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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Controller
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Action.php 16541 2009-07-07 06:59:03Z bkarwin $
*/
/**
* @see Zend_Controller_Action_HelperBroker
*/
require_once 'Zend/Controller/Action/HelperBroker.php';
/**
* @see Zend_Controller_Action_Interface
*/
require_once 'Zend/Controller/Action/Interface.php';
/**
* @see Zend_Controller_Front
*/
require_once 'Zend/Controller/Front.php';
/**
* @category Zend
* @package Zend_Controller
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
abstract class Zend_Controller_Action implements Zend_Controller_Action_Interface
{
/**
* @var array of existing class methods
*/
protected $_classMethods;
/**
* Word delimiters (used for normalizing view script paths)
* @var array
*/
protected $_delimiters;
/**
* Array of arguments provided to the constructor, minus the
* {@link $_request Request object}.
* @var array
*/
protected $_invokeArgs = array();
/**
* Front controller instance
* @var Zend_Controller_Front
*/
protected $_frontController;
/**
* Zend_Controller_Request_Abstract object wrapping the request environment
* @var Zend_Controller_Request_Abstract
*/
protected $_request = null;
/**
* Zend_Controller_Response_Abstract object wrapping the response
* @var Zend_Controller_Response_Abstract
*/
protected $_response = null;
/**
* View script suffix; defaults to 'phtml'
* @see {render()}
* @var string
*/
public $viewSuffix = 'phtml';
/**
* View object
* @var Zend_View_Interface
*/
public $view;
/**
* Helper Broker to assist in routing help requests to the proper object
*
* @var Zend_Controller_Action_HelperBroker
*/
protected $_helper = null;
/**
* Class constructor
*
* The request and response objects should be registered with the
* controller, as should be any additional optional arguments; these will be
* available via {@link getRequest()}, {@link getResponse()}, and
* {@link getInvokeArgs()}, respectively.
*
* When overriding the constructor, please consider this usage as a best
* practice and ensure that each is registered appropriately; the easiest
* way to do so is to simply call parent::__construct($request, $response,
* $invokeArgs).
*
* After the request, response, and invokeArgs are set, the
* {@link $_helper helper broker} is initialized.
*
* Finally, {@link init()} is called as the final action of
* instantiation, and may be safely overridden to perform initialization
* tasks; as a general rule, override {@link init()} instead of the
* constructor to customize an action controller's instantiation.
*
* @param Zend_Controller_Request_Abstract $request
* @param Zend_Controller_Response_Abstract $response
* @param array $invokeArgs Any additional invocation arguments
* @return void
*/
public function __construct(Zend_Controller_Request_Abstract $request, Zend_Controller_Response_Abstract $response, array $invokeArgs = array())
{
$this->setRequest($request)
->setResponse($response)
->_setInvokeArgs($invokeArgs);
$this->_helper = new Zend_Controller_Action_HelperBroker($this);
$this->init();
}
/**
* Initialize object
*
* Called from {@link __construct()} as final step of object instantiation.
*
* @return void
*/
public function init()
{
}
/**
* Initialize View object
*
* Initializes {@link $view} if not otherwise a Zend_View_Interface.
*
* If {@link $view} is not otherwise set, instantiates a new Zend_View
* object, using the 'views' subdirectory at the same level as the
* controller directory for the current module as the base directory.
* It uses this to set the following:
* - script path = views/scripts/
* - helper path = views/helpers/
* - filter path = views/filters/
*
* @return Zend_View_Interface
* @throws Zend_Controller_Exception if base view directory does not exist
*/
public function initView()
{
if (!$this->getInvokeArg('noViewRenderer') && $this->_helper->hasHelper('viewRenderer')) {
return $this->view;
}
require_once 'Zend/View/Interface.php';
if (isset($this->view) && ($this->view instanceof Zend_View_Interface)) {
return $this->view;
}
$request = $this->getRequest();
$module = $request->getModuleName();
$dirs = $this->getFrontController()->getControllerDirectory();
if (empty($module) || !isset($dirs[$module])) {
$module = $this->getFrontController()->getDispatcher()->getDefaultModule();
}
$baseDir = dirname($dirs[$module]) . DIRECTORY_SEPARATOR . 'views';
if (!file_exists($baseDir) || !is_dir($baseDir)) {
require_once 'Zend/Controller/Exception.php';
throw new Zend_Controller_Exception('Missing base view directory ("' . $baseDir . '")');
}
require_once 'Zend/View.php';
$this->view = new Zend_View(array('basePath' => $baseDir));
return $this->view;
}
/**
* Render a view
*
* Renders a view. By default, views are found in the view script path as
* <controller>/<action>.phtml. You may change the script suffix by
* resetting {@link $viewSuffix}. You may omit the controller directory
* prefix by specifying boolean true for $noController.
