/
DefaultPolicy.class.php
187 lines (163 loc) · 6.93 KB
/
DefaultPolicy.class.php
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<?php
Library::import('recess.framework.controllers.Controller');
Library::import('recess.framework.views.View');
Library::import('recess.framework.interfaces.IPolicy');
class DefaultPolicy implements IPolicy {
protected $controller;
/**
* Used to pre-process a request.
* This may involve extracting information and transforming values.
* For example, Transforming the HTTP method from POST to PUT based on a POSTed field.
*
* @param Request The Request to refine.
* @return Request The refined Request.
*/
public function preprocess(Request &$request) {
$this->getHttpMethodFromPost($request);
$this->getFormatFromResourceString($request);
if($request->format != Formats::xhtml) {
$this->reparameterizeForFormat($request);
}
return $request;
}
public function getControllerFor(Request &$request, array $applications, RoutingNode $routes) {
$routeResult = $routes->findRouteFor($request);
if($routeResult->routeExists) {
if($routeResult->methodIsSupported) {
$controller = $this->getControllerFromRouteResult($request, $routeResult);
} else {
// TODO: Shortwire a result here for a method not supported HTTP response.
throw new RecessError('METHOD not supported.');
}
} else {
$controller = $this->getControllerFromResourceString($request, $applications);
}
$this->controller = $controller;
return $controller;
}
public function getViewFor(Response &$response) {
$view = Library::importAndInstantiate($response->meta->viewClass);
$response->meta->viewDir = $response->meta->app->getViewsDir() . $response->meta->viewPrefix;
return $view;
}
/////////////////////////////////////////////////////////////////////////
// Helper Methods
const HTTP_METHOD_FIELD = '_METHOD';
protected function getHttpMethodFromPost(Request &$request) {
if(array_key_exists(self::HTTP_METHOD_FIELD, $request->post)) {
$request->method = $request->post[self::HTTP_METHOD_FIELD];
unset($request->post[self::HTTP_METHOD_FIELD]);
if($request->method == Methods::PUT) {
$request->put = $request->post;
}
}
return $request;
}
protected function getFormatFromResourceString(Request &$request) {
$lastPartIndex = count($request->resourceParts) - 1;
if($lastPartIndex < 0) return $request;
$lastPart = $request->resourceParts[$lastPartIndex];
$lastDotPosition = strrpos($lastPart, Library::dotSeparator);
if($lastDotPosition !== false) {
$substring = substr($lastPart, $lastDotPosition + 1);
if(in_array($substring, Formats::$all)) {
$request->format = $substring;
$request->setResource(substr($request->resource, 0, strrpos($request->resource, Library::dotSeparator)));
} else {
$request->format = Formats::xhtml;
}
}
return $request;
}
protected function reparameterizeForFormat(Request &$request) {
// TODO: Think about how parameter passing via json/xml/post-vars can be streamlined
if($request->format == Formats::json) {
if(array_key_exists('json', $request->post)){
$request->post = json_decode($request->post['json']);
}
} else if ($request->format == Formats::xml) {
// TODO: XML reparameterization in request transformer
}
return $request;
}
protected function getControllerFromRouteResult(Request &$request, RoutingResult $routeResult) {
$request->meta->app = $routeResult->route->app;
$request->meta->controllerMethod = $routeResult->route->function;
$request->meta->controllerMethodArguments = $routeResult->arguments;
$request->meta->useAssociativeArguments = true;
Library::beginNamedRun($routeResult->route->class);
return Library::importAndInstantiate($routeResult->route->class);
}
protected function getControllerFromResourceString(Request &$request, array $applications) {
$partsCount = count($request->resourceParts);
$prefixes = array_map(create_function('$app','return $app->routingPrefix;'), $applications);
$request->meta->controllerMethodArguments = array();
$request->meta->useAssociativeArguments = false;
// TODO: Clean this up. Throw better errors to reveal internal logic.
switch($partsCount) {
case 0: // DefaultApp, HomeController, home method
$defaultAppKey = array_search('',$prefixes);
if($defaultAppKey !== false) {
$request->meta->controllerMethod = 'home';
$request->meta->app = $applications[$defaultAppKey];
Library::beginNamedRun('HomeController');
return $applications[$defaultAppKey]->getController('HomeController');
}
break;
case 1: //
$appKey = array_search($request->resourceParts[0], $prefixes);
if($appKey !== false) {
$request->meta->controllerMethod = 'home';
$request->meta->app = $applications[$appKey];
Library::beginNamedRun($request->resourceParts[0] . 'Controller');
return $applications[$appKey]->getController('HomeController');
} else {
$defaultAppKey = array_search('',$prefixes);
if($defaultAppKey !== false) {
$request->meta->controllerMethod = 'home';
$request->meta->app = $applications[$defaultAppKey];
Library::beginNamedRun($request->resourceParts[0] . 'Controller');
return $applications[$defaultAppKey]->getController($request->resourceParts[0] . 'Controller');
}
}
break;
case 2:
$appKey = array_search($request->resourceParts[0], $prefixes);
if($appKey !== false) {
$request->meta->controllerMethod = 'home';
$request->meta->app = $applications[$appKey];
Library::beginNamedRun($request->resourceParts[1] . 'Controller');
return $applications[$appKey]->getController($request->resourceParts[1] . 'Controller');
} else {
$defaultAppKey = array_search('',$prefixes);
if($defaultAppKey !== false) {
$request->meta->controllerMethod = $request->resourceParts[1];
$request->meta->app = $applications[$defaultAppKey];
Library::beginNamedRun($request->resourceParts[0] . 'Controller');
return $applications[$defaultAppKey]->getController($request->resourceParts[0] . 'Controller');
}
}
break;
default:
$appKey = array_search($request->resourceParts[0], $prefixes);
if($appKey !== false) {
$request->meta->controllerMethodArguments = array_slice($request->resourceParts,3);
$request->meta->controllerMethod = $request->resourceParts[2];
$request->meta->app = $applications[$appKey];
Library::beginNamedRun($request->resourceParts[1] . 'Controller');
return $applications[$appKey]->getController($request->resourceParts[1] . 'Controller');
} else {
$defaultAppKey = array_search('',$prefixes);
if($defaultAppKey !== false) {
$request->meta->controllerMethodArguments = array_slice($request->resourceParts,2);
$request->meta->controllerMethod = $request->resourceParts[1];
$request->meta->app = $applications[$defaultAppKey];
Library::beginNamedRun($request->resourceParts[0] . 'Controller');
return $applications[$defaultAppKey]->getController($request->resourceParts[0] . 'Controller');
}
}
break;
}
}
}
?>