web/Zend/Controller/Action.php
changeset 0 4eba9c11703f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Controller/Action.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,688 @@
+<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Action.php 22792 2010-08-05 18:30:27Z matthew $
+ */
+
+/**
+ * @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) 2005-2010 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 || '' === $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);
+    }
+}