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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: Front.php 16541 2009-07-07 06:59:03Z bkarwin $
*/
/** Zend_Loader */
require_once 'Zend/Loader.php';
/** Zend_Controller_Action_HelperBroker */
require_once 'Zend/Controller/Action/HelperBroker.php';
/** Zend_Controller_Plugin_Broker */
require_once 'Zend/Controller/Plugin/Broker.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
*/
class Zend_Controller_Front
{
/**
* Base URL
* @var string
*/
protected $_baseUrl = null;
/**
* Directory|ies where controllers are stored
*
* @var string|array
*/
protected $_controllerDir = null;
/**
* Instance of Zend_Controller_Dispatcher_Interface
* @var Zend_Controller_Dispatcher_Interface
*/
protected $_dispatcher = null;
/**
* Singleton instance
*
* Marked only as protected to allow extension of the class. To extend,
* simply override {@link getInstance()}.
*
* @var Zend_Controller_Front
*/
protected static $_instance = null;
/**
* Array of invocation parameters to use when instantiating action
* controllers
* @var array
*/
protected $_invokeParams = array();
/**
* Subdirectory within a module containing controllers; defaults to 'controllers'
* @var string
*/
protected $_moduleControllerDirectoryName = 'controllers';
/**
* Instance of Zend_Controller_Plugin_Broker
* @var Zend_Controller_Plugin_Broker
*/
protected $_plugins = null;
/**
* Instance of Zend_Controller_Request_Abstract
* @var Zend_Controller_Request_Abstract
*/
protected $_request = null;
/**
* Instance of Zend_Controller_Response_Abstract
* @var Zend_Controller_Response_Abstract
*/
protected $_response = null;
/**
* Whether or not to return the response prior to rendering output while in
* {@link dispatch()}; default is to send headers and render output.
* @var boolean
*/
protected $_returnResponse = false;
/**
* Instance of Zend_Controller_Router_Interface
* @var Zend_Controller_Router_Interface
*/
protected $_router = null;
/**
* Whether or not exceptions encountered in {@link dispatch()} should be
* thrown or trapped in the response object
* @var boolean
*/
protected $_throwExceptions = false;
/**
* Constructor
*
* Instantiate using {@link getInstance()}; front controller is a singleton
* object.
*
* Instantiates the plugin broker.
*
* @return void
*/
protected function __construct()
{
$this->_plugins = new Zend_Controller_Plugin_Broker();
}
/**
* Enforce singleton; disallow cloning
*
* @return void
*/
private function __clone()
{
}
/**
* Singleton instance
*
* @return Zend_Controller_Front
*/
public static function getInstance()
{
if (null === self::$_instance) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* Resets all object properties of the singleton instance
*
* Primarily used for testing; could be used to chain front controllers.
*
* Also resets action helper broker, clearing all registered helpers.
*
* @return void
*/
public function resetInstance()
{
$reflection = new ReflectionObject($this);
foreach ($reflection->getProperties() as $property) {
$name = $property->getName();
switch ($name) {
case '_instance':
break;
case '_controllerDir':
case '_invokeParams':
$this->{$name} = array();
break;
case '_plugins':
$this->{$name} = new Zend_Controller_Plugin_Broker();
break;
case '_throwExceptions':
case '_returnResponse':
$this->{$name} = false;
break;
case '_moduleControllerDirectoryName':
$this->{$name} = 'controllers';
break;
default:
$this->{$name} = null;
break;
}
}
Zend_Controller_Action_HelperBroker::resetHelpers();
}
/**
* Convenience feature, calls setControllerDirectory()->setRouter()->dispatch()
*
* In PHP 5.1.x, a call to a static method never populates $this -- so run()
* may actually be called after setting up your front controller.
*
* @param string|array $controllerDirectory Path to Zend_Controller_Action
* controller classes or array of such paths
* @return void
* @throws Zend_Controller_Exception if called from an object instance
*/
public static function run($controllerDirectory)
{
self::getInstance()
->setControllerDirectory($controllerDirectory)
->dispatch();
}
/**
* Add a controller directory to the controller directory stack
*
* If $args is presented and is a string, uses it for the array key mapping
* to the directory specified.
*
* @param string $directory
* @param string $module Optional argument; module with which to associate directory. If none provided, assumes 'default'
* @return Zend_Controller_Front
* @throws Zend_Controller_Exception if directory not found or readable
*/
public function addControllerDirectory($directory, $module = null)
{
$this->getDispatcher()->addControllerDirectory($directory, $module);
return $this;
}
/**
* Set controller directory
*
* Stores controller directory(ies) in dispatcher. May be an array of
* directories or a string containing a single directory.
