2.0/en/controllers/request-response.html#cakeresponse

 */

	public $response;

/**

 * The class name to use for creating the response object.

 *

 * @var string

 */

	protected $_responseClass = 'CakeResponse';

/**

 * The name of the views subfolder containing views for this controller.

 *

 * @var string

 */

	public $viewPath = null;

/**

 * The name of the layouts subfolder containing layouts for this controller.

 *

 * @var string

 */

	public $layoutPath = null;

/**

 * Contains variables to be handed to the view.

 *

 * @var array

 */

	public $viewVars = array();

/**

 * The name of the view file to render. The name specified

 * is the filename in /app/View/<SubFolder> without the .ctp extension.

 *

 * @var string

 */

	public $view = null;

/**

 * The name of the layout file to render the view inside of. The name specified

 * is the filename of the layout in /app/View/Layouts without the .ctp

 * extension.

 *

 * @var string

 */

	public $layout = 'default';

/**

 * Set to true to automatically render the view

 * after action logic.

 *

 * @var bool

 */

	public $autoRender = true;

/**

 * Set to true to automatically render the layout around views.

 *

 * @var bool

 */

	public $autoLayout = true;

/**

 * Instance of ComponentCollection used to handle callbacks.

 *

 * @var ComponentCollection

 */

	public $Components = null;

/**

 * Array containing the names of components this controller uses. Component names

 * should not contain the "Component" portion of the class name.

 *

 * Example: `public $components = array('Session', 'RequestHandler', 'Acl');`

 *

 * @var array

 * @link http://book.cakephp.org/2.0/en/controllers/components.html

 */

	public $components = array('Session');

/**

 * The name of the View class this controller sends output to.

 *

 * @var string

 */

	public $viewClass = 'View';

/**

 * Instance of the View created during rendering. Won't be set until after

 * Controller::render() is called.

 *

 * @var View

 */

	public $View;

/**

 * File extension for view templates. Defaults to CakePHP's conventional ".ctp".

 *

 * @var string

 */

	public $ext = '.ctp';

/**

 * Automatically set to the name of a plugin.

 *

 * @var string

 */

	public $plugin = null;

/**

 * Used to define methods a controller that will be cached. To cache a

 * single action, the value is set to an array containing keys that match

 * action names and values that denote cache expiration times (in seconds).

 *

 * Example:

 *

 * ```

 * public $cacheAction = array(

 *		'view/23/' => 21600,

 *		'recalled/' => 86400

 *	);

 * ```

 *

 * $cacheAction can also be set to a strtotime() compatible string. This

 * marks all the actions in the controller for view caching.

 *

 * @var mixed

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/cache.html#additional-configuration-options

 */

	public $cacheAction = false;

/**

 * Holds all params passed and named.

 *

 * @var mixed

 */

	public $passedArgs = array();

/**

 * Triggers Scaffolding

 *

 * @var mixed

 * @link http://book.cakephp.org/2.0/en/controllers/scaffolding.html

 */

	public $scaffold = false;

/**

 * Holds current methods of the controller. This is a list of all the methods reachable

 * via URL. Modifying this array will allow you to change which methods can be reached.

 *

 * @var array

 */

	public $methods = array();

/**

 * This controller's primary model class name, the Inflector::singularize()'ed version of

 * the controller's $name property.

 *

 * Example: For a controller named 'Comments', the modelClass would be 'Comment'

 *

 * @var string

 */

	public $modelClass = null;

/**

 * This controller's model key name, an underscored version of the controller's $modelClass property.

 *

 * Example: For a controller named 'ArticleComments', the modelKey would be 'article_comment'

 *

 * @var string

 */

	public $modelKey = null;

/**

 * Holds any validation errors produced by the last call of the validateErrors() method.

 *

 * @var array

 */

	public $validationErrors = null;

/**

 * The class name of the parent class you wish to merge with.

 * Typically this is AppController, but you may wish to merge vars with a different

 * parent class.

 *

 * @var string

 */

	protected $_mergeParent = 'AppController';

/**

 * Instance of the CakeEventManager this controller is using

 * to dispatch inner events.

