/**
* Parses the url, and dispatches to the appropriate controller.
* @param bool $skipControllerInitialization
*/
public function dispatch($skipControllerInitialization = false)
{
Profile::start('Dispatcher', 'Dispatching');
$contentTypes = array();
try {
$controllerName = isset($_GET['controller']) ? trim($_GET['controller']) : $this->defaultControllerName;
$controllerName = $this->controllerFromUrlSanitizer->sanitize($controllerName);
$invalidControllerName = false;
try {
$controller = $this->controllerFactory->get($controllerName);
} catch (ControllerFactoryException $e) {
// Not failing just yet, so the model gets initialized.
$invalidControllerName = true;
$controller = $this->controllerFactory->get($this->defaultControllerName);
}
$model = new Model();
$controller->setModel($model);
$controller->initModel();
$contentTypes = $this->getAcceptContentTypes($_SERVER['HTTP_ACCEPT']);
try {
if ($invalidControllerName) {
ErrorCode::notFound();
}
try {
$errorDuringRender = null;
$errorCode = null;
// Try to dispatch to the actual action.
$actionParameters = explode('/', isset($_GET['action']) ? $_GET['action'] : 'index');
$action = $actionParameters[0];
array_shift($actionParameters);
if ($action[0] === '_') {
throw new ErrorCode(ErrorCode::NOT_FOUND, 'Tried to access action with underscore.');
}
$action = $this->actionFromUrlSanitizer->sanitize($action);
try {
// Check if the action is valid
$reflectionClass = new ReflectionClass($controller);
$actionMethod = $reflectionClass->getMethod($action);
if ($action !== 'index' && (method_exists('Controller', $action) || !$actionMethod->isPublic() || $actionMethod->class !== get_class($controller))) {
throw new DispatcherException();
}
} catch (Exception $e) {
throw new ErrorCode(ErrorCode::NOT_FOUND, 'Tried to access invalid action.');
}
$controller->setAction($action);
$parameters = array();
$stringParameters = array();
$i = 0;
foreach ($actionMethod->getParameters() as $parameter) {
$actionParameter = isset($actionParameters[$i]) ? $actionParameters[$i] : null;
if ($actionParameter === null) {
if (!$parameter->isDefaultValueAvailable()) {
throw new ErrorCode(ErrorCode::BAD_REQUEST, 'Not all parameters supplied.');
}
// Well: there is no more additional query, and apparently the rest of the parameters are optional, so continue.
continue;
}
if (($parameterTypeClass = $parameter->getClass()) != false) {
if (!$parameterTypeClass->isSubclassOf('RW_Type')) {
throw new ErrorCode(ErrorCode::BAD_REQUEST, 'Invalid parameter type.');
}
$parameterTypeClassName = $parameterTypeClass->getName();
$parameters[] = new $parameterTypeClassName($actionParameter);
} else {
$parameters[] = $actionParameter;
}
$stringParameters[] = $actionParameter;
$i++;
}
$controller->setActionParameters($stringParameters);
if (!$skipControllerInitialization) {
$controller->initialize();
}
// This actually calls the apropriate action.
call_user_func_array(array($controller, $action), $parameters);
$controller->extendModel();
try {
$this->renderers->render($controller->getViewName(), $model, $this->notificationCenter, $this->theme->getTemplatesPath(), $contentTypes, $controller);
} catch (Exception $e) {
throw new ErrorCode(ErrorCode::INTERNAL_SERVER_ERROR, 'Error during render: ' . $e->getMessage());
}
} catch (ErrorMessageException $e) {
$errorDuringRender = true;
$this->notificationCenter->addError($e->getMessage());
} catch (ErrorCode $e) {
throw $e;
} catch (Exception $e) {
$additionalInfo = array();
$additionalInfo['controllerName'] = $controllerName;
if (isset($action)) {
$additionalInfo['action'] = $action;
}
$additionalInfo['exceptionThrown'] = get_class($e);
$additionalInfo['error'] = $e->getMessage();
Log::warning($e->getMessage(), 'Dispatcher', $additionalInfo);
throw new ErrorCode(ErrorCode::INTERNAL_SERVER_ERROR);
}
} catch (ErrorCode $e) {
// All other exceptions have already been caught.
$errorDuringRender = true;
$errorCode = $e->getCode();
$e->writeHttpHeader();
if ($e->getMessage()) {
Log::debug($e->getMessage(), 'Dispatcher');
}
}
if ($errorDuringRender) {
$this->renderers->renderError($errorCode, $model, $this->notificationCenter, $this->theme->getTemplatesPath(), $contentTypes);
}
} catch (Exception $e) {
try {
Log::fatal('There has been a fatal error dispatching.', 'Dispatcher', array('error' => $e->getMessage()));
$this->renderers->renderFatalError($this->notificationCenter, $this->theme->getTemplatesPath(), $contentTypes);
} catch (Exception $e) {
die('<h1 class="error">Fatal error...</h1>');
}
}
Profile::stop();
}