*
* @param string|array $directory Path to Zend_Controller_Action controller
* classes or array of such paths
* @param string $module Optional module name to use with string $directory
* @return Zend_Controller_Front
*/
public function setControllerDirectory($directory, $module = null)
{
$this->getDispatcher()->setControllerDirectory($directory, $module);
return $this;
}
/**
* Retrieve controller directory
*
* Retrieves:
* - Array of all controller directories if no $name passed
* - String path if $name passed and exists as a key in controller directory array
* - null if $name passed but does not exist in controller directory keys
*
* @param string $name Default null
* @return array|string|null
*/
public function getControllerDirectory($name = null)
{
return $this->getDispatcher()->getControllerDirectory($name);
}
/**
* Remove a controller directory by module name
*
* @param string $module
* @return bool
*/
public function removeControllerDirectory($module)
{
return $this->getDispatcher()->removeControllerDirectory($module);
}
/**
* Specify a directory as containing modules
*
* Iterates through the directory, adding any subdirectories as modules;
* the subdirectory within each module named after {@link $_moduleControllerDirectoryName}
* will be used as the controller directory path.
*
* @param string $path
* @return Zend_Controller_Front
*/
public function addModuleDirectory($path)
{
try{
$dir = new DirectoryIterator($path);
}catch(Exception $e){
require_once 'Zend/Controller/Exception.php';
throw new Zend_Controller_Exception("Directory $path not readable");
}
foreach ($dir as $file) {
if ($file->isDot() || !$file->isDir()) {
continue;
}
$module = $file->getFilename();
// Don't use SCCS directories as modules
if (preg_match('/^[^a-z]/i', $module) || ('CVS' == $module)) {
continue;
}
$moduleDir = $file->getPathname() . DIRECTORY_SEPARATOR . $this->getModuleControllerDirectoryName();
$this->addControllerDirectory($moduleDir, $module);
}
return $this;
}
/**
* Return the path to a module directory (but not the controllers directory within)
*
* @param string $module
* @return string|null
*/
public function getModuleDirectory($module = null)
{
if (null === $module) {
$request = $this->getRequest();
if (null !== $request) {
$module = $this->getRequest()->getModuleName();
}
if (empty($module)) {
$module = $this->getDispatcher()->getDefaultModule();
}
}
$controllerDir = $this->getControllerDirectory($module);
if ((null === $controllerDir) || !is_string($controllerDir)) {
return null;
}
return dirname($controllerDir);
}
/**
* Set the directory name within a module containing controllers
*
* @param string $name
* @return Zend_Controller_Front
*/
public function setModuleControllerDirectoryName($name = 'controllers')
{
$this->_moduleControllerDirectoryName = (string) $name;
return $this;
}
/**
* Return the directory name within a module containing controllers
*
* @return string
*/
public function getModuleControllerDirectoryName()
{
return $this->_moduleControllerDirectoryName;
}
/**
* Set the default controller (unformatted string)
*
* @param string $controller
* @return Zend_Controller_Front
*/
public function setDefaultControllerName($controller)
{
$dispatcher = $this->getDispatcher();
$dispatcher->setDefaultControllerName($controller);
return $this;
}
/**
* Retrieve the default controller (unformatted string)
*
* @return string
*/
public function getDefaultControllerName()
{
return $this->getDispatcher()->getDefaultControllerName();
}
/**
* Set the default action (unformatted string)
*
* @param string $action
* @return Zend_Controller_Front
*/
public function setDefaultAction($action)
{
$dispatcher = $this->getDispatcher();
$dispatcher->setDefaultAction($action);
return $this;
}
/**
* Retrieve the default action (unformatted string)
*
* @return string
*/
public function getDefaultAction()
{
return $this->getDispatcher()->getDefaultAction();
}
/**
* Set the default module name
*
* @param string $module
* @return Zend_Controller_Front
*/
public function setDefaultModule($module)
{
$dispatcher = $this->getDispatcher();
$dispatcher->setDefaultModule($module);
return $this;
}
/**
* Retrieve the default module
*
* @return string
*/
public function getDefaultModule()
{
return $this->getDispatcher()->getDefaultModule();
}
/**
* Set request class/object
*
* Set the request object. The request holds the request environment.