 *

 * @var CakeEventManager

 */

	protected $_eventManager = null;

/**

 * Constructor.

 *

 * @param CakeRequest $request Request object for this controller. Can be null for testing,

 *  but expect that features that use the request parameters will not work.

 * @param CakeResponse $response Response object for this controller.

 */

	public function __construct($request = null, $response = null) {

		if ($this->name === null) {

			$this->name = substr(get_class($this), 0, -10);

		}

		if (!$this->viewPath) {

			$this->viewPath = $this->name;

		}

		$this->modelClass = Inflector::singularize($this->name);

		$this->modelKey = Inflector::underscore($this->modelClass);

		$this->Components = new ComponentCollection();

		$childMethods = get_class_methods($this);

		$parentMethods = get_class_methods('Controller');

		$this->methods = array_diff($childMethods, $parentMethods);

		if ($request instanceof CakeRequest) {

			$this->setRequest($request);

		}

		if ($response instanceof CakeResponse) {

			$this->response = $response;

		}

		parent::__construct();

	}

/**

 * Provides backwards compatibility to avoid problems with empty and isset to alias properties.

 * Lazy loads models using the loadModel() method if declared in $uses

 *

 * @param string $name Property name to check.

 * @return bool

 */

	public function __isset($name) {

		switch ($name) {

			case 'base':

			case 'here':

			case 'webroot':

			case 'data':

			case 'action':

			case 'params':

				return true;

		}

		if (is_array($this->uses)) {

			foreach ($this->uses as $modelClass) {

				list($plugin, $class) = pluginSplit($modelClass, true);

				if ($name === $class) {

					return $this->loadModel($modelClass);

				}

			}

		}

		if ($name === $this->modelClass) {

			list($plugin, $class) = pluginSplit($name, true);

			if (!$plugin) {

				$plugin = $this->plugin ? $this->plugin . '.' : null;

			}

			return $this->loadModel($plugin . $this->modelClass);

		}

		return false;

	}

/**

 * Provides backwards compatibility access to the request object properties.

 * Also provides the params alias.

 *

 * @param string $name The name of the requested value

 * @return mixed The requested value for valid variables/aliases else null

 */

	public function __get($name) {

		switch ($name) {

			case 'base':

			case 'here':

			case 'webroot':

			case 'data':

				return $this->request->{$name};

			case 'action':

				return isset($this->request->params['action']) ? $this->request->params['action'] : '';

			case 'params':

				return $this->request;

			case 'paginate':

				return $this->Components->load('Paginator')->settings;

		}

		if (isset($this->{$name})) {

			return $this->{$name};

		}

		return null;

	}

/**

 * Provides backwards compatibility access for setting values to the request object.

 *

 * @param string $name Property name to set.

 * @param mixed $value Value to set.

 * @return void

 */

	public function __set($name, $value) {

		switch ($name) {

			case 'base':

			case 'here':

			case 'webroot':

			case 'data':

				$this->request->{$name} = $value;

				return;

			case 'action':

				$this->request->params['action'] = $value;

				return;

			case 'params':

				$this->request->params = $value;

				return;

			case 'paginate':

				$this->Components->load('Paginator')->settings = $value;

				return;

		}

		$this->{$name} = $value;

	}

/**

 * Sets the request objects and configures a number of controller properties

 * based on the contents of the request. The properties that get set are

 *

 * - $this->request - To the $request parameter

 * - $this->plugin - To the $request->params['plugin']

 * - $this->view - To the $request->params['action']

 * - $this->autoLayout - To the false if $request->params['bare']; is set.

 * - $this->autoRender - To false if $request->params['return'] == 1

 * - $this->passedArgs - The the combined results of params['named'] and params['pass]

 *

 * @param CakeRequest $request Request instance.

 * @return void

 */

	public function setRequest(CakeRequest $request) {

		$this->request = $request;

		$this->plugin = isset($request->params['plugin']) ? Inflector::camelize($request->params['plugin']) : null;

		$this->view = isset($request->params['action']) ? $request->params['action'] : null;

		if (isset($request->params['pass']) && isset($request->params['named'])) {

			$this->passedArgs = array_merge($request->params['pass'], $request->params['named']);

		}

		if (!empty($request->params['return']) && $request->params['return'] == 1) {

			$this->autoRender = false;

		}

		if (!empty($request->params['bare'])) {

			$this->autoLayout = false;

		}

	}

/**

 * Dispatches the controller action. Checks that the action

 * exists and isn't private.