*
* By default, the rendered contents are appended to the response. You may
* specify the named body content segment to set by specifying a $name.
*
* @see Zend_Controller_Response_Abstract::appendBody()
* @param string|null $action Defaults to action registered in request object
* @param string|null $name Response object named path segment to use; defaults to null
* @param bool $noController Defaults to false; i.e. use controller name as subdir in which to search for view script
* @return void
*/
public function render($action = null, $name = null, $noController = false)
{
if (!$this->getInvokeArg('noViewRenderer') && $this->_helper->hasHelper('viewRenderer')) {
return $this->_helper->viewRenderer->render($action, $name, $noController);
}
$view = $this->initView();
$script = $this->getViewScript($action, $noController);
$this->getResponse()->appendBody(
$view->render($script),
$name
);
}
/**
* Render a given view script
*
* Similar to {@link render()}, this method renders a view script. Unlike render(),
* however, it does not autodetermine the view script via {@link getViewScript()},
* but instead renders the script passed to it. Use this if you know the
* exact view script name and path you wish to use, or if using paths that do not
* conform to the spec defined with getViewScript().
*
* By default, the rendered contents are appended to the response. You may
* specify the named body content segment to set by specifying a $name.
*
* @param string $script
* @param string $name
* @return void
*/
public function renderScript($script, $name = null)
{
if (!$this->getInvokeArg('noViewRenderer') && $this->_helper->hasHelper('viewRenderer')) {
return $this->_helper->viewRenderer->renderScript($script, $name);
}
$view = $this->initView();
$this->getResponse()->appendBody(
$view->render($script),
$name
);
}
/**
* Construct view script path
*
* Used by render() to determine the path to the view script.
*
* @param string $action Defaults to action registered in request object
* @param bool $noController Defaults to false; i.e. use controller name as subdir in which to search for view script
* @return string
* @throws Zend_Controller_Exception with bad $action
*/
public function getViewScript($action = null, $noController = null)
{
if (!$this->getInvokeArg('noViewRenderer') && $this->_helper->hasHelper('viewRenderer')) {
$viewRenderer = $this->_helper->getHelper('viewRenderer');
if (null !== $noController) {
$viewRenderer->setNoController($noController);
}
return $viewRenderer->getViewScript($action);
}
$request = $this->getRequest();
if (null === $action) {
$action = $request->getActionName();
} elseif (!is_string($action)) {
require_once 'Zend/Controller/Exception.php';
throw new Zend_Controller_Exception('Invalid action specifier for view render');
}
if (null === $this->_delimiters) {
$dispatcher = Zend_Controller_Front::getInstance()->getDispatcher();
$wordDelimiters = $dispatcher->getWordDelimiter();
$pathDelimiters = $dispatcher->getPathDelimiter();
$this->_delimiters = array_unique(array_merge($wordDelimiters, (array) $pathDelimiters));
}
$action = str_replace($this->_delimiters, '-', $action);
$script = $action . '.' . $this->viewSuffix;
if (!$noController) {
$controller = $request->getControllerName();
$controller = str_replace($this->_delimiters, '-', $controller);
$script = $controller . DIRECTORY_SEPARATOR . $script;
}
return $script;
}
/**
* Return the Request object
*
* @return Zend_Controller_Request_Abstract
*/
public function getRequest()
{
return $this->_request;
}
/**
* Set the Request object
*
* @param Zend_Controller_Request_Abstract $request
* @return Zend_Controller_Action
*/
public function setRequest(Zend_Controller_Request_Abstract $request)
{
$this->_request = $request;
return $this;
}
/**
* Return the Response object
*
* @return Zend_Controller_Response_Abstract
*/
public function getResponse()
{
return $this->_response;
}
/**
* Set the Response object
*
* @param Zend_Controller_Response_Abstract $response
* @return Zend_Controller_Action
*/
public function setResponse(Zend_Controller_Response_Abstract $response)
{
$this->_response = $response;
return $this;
}
/**
* Set invocation arguments
*
* @param array $args
* @return Zend_Controller_Action
*/
protected function _setInvokeArgs(array $args = array())
{
$this->_invokeArgs = $args;
return $this;