*
* If a class name is provided, it will instantiate it
*
* @param string|Zend_Controller_Request_Abstract $request
* @throws Zend_Controller_Exception if invalid request class
* @return Zend_Controller_Front
*/
public function setRequest($request)
{
if (is_string($request)) {
if (!class_exists($request)) {
require_once 'Zend/Loader.php';
Zend_Loader::loadClass($request);
}
$request = new $request();
}
if (!$request instanceof Zend_Controller_Request_Abstract) {
require_once 'Zend/Controller/Exception.php';
throw new Zend_Controller_Exception('Invalid request class');
}
$this->_request = $request;
return $this;
}
/**
* Return the request object.
*
* @return null|Zend_Controller_Request_Abstract
*/
public function getRequest()
{
return $this->_request;
}
/**
* Set router class/object
*
* Set the router object. The router is responsible for mapping
* the request to a controller and action.
*
* If a class name is provided, instantiates router with any parameters
* registered via {@link setParam()} or {@link setParams()}.
*
* @param string|Zend_Controller_Router_Interface $router
* @throws Zend_Controller_Exception if invalid router class
* @return Zend_Controller_Front
*/
public function setRouter($router)
{
if (is_string($router)) {
if (!class_exists($router)) {
require_once 'Zend/Loader.php';
Zend_Loader::loadClass($router);
}
$router = new $router();
}
if (!$router instanceof Zend_Controller_Router_Interface) {
require_once 'Zend/Controller/Exception.php';
throw new Zend_Controller_Exception('Invalid router class');
}
$router->setFrontController($this);
$this->_router = $router;
return $this;
}
/**
* Return the router object.
*
* Instantiates a Zend_Controller_Router_Rewrite object if no router currently set.
*
* @return Zend_Controller_Router_Interface
*/
public function getRouter()
{
if (null == $this->_router) {
require_once 'Zend/Controller/Router/Rewrite.php';
$this->setRouter(new Zend_Controller_Router_Rewrite());
}
return $this->_router;
}
/**
* Set the base URL used for requests
*
* Use to set the base URL segment of the REQUEST_URI to use when
* determining PATH_INFO, etc. Examples:
* - /admin
* - /myapp
* - /subdir/index.php
*
* Note that the URL should not include the full URI. Do not use:
* - http://example.com/admin
* - http://example.com/myapp
* - http://example.com/subdir/index.php
*
* If a null value is passed, this can be used as well for autodiscovery (default).
*
* @param string $base
* @return Zend_Controller_Front
* @throws Zend_Controller_Exception for non-string $base
*/
public function setBaseUrl($base = null)
{
if (!is_string($base) && (null !== $base)) {
require_once 'Zend/Controller/Exception.php';
throw new Zend_Controller_Exception('Rewrite base must be a string');
}
$this->_baseUrl = $base;
if ((null !== ($request = $this->getRequest())) && (method_exists($request, 'setBaseUrl'))) {
$request->setBaseUrl($base);
}
return $this;
}
/**
* Retrieve the currently set base URL
*
* @return string
*/
public function getBaseUrl()
{
$request = $this->getRequest();
if ((null !== $request) && method_exists($request, 'getBaseUrl')) {
return $request->getBaseUrl();
}
return $this->_baseUrl;
}
/**
* Set the dispatcher object. The dispatcher is responsible for
* taking a Zend_Controller_Dispatcher_Token object, instantiating the controller, and
* call the action method of the controller.
*
* @param Zend_Controller_Dispatcher_Interface $dispatcher
* @return Zend_Controller_Front
*/
public function setDispatcher(Zend_Controller_Dispatcher_Interface $dispatcher)
{
$this->_dispatcher = $dispatcher;
return $this;
}
/**
* Return the dispatcher object.
*
* @return Zend_Controller_Dispatcher_Interface
*/
public function getDispatcher()
{
/**
* Instantiate the default dispatcher if one was not set.
*/
if (!$this->_dispatcher instanceof Zend_Controller_Dispatcher_Interface) {
require_once 'Zend/Controller/Dispatcher/Standard.php';
$this->_dispatcher = new Zend_Controller_Dispatcher_Standard();
}
return $this->_dispatcher;
}
/**
* Set response class/object
*
* Set the response object. The response is a container for action
* responses and headers. Usage is optional.
*
* If a class name is provided, instantiates a response object.