 *

 * @param CakeRequest $request Request instance.

 * @return mixed The resulting response.

 * @throws PrivateActionException When actions are not public or prefixed by _

 * @throws MissingActionException When actions are not defined and scaffolding is

 *    not enabled.

 */

	public function invokeAction(CakeRequest $request) {

		try {

			$method = new ReflectionMethod($this, $request->params['action']);

			if ($this->_isPrivateAction($method, $request)) {

				throw new PrivateActionException(array(

					'controller' => $this->name . "Controller",

					'action' => $request->params['action']

				));

			}

			return $method->invokeArgs($this, $request->params['pass']);

		} catch (ReflectionException $e) {

			if ($this->scaffold !== false) {

				return $this->_getScaffold($request);

			}

			throw new MissingActionException(array(

				'controller' => $this->name . "Controller",

				'action' => $request->params['action']

			));

		}

	}

/**

 * Check if the request's action is marked as private, with an underscore,

 * or if the request is attempting to directly accessing a prefixed action.

 *

 * @param ReflectionMethod $method The method to be invoked.

 * @param CakeRequest $request The request to check.

 * @return bool

 */

	protected function _isPrivateAction(ReflectionMethod $method, CakeRequest $request) {

		$privateAction = (

			$method->name[0] === '_' ||

			!$method->isPublic() ||

			!in_array($method->name, $this->methods)

		);

		$prefixes = array_map('strtolower', Router::prefixes());

		if (!$privateAction && !empty($prefixes)) {

			if (empty($request->params['prefix']) && strpos($request->params['action'], '_') > 0) {

				list($prefix) = explode('_', $request->params['action']);

				$privateAction = in_array(strtolower($prefix), $prefixes);

			}

		}

		return $privateAction;

	}

/**

 * Returns a scaffold object to use for dynamically scaffolded controllers.

 *

 * @param CakeRequest $request Request instance.

 * @return Scaffold

 */

	protected function _getScaffold(CakeRequest $request) {

		return new Scaffold($this, $request);

	}

/**

 * Merge components, helpers, and uses vars from

 * Controller::$_mergeParent and PluginAppController.

 *

 * @return void

 */

	protected function _mergeControllerVars() {

		$pluginController = $pluginDot = null;

		$mergeParent = is_subclass_of($this, $this->_mergeParent);

		$pluginVars = array();

		$appVars = array();

		if (!empty($this->plugin)) {

			$pluginController = $this->plugin . 'AppController';

			if (!is_subclass_of($this, $pluginController)) {

				$pluginController = null;

			}

			$pluginDot = $this->plugin . '.';

		}

		if ($pluginController) {

			$merge = array('components', 'helpers');

			$this->_mergeVars($merge, $pluginController);

		}

		if ($mergeParent || !empty($pluginController)) {

			$appVars = get_class_vars($this->_mergeParent);

			$merge = array('components', 'helpers');

			$this->_mergeVars($merge, $this->_mergeParent, true);

		}

		if ($this->uses === null) {

			$this->uses = false;

		}

		if ($this->uses === true) {

			$this->uses = array($pluginDot . $this->modelClass);

		}

		if (isset($appVars['uses']) && $appVars['uses'] === $this->uses) {

			array_unshift($this->uses, $pluginDot . $this->modelClass);

		}

		if ($pluginController) {

			$pluginVars = get_class_vars($pluginController);

		}

		if ($this->uses !== false) {

			$this->_mergeUses($pluginVars);

			$this->_mergeUses($appVars);

		} else {

			$this->uses = array();

			$this->modelClass = '';

		}

	}

/**

 * Helper method for merging the $uses property together.

 *

 * Merges the elements not already in $this->uses into

 * $this->uses.

 *

 * @param array $merge The data to merge in.