}
/**
* Return the array of constructor arguments (minus the Request object)
*
* @return array
*/
public function getInvokeArgs()
{
return $this->_invokeArgs;
}
/**
* Return a single invocation argument
*
* @param string $key
* @return mixed
*/
public function getInvokeArg($key)
{
if (isset($this->_invokeArgs[$key])) {
return $this->_invokeArgs[$key];
}
return null;
}
/**
* Get a helper by name
*
* @param string $helperName
* @return Zend_Controller_Action_Helper_Abstract
*/
public function getHelper($helperName)
{
return $this->_helper->{$helperName};
}
/**
* Get a clone of a helper by name
*
* @param string $helperName
* @return Zend_Controller_Action_Helper_Abstract
*/
public function getHelperCopy($helperName)
{
return clone $this->_helper->{$helperName};
}
/**
* Set the front controller instance
*
* @param Zend_Controller_Front $front
* @return Zend_Controller_Action
*/
public function setFrontController(Zend_Controller_Front $front)
{
$this->_frontController = $front;
return $this;
}
/**
* Retrieve Front Controller
*
* @return Zend_Controller_Front
*/
public function getFrontController()
{
// Used cache version if found
if (null !== $this->_frontController) {
return $this->_frontController;
}
// Grab singleton instance, if class has been loaded
if (class_exists('Zend_Controller_Front')) {
$this->_frontController = Zend_Controller_Front::getInstance();
return $this->_frontController;
}
// Throw exception in all other cases
require_once 'Zend/Controller/Exception.php';
throw new Zend_Controller_Exception('Front controller class has not been loaded');
}
/**
* Pre-dispatch routines
*
* Called before action method. If using class with
* {@link Zend_Controller_Front}, it may modify the
* {@link $_request Request object} and reset its dispatched flag in order
* to skip processing the current action.
*
* @return void
*/
public function preDispatch()
{
}
/**
* Post-dispatch routines
*
* Called after action method execution. If using class with
* {@link Zend_Controller_Front}, it may modify the
* {@link $_request Request object} and reset its dispatched flag in order
* to process an additional action.
*
* Common usages for postDispatch() include rendering content in a sitewide
* template, link url correction, setting headers, etc.
*
* @return void
*/
public function postDispatch()
{
}
/**
* Proxy for undefined methods. Default behavior is to throw an
* exception on undefined methods, however this function can be
* overridden to implement magic (dynamic) actions, or provide run-time
* dispatching.
*
* @param string $methodName
* @param array $args
* @return void
* @throws Zend_Controller_Action_Exception
*/
public function __call($methodName, $args)
{
require_once 'Zend/Controller/Action/Exception.php';
if ('Action' == substr($methodName, -6)) {
$action = substr($methodName, 0, strlen($methodName) - 6);
throw new Zend_Controller_Action_Exception(sprintf('Action "%s" does not exist and was not trapped in __call()', $action), 404);
}
throw new Zend_Controller_Action_Exception(sprintf('Method "%s" does not exist and was not trapped in __call()', $methodName), 500);
}
/**
* Dispatch the requested action
*
* @param string $action Method name of action
* @return void
*/
public function dispatch($action)
{
// Notify helpers of action preDispatch state
$this->_helper->notifyPreDispatch();
$this->preDispatch();
if ($this->getRequest()->isDispatched()) {
if (null === $this->_classMethods) {
$this->_classMethods = get_class_methods($this);
}
// preDispatch() didn't change the action, so we can continue
if ($this->getInvokeArg('useCaseSensitiveActions') || in_array($action, $this->_classMethods)) {
if ($this->getInvokeArg('useCaseSensitiveActions')) {
trigger_error('Using case sensitive actions without word separators is deprecated; please do not rely on this "feature"');
}
$this->$action();
} else {
$this->__call($action, array());
}
$this->postDispatch();
}
// whats actually important here is that this action controller is
// shutting down, regardless of dispatching; notify the helpers of this
// state
$this->_helper->notifyPostDispatch();
}
/**
* Call the action specified in the request object, and return a response
*
* Not used in the Action Controller implementation, but left for usage in
* Page Controller implementations. Dispatches a method based on the
* request.
