draft idea of action based responses

framework/yii/base/Action.php

@@ -7,6 +7,8 @@
 
 namespace yii\base;
 
+use Yii;
+
 /**
  * Action is the base class for all controller action classes.
  *
@@ -40,6 +42,21 @@ class Action extends Component
 	 */
 	public $controller;
 
+	private $_response;
+
+	public function getResponse()
+	{
+		if ($this->_response === null) {
+			$this->_response = Yii::$app->createResponse();
+		}
+		return $this->_response;
+	}
+
+	public function setResponse($response)
+	{
+		$this->_response = $response;
+	}
+
 	/**
 	 * Constructor.
 	 * @param string $id the ID of this action
@@ -75,6 +92,8 @@ class Action extends Component
 			throw new InvalidConfigException(get_class($this) . ' must define a "run()" method.');
 		}
 		$args = $this->controller->bindActionParams($this, $params);
-		return call_user_func_array(array($this, 'run'), $args);
+		$response = $this->getResponse();
+		$response->result = call_user_func_array(array($this, 'run'), $args);
+		return $response;
 	}
 }

framework/yii/base/Application.php

@@ -155,6 +155,7 @@ abstract class Application extends Module
 	 */
 	abstract public function handleRequest($request);
 
+	public abstract function createResponse();
 
 	private $_runtimePath;
 

framework/yii/base/Controller.php

@@ -111,6 +111,7 @@ class Controller extends Component
 			$oldAction = $this->action;
 			$this->action = $action;
 			$result = null;
+			// TODO beforeAction may also create a response somehow.
 			if ($this->module->beforeAction($action)) {
 				if ($this->beforeAction($action)) {
 					$result = $action->runWithParams($params);

framework/yii/base/InlineAction.php

@@ -44,6 +44,8 @@ class InlineAction extends Action
 	public function runWithParams($params)
 	{
 		$args = $this->controller->bindActionParams($this, $params);
-		return call_user_func_array(array($this->controller, $this->actionMethod), $args);
+		$response = $this->getResponse();
+		$response->result = call_user_func_array(array($this->controller, $this->actionMethod), $args);
+		return $response;
 	}
 }

framework/yii/console/Application.php

@@ -93,22 +93,18 @@ class Application extends \yii\base\Application
 	{
 		list ($route, $params) = $request->resolve();
 		$result = $this->runAction($route, $params);
-		if ($result instanceof Response) {
-			return $result;
-		} else {
 		$response = $this->getResponse();
 		$response->exitStatus = (int)$result;
 		return $response;
 	}
-	}
 
 	/**
 	 * Returns the response component.
 	 * @return Response the response component
 	 */
-	public function getResponse()
+	public function createResponse()
 	{
-		return $this->getComponent('response');
+		return new Response();
 	}
 
 	/**

framework/yii/web/Application.php

@@ -65,16 +65,8 @@ class Application extends \yii\base\Application
 			$params = array_splice($this->catchAll, 1);
 		}
 		try {
-			$result = $this->runAction($route, $params);
-			if ($result instanceof Response) {
-				return $result;
-			} else {
-				$response = $this->getResponse();
-				if ($result !== null) {
-					$response->setContent($result);
-				}
+			$response = $this->runAction($route, $params);
 			return $response;
-			}
 		} catch (InvalidRouteException $e) {
 			throw new HttpException(404, $e->getMessage(), $e->getCode(), $e);
 		}
@@ -119,9 +111,9 @@ class Application extends \yii\base\Application
 	 * Returns the response component.
 	 * @return Response the response component
 	 */
-	public function getResponse()
+	public function createResponse()
 	{
-		return $this->getComponent('response');
+		return new Response();
 	}
 
 	/**