 * @return void

 */

	protected function _mergeUses($merge) {

		if (!isset($merge['uses'])) {

			return;

		}

		if ($merge['uses'] === true) {

			return;

		}

		$this->uses = array_merge(

			$this->uses,

			array_diff($merge['uses'], $this->uses)

		);

	}

/**

 * Returns a list of all events that will fire in the controller during its lifecycle.

 * You can override this function to add your own listener callbacks

 *

 * @return array

 */

	public function implementedEvents() {

		return array(

			'Controller.initialize' => 'beforeFilter',

			'Controller.beforeRender' => 'beforeRender',

			'Controller.beforeRedirect' => array('callable' => 'beforeRedirect', 'passParams' => true),

			'Controller.shutdown' => 'afterFilter'

		);

	}

/**

 * Loads Model classes based on the uses property

 * see Controller::loadModel(); for more info.

 * Loads Components and prepares them for initialization.

 *

 * @return mixed true if models found and instance created.

 * @see Controller::loadModel()

 * @link http://book.cakephp.org/2.0/en/controllers.html#Controller::constructClasses

 * @throws MissingModelException

 */

	public function constructClasses() {

		$this->_mergeControllerVars();

		if ($this->uses) {

			$this->uses = (array)$this->uses;

			list(, $this->modelClass) = pluginSplit(reset($this->uses));

		}

		$this->Components->init($this);

		return true;

	}

/**

 * Returns the CakeEventManager manager instance that is handling any callbacks.

 * You can use this instance to register any new listeners or callbacks to the

 * controller events, or create your own events and trigger them at will.

 *

 * @return CakeEventManager

 */

	public function getEventManager() {

		if (empty($this->_eventManager)) {

			$this->_eventManager = new CakeEventManager();

			$this->_eventManager->attach($this->Components);

			$this->_eventManager->attach($this);

		}

		return $this->_eventManager;

	}

/**

 * Perform the startup process for this controller.

 * Fire the Components and Controller callbacks in the correct order.

 *

 * - Initializes components, which fires their `initialize` callback

 * - Calls the controller `beforeFilter`.

 * - triggers Component `startup` methods.

 *

 * @return void

 * @triggers Controller.initialize $this

 * @triggers Controller.startup $this

 */

	public function startupProcess() {

		$this->getEventManager()->dispatch(new CakeEvent('Controller.initialize', $this));

		$this->getEventManager()->dispatch(new CakeEvent('Controller.startup', $this));

	}

/**

 * Perform the various shutdown processes for this controller.

 * Fire the Components and Controller callbacks in the correct order.

 *

 * - triggers the component `shutdown` callback.

 * - calls the Controller's `afterFilter` method.

 *

 * @return void

 * @triggers Controller.shutdown $this

 */

	public function shutdownProcess() {

		$this->getEventManager()->dispatch(new CakeEvent('Controller.shutdown', $this));

	}

/**

 * Queries & sets valid HTTP response codes & messages.

 *

 * @param int|array $code If $code is an integer, then the corresponding code/message is

 *        returned if it exists, null if it does not exist. If $code is an array,

 *        then the 'code' and 'message' keys of each nested array are added to the default

 *        HTTP codes. Example:

 *

 *        httpCodes(404); // returns array(404 => 'Not Found')

 *

 *        httpCodes(array(

 *            701 => 'Unicorn Moved',

 *            800 => 'Unexpected Minotaur'

 *        )); // sets these new values, and returns true

 *

 * @return array Associative array of the HTTP codes as keys, and the message

 *    strings as values, or null of the given $code does not exist.

 * @deprecated 3.0.0 Since 2.4. Will be removed in 3.0. Use CakeResponse::httpCodes().

 */

	public function httpCodes($code = null) {

		return $this->response->httpCodes($code);

	}

/**

 * Loads and instantiates models required by this controller.

 * If the model is non existent, it will throw a missing database table error, as CakePHP generates

 * dynamic models for the time being.

 *

 * @param string $modelClass Name of model class to load

 * @param int|string $id Initial ID the instanced model class should have

 * @return bool True if the model was found

 * @throws MissingModelException if the model class cannot be found.