*
* Returns a Zend_Controller_Response_Abstract object, instantiating one
* prior to execution if none exists in the controller.
*
* {@link preDispatch()} is called prior to the action,
* {@link postDispatch()} is called following it.
*
* @param null|Zend_Controller_Request_Abstract $request Optional request
* object to use
* @param null|Zend_Controller_Response_Abstract $response Optional response
* object to use
* @return Zend_Controller_Response_Abstract
*/
public function run(Zend_Controller_Request_Abstract $request = null, Zend_Controller_Response_Abstract $response = null)
{
if (null !== $request) {
$this->setRequest($request);
} else {
$request = $this->getRequest();
}
if (null !== $response) {
$this->setResponse($response);
}
$action = $request->getActionName();
if (empty($action)) {
$action = 'index';
}
$action = $action . 'Action';
$request->setDispatched(true);
$this->dispatch($action);
return $this->getResponse();
}
/**
* Gets a parameter from the {@link $_request Request object}. If the
* parameter does not exist, NULL will be returned.
*
* If the parameter does not exist and $default is set, then
* $default will be returned instead of NULL.
*
* @param string $paramName
* @param mixed $default
* @return mixed
*/
protected function _getParam($paramName, $default = null)
{
$value = $this->getRequest()->getParam($paramName);
if ((null == $value) && (null !== $default)) {
$value = $default;
}
return $value;
}
/**
* Set a parameter in the {@link $_request Request object}.
*
* @param string $paramName
* @param mixed $value
* @return Zend_Controller_Action
*/
protected function _setParam($paramName, $value)
{
$this->getRequest()->setParam($paramName, $value);
return $this;
}
/**
* Determine whether a given parameter exists in the
* {@link $_request Request object}.
*
* @param string $paramName
* @return boolean
*/
protected function _hasParam($paramName)
{
return null !== $this->getRequest()->getParam($paramName);
}
/**
* Return all parameters in the {@link $_request Request object}
* as an associative array.
*
* @return array
*/
protected function _getAllParams()
{
return $this->getRequest()->getParams();
}
/**
* Forward to another controller/action.
*
* It is important to supply the unformatted names, i.e. "article"
* rather than "ArticleController". The dispatcher will do the
* appropriate formatting when the request is received.
*
* If only an action name is provided, forwards to that action in this
* controller.
*
* If an action and controller are specified, forwards to that action and
* controller in this module.
*
* Specifying an action, controller, and module is the most specific way to
* forward.
*
* A fourth argument, $params, will be used to set the request parameters.
* If either the controller or module are unnecessary for forwarding,
* simply pass null values for them before specifying the parameters.
*
* @param string $action
* @param string $controller
* @param string $module
* @param array $params
* @return void
*/
final protected function _forward($action, $controller = null, $module = null, array $params = null)
{
$request = $this->getRequest();
if (null !== $params) {
$request->setParams($params);
}
if (null !== $controller) {
$request->setControllerName($controller);
// Module should only be reset if controller has been specified
if (null !== $module) {
$request->setModuleName($module);
}
}
$request->setActionName($action)
->setDispatched(false);
}
/**
* Redirect to another URL
*
* Proxies to {@link Zend_Controller_Action_Helper_Redirector::gotoUrl()}.
*
* @param string $url
* @param array $options Options to be used when redirecting
* @return void
*/
protected function _redirect($url, array $options = array())
{
$this->_helper->redirector->gotoUrl($url, $options);
}
}
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