*
* @param string|Zend_Controller_Response_Abstract $response
* @throws Zend_Controller_Exception if invalid response class
* @return Zend_Controller_Front
*/
public function setResponse($response)
{
if (is_string($response)) {
if (!class_exists($response)) {
require_once 'Zend/Loader.php';
Zend_Loader::loadClass($response);
}
$response = new $response();
}
if (!$response instanceof Zend_Controller_Response_Abstract) {
require_once 'Zend/Controller/Exception.php';
throw new Zend_Controller_Exception('Invalid response class');
}
$this->_response = $response;
return $this;
}
/**
* Return the response object.
*
* @return null|Zend_Controller_Response_Abstract
*/
public function getResponse()
{
return $this->_response;
}
/**
* Add or modify a parameter to use when instantiating an action controller
*
* @param string $name
* @param mixed $value
* @return Zend_Controller_Front
*/
public function setParam($name, $value)
{
$name = (string) $name;
$this->_invokeParams[$name] = $value;
return $this;
}
/**
* Set parameters to pass to action controller constructors
*
* @param array $params
* @return Zend_Controller_Front
*/
public function setParams(array $params)
{
$this->_invokeParams = array_merge($this->_invokeParams, $params);
return $this;
}
/**
* Retrieve a single parameter from the controller parameter stack
*
* @param string $name
* @return mixed
*/
public function getParam($name)
{
if(isset($this->_invokeParams[$name])) {
return $this->_invokeParams[$name];
}
return null;
}
/**
* Retrieve action controller instantiation parameters
*
* @return array
*/
public function getParams()
{
return $this->_invokeParams;
}
/**
* Clear the controller parameter stack
*
* By default, clears all parameters. If a parameter name is given, clears
* only that parameter; if an array of parameter names is provided, clears
* each.
*
* @param null|string|array single key or array of keys for params to clear
* @return Zend_Controller_Front
*/
public function clearParams($name = null)
{
if (null === $name) {
$this->_invokeParams = array();
} elseif (is_string($name) && isset($this->_invokeParams[$name])) {
unset($this->_invokeParams[$name]);
} elseif (is_array($name)) {
foreach ($name as $key) {
if (is_string($key) && isset($this->_invokeParams[$key])) {
unset($this->_invokeParams[$key]);
}
}
}
return $this;
}
/**
* Register a plugin.
*
* @param Zend_Controller_Plugin_Abstract $plugin
* @param int $stackIndex Optional; stack index for plugin
* @return Zend_Controller_Front
*/
public function registerPlugin(Zend_Controller_Plugin_Abstract $plugin, $stackIndex = null)
{
$this->_plugins->registerPlugin($plugin, $stackIndex);
return $this;
}
/**
* Unregister a plugin.
*
* @param string|Zend_Controller_Plugin_Abstract $plugin Plugin class or object to unregister
* @return Zend_Controller_Front
*/
public function unregisterPlugin($plugin)
{
$this->_plugins->unregisterPlugin($plugin);
return $this;
}
/**
* Is a particular plugin registered?
*
* @param string $class
* @return bool
*/
public function hasPlugin($class)
{
return $this->_plugins->hasPlugin($class);
}
/**
* Retrieve a plugin or plugins by class
*
* @param string $class
* @return false|Zend_Controller_Plugin_Abstract|array
*/
public function getPlugin($class)
{
return $this->_plugins->getPlugin($class);
}
/**
* Retrieve all plugins
*
* @return array
*/
public function getPlugins()
{
return $this->_plugins->getPlugins();
}
/**
* Set the throwExceptions flag and retrieve current status
*
* Set whether exceptions encounted in the dispatch loop should be thrown
* or caught and trapped in the response object.
*
* Default behaviour is to trap them in the response object; call this
* method to have them thrown.
*
* Passing no value will return the current value of the flag; passing a
* boolean true or false value will set the flag and return the current
* object instance.
*
* @param boolean $flag Defaults to null (return flag state)
* @return boolean|Zend_Controller_Front Used as a setter, returns object; as a getter, returns boolean
*/
public function throwExceptions($flag = null)
{
if ($flag !== null) {
$this->_throwExceptions = (bool) $flag;
return $this;
}
return $this->_throwExceptions;
}
/**
* Set whether {@link dispatch()} should return the response without first
* rendering output. By default, output is rendered and dispatch() returns
* nothing.