 */

	public function loadModel($modelClass = null, $id = null) {

		if ($modelClass === null) {

			$modelClass = $this->modelClass;

		}

		$this->uses = ($this->uses) ? (array)$this->uses : array();

		if (!in_array($modelClass, $this->uses, true)) {

			$this->uses[] = $modelClass;

		}

		list($plugin, $modelClass) = pluginSplit($modelClass, true);

		$this->{$modelClass} = ClassRegistry::init(array(

			'class' => $plugin . $modelClass, 'alias' => $modelClass, 'id' => $id

		));

		if (!$this->{$modelClass}) {

			throw new MissingModelException($modelClass);

		}

		return true;

	}

/**

 * Redirects to given $url, after turning off $this->autoRender.

 * Script execution is halted after the redirect.

 *

 * @param string|array $url A string or array-based URL pointing to another location within the app,

 *     or an absolute URL

 * @param int|array|null $status HTTP status code (eg: 301). Defaults to 302 when null is passed.

 * @param bool $exit If true, exit() will be called after the redirect

 * @return void

 * @triggers Controller.beforeRedirect $this, array($url, $status, $exit)

 * @link http://book.cakephp.org/2.0/en/controllers.html#Controller::redirect

 */

	public function redirect($url, $status = null, $exit = true) {

		$this->autoRender = false;

		if (is_array($status)) {

			extract($status, EXTR_OVERWRITE);

		}

		$event = new CakeEvent('Controller.beforeRedirect', $this, array($url, $status, $exit));

		list($event->break, $event->breakOn, $event->collectReturn) = array(true, false, true);

		$this->getEventManager()->dispatch($event);

		if ($event->isStopped()) {

			return;

		}

		$response = $event->result;

		extract($this->_parseBeforeRedirect($response, $url, $status, $exit), EXTR_OVERWRITE);

		if ($url !== null) {

			$this->response->header('Location', Router::url($url, true));

		}

		if (is_string($status)) {

			$codes = array_flip($this->response->httpCodes());

			if (isset($codes[$status])) {

				$status = $codes[$status];

			}

		}

		if ($status === null) {

			$status = 302;

		}

		$this->response->statusCode($status);

		if ($exit) {

			$this->response->send();

			$this->_stop();

		}

	}

/**

 * Parse beforeRedirect Response

 *

 * @param mixed $response Response from beforeRedirect callback

 * @param string|array $url The same value of beforeRedirect

 * @param int $status The same value of beforeRedirect

 * @param bool $exit The same value of beforeRedirect

 * @return array Array with keys url, status and exit

 */

	protected function _parseBeforeRedirect($response, $url, $status, $exit) {

		if (is_array($response) && array_key_exists(0, $response)) {

			foreach ($response as $resp) {

				if (is_array($resp) && isset($resp['url'])) {

					extract($resp, EXTR_OVERWRITE);

				} elseif ($resp !== null) {

					$url = $resp;

				}

			}

		} elseif (is_array($response)) {

			extract($response, EXTR_OVERWRITE);

		}

		return compact('url', 'status', 'exit');

	}

/**

 * Convenience and object wrapper method for CakeResponse::header().

 *

 * @param string $status The header message that is being set.

 * @return void

 * @deprecated 3.0.0 Will be removed in 3.0. Use CakeResponse::header().

 */

	public function header($status) {

		$this->response->header($status);

	}

/**

 * Saves a variable for use inside a view template.

 *

 * @param string|array $one A string or an array of data.

 * @param string|array $two Value in case $one is a string (which then works as the key).

 *   Unused if $one is an associative array, otherwise serves as the values to $one's keys.

 * @return void

 * @link http://book.cakephp.org/2.0/en/controllers.html#interacting-with-views

 */

	public function set($one, $two = null) {

		if (is_array($one)) {

			if (is_array($two)) {

				$data = array_combine($one, $two);

			} else {

				$data = $one;

			}

		} else {

			$data = array($one => $two);

		}

		$this->viewVars = $data + $this->viewVars;

	}

/**

 * Internally redirects one action to another. Does not perform another HTTP request unlike Controller::redirect()

 *

 * Examples:

 *

 * ```

 * setAction('another_action');

 * setAction('action_with_parameters', $parameter1);

 * ```

 *

 * @param string $action The new action to be 'redirected' to.

 *   Any other parameters passed to this method will be passed as parameters to the new action.

 * @return mixed Returns the return value of the called action

 */

	public function setAction($action) {

		$this->request->params['action'] = $action;

		$this->view = $action;

		$args = func_get_args();

		unset($args[0]);

		return call_user_func_array(array(&$this, $action), $args);

	}

/**

 * Returns number of errors in a submitted FORM.

 *

 * @return int Number of errors

 * @deprecated 3.0.0 This method will be removed in 3.0

 */

	public function validate() {

		$args = func_get_args();

		$errors = call_user_func_array(array(&$this, 'validateErrors'), $args);

		if ($errors === false) {

			return 0;

		}

		return count($errors);

	}

/**

 * Validates models passed by parameters. Takes a list of models as a variable argument.

 * Example:

 *

 * `$errors = $this->validateErrors($this->Article, $this->User);`

 *

 * @return array Validation errors, or false if none

 * @deprecated 3.0.0 This method will be removed in 3.0

 */

	public function validateErrors() {

		$objects = func_get_args();

		if (empty($objects)) {

			return false;

		}

		$errors = array();

		foreach ($objects as $object) {

			if (isset($this->{$object->alias})) {

				$object = $this->{$object->alias};

			}

			$object->set($object->data);

			$errors = array_merge($errors, $object->invalidFields());

		}

		return $this->validationErrors = (!empty($errors) ? $errors : false);

	}

/**

 * Instantiates the correct view class, hands it its data, and uses it to render the view output.

 *

 * @param string $view View to use for rendering

 * @param string $layout Layout to use

 * @return CakeResponse A response object containing the rendered view.

 * @triggers Controller.beforeRender $this

 * @link http://book.cakephp.org/2.0/en/controllers.html#Controller::render

 */

	public function render($view = null, $layout = null) {

		$event = new CakeEvent('Controller.beforeRender', $this);

		$this->getEventManager()->dispatch($event);

		if ($event->isStopped()) {

			$this->autoRender = false;

			return $this->response;

		}

		if (!empty($this->uses) && is_array($this->uses)) {

			foreach ($this->uses as $model) {

				list($plugin, $className) = pluginSplit($model);

				$this->request->params['models'][$className] = compact('plugin', 'className');

			}

		}

		$this->View = $this->_getViewObject();

		$models = ClassRegistry::keys();

		foreach ($models as $currentModel) {

			$currentObject = ClassRegistry::getObject($currentModel);

			if ($currentObject instanceof Model) {

				$className = get_class($currentObject);

				list($plugin) = pluginSplit(App::location($className));

				$this->request->params['models'][$currentObject->alias] = compact('plugin', 'className');

				$this->View->validationErrors[$currentObject->alias] =& $currentObject->validationErrors;

			}

		}

		$this->autoRender = false;

		$this->response->body($this->View->render($view, $layout));

		return $this->response;

	}

/**

 * Returns the referring URL for this request.

 *

 * @param string $default Default URL to use if HTTP_REFERER cannot be read from headers

 * @param bool $local If true, restrict referring URLs to local server

 * @return string Referring URL

 * @link http://book.cakephp.org/2.0/en/controllers.html#Controller::referer

 */

	public function referer($default = null, $local = false) {

		if (!$this->request) {

			return '/';

		}

		$referer = $this->request->referer($local);

		if ($referer === '/' && $default && $default !== $referer) {

			return Router::url($default, !$local);

		}

		return $referer;

	}

/**

 * Forces the user's browser not to cache the results of the current request.

 *

 * @return void

 * @link http://book.cakephp.org/2.0/en/controllers.html#Controller::disableCache

 * @deprecated 3.0.0 Will be removed in 3.0. Use CakeResponse::disableCache().

 */

	public function disableCache() {

		$this->response->disableCache();

	}

/**

 * Shows a message to the user for $pause seconds, then redirects to $url.

 * Uses flash.ctp as the default layout for the message.

 * Does not work if the current debug level is higher than 0.

 *

 * @param string $message Message to display to the user

 * @param string|array $url Relative string or array-based URL to redirect to after the time expires