*
* @param boolean $flag
* @return boolean|Zend_Controller_Front Used as a setter, returns object; as a getter, returns boolean
*/
public function returnResponse($flag = null)
{
if (true === $flag) {
$this->_returnResponse = true;
return $this;
} elseif (false === $flag) {
$this->_returnResponse = false;
return $this;
}
return $this->_returnResponse;
}
/**
* Dispatch an HTTP request to a controller/action.
*
* @param Zend_Controller_Request_Abstract|null $request
* @param Zend_Controller_Response_Abstract|null $response
* @return void|Zend_Controller_Response_Abstract Returns response object if returnResponse() is true
*/
public function dispatch(Zend_Controller_Request_Abstract $request = null, Zend_Controller_Response_Abstract $response = null)
{
if (!$this->getParam('noErrorHandler') && !$this->_plugins->hasPlugin('Zend_Controller_Plugin_ErrorHandler')) {
// Register with stack index of 100
require_once 'Zend/Controller/Plugin/ErrorHandler.php';
$this->_plugins->registerPlugin(new Zend_Controller_Plugin_ErrorHandler(), 100);
}
if (!$this->getParam('noViewRenderer') && !Zend_Controller_Action_HelperBroker::hasHelper('viewRenderer')) {
require_once 'Zend/Controller/Action/Helper/ViewRenderer.php';
Zend_Controller_Action_HelperBroker::getStack()->offsetSet(-80, new Zend_Controller_Action_Helper_ViewRenderer());
}
/**
* Instantiate default request object (HTTP version) if none provided
*/
if (null !== $request) {
$this->setRequest($request);
} elseif ((null === $request) && (null === ($request = $this->getRequest()))) {
require_once 'Zend/Controller/Request/Http.php';
$request = new Zend_Controller_Request_Http();
$this->setRequest($request);
}
/**
* Set base URL of request object, if available
*/
if (is_callable(array($this->_request, 'setBaseUrl'))) {
if (null !== $this->_baseUrl) {
$this->_request->setBaseUrl($this->_baseUrl);
}
}
/**
* Instantiate default response object (HTTP version) if none provided
*/
if (null !== $response) {
$this->setResponse($response);
} elseif ((null === $this->_response) && (null === ($this->_response = $this->getResponse()))) {
require_once 'Zend/Controller/Response/Http.php';
$response = new Zend_Controller_Response_Http();
$this->setResponse($response);
}
/**
* Register request and response objects with plugin broker
*/
$this->_plugins
->setRequest($this->_request)
->setResponse($this->_response);
/**
* Initialize router
*/
$router = $this->getRouter();
$router->setParams($this->getParams());
/**
* Initialize dispatcher
*/
$dispatcher = $this->getDispatcher();
$dispatcher->setParams($this->getParams())
->setResponse($this->_response);
// Begin dispatch
try {
/**
* Route request to controller/action, if a router is provided
*/
/**
* Notify plugins of router startup
*/
$this->_plugins->routeStartup($this->_request);
$router->route($this->_request);
/**
* Notify plugins of router completion
*/
$this->_plugins->routeShutdown($this->_request);
/**
* Notify plugins of dispatch loop startup
*/
$this->_plugins->dispatchLoopStartup($this->_request);
/**
* Attempt to dispatch the controller/action. If the $this->_request
* indicates that it needs to be dispatched, move to the next
* action in the request.
*/
do {
$this->_request->setDispatched(true);
/**
* Notify plugins of dispatch startup
*/
$this->_plugins->preDispatch($this->_request);
/**
* Skip requested action if preDispatch() has reset it
*/
if (!$this->_request->isDispatched()) {
continue;
}
/**
* Dispatch request
*/
try {
$dispatcher->dispatch($this->_request, $this->_response);
} catch (Exception $e) {
if ($this->throwExceptions()) {
throw $e;
}
$this->_response->setException($e);
}
/**
* Notify plugins of dispatch completion
*/
$this->_plugins->postDispatch($this->_request);
} while (!$this->_request->isDispatched());
} catch (Exception $e) {
if ($this->throwExceptions()) {
throw $e;
}
$this->_response->setException($e);
}
/**
* Notify plugins of dispatch loop completion
*/
try {
$this->_plugins->dispatchLoopShutdown();
} catch (Exception $e) {
if ($this->throwExceptions()) {
throw $e;
}
$this->_response->setException($e);
}
if ($this->returnResponse()) {
return $this->_response;
}
$this->_response->sendResponse();
}
}
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