diff --git a/framework/base/Action.php b/framework/base/Action.php
index 809d3b1..aec3b8d 100644
--- a/framework/base/Action.php
+++ b/framework/base/Action.php
@@ -18,7 +18,7 @@ namespace yii\base;
  * Derived classes must implement a method named `run()`. This method
  * will be invoked by the controller when the action is requested.
  * The `run()` method can have parameters which will be filled up
- * automatically according to their names.
+ * with user input values automatically according to their names.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
diff --git a/framework/base/ActionEvent.php b/framework/base/ActionEvent.php
new file mode 100644
index 0000000..34c440e
--- /dev/null
+++ b/framework/base/ActionEvent.php
@@ -0,0 +1,40 @@
+<?php
+/**
+ * ActionEvent class file.
+ *
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2012 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\base;
+
+/**
+ * ActionEvent represents the event parameter used for an action event.
+ *
+ * By setting the [[isValid]] property, one may control whether to continue the life cycle of
+ * the action currently being executed.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @since 2.0
+ */
+class ActionEvent extends Event
+{
+	/**
+	 * @var Action the action currently being executed
+	 */
+	public $action;
+	/**
+	 * @var boolean whether the action is in valid state and its life cycle should proceed.
+	 */
+	public $isValid = true;
+
+	/**
+	 * Constructor.
+	 * @param Action $action the action associated with this action event.
+	 */
+	public function __construct(Action $action)
+	{
+		$this->action = $action;
+	}
+}
diff --git a/framework/base/ActionFilter.php b/framework/base/ActionFilter.php
index b269492..0da475a 100644
--- a/framework/base/ActionFilter.php
+++ b/framework/base/ActionFilter.php
@@ -9,66 +9,84 @@
 
 namespace yii\base;
 
+use yii\util\ArrayHelper;
+
 /**
- * ActionFilter is the base class for all filters.
+ * ActionFilter is the base class for all action filters.
+ *
+ * A filter can be applied to a controller action at different stages of its life cycle. In particular,
+ * it responds to the following events that are raised when an action is being executed:
  *
- * A filter can be applied before and after an action is executed.
- * It can modify the context that the action is to run or decorate the result that the
- * action generates.
+ * 1. authorize
+ * 2. beforeAction
+ * 3. beforeRender
+ * 4. afterRender
+ * 5. afterAction
  *
- * Override {@link preFilter()} to specify the filtering logic that should be applied
- * before the action, and {@link postFilter()} for filtering logic after the action.
+ * Derived classes may respond to these events by overriding the corresponding methods in this class.
+ * For example, to create an access control filter, one may override the [[authorize()]] method.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */
-class ActionFilter extends CComponent implements IFilter
+class ActionFilter extends Behavior
 {
 	/**
-	 * Performs the filtering.
-	 * The default implementation is to invoke {@link preFilter}
-	 * and {@link postFilter} which are meant to be overridden
-	 * child classes. If a child class needs to override this method,
-	 * make sure it calls <code>$filterChain->run()</code>
-	 * if the action should be executed.
-	 * @param ActionFilterChain $filterChain the filter chain that the filter is on.
+	 * @var Controller the owner of this behavior. For action filters, this should be a controller object.
 	 */
-	public function filter($filterChain)
-	{
-		if($this->preFilter($filterChain))
-		{
-			$filterChain->run();
-			$this->postFilter($filterChain);
-		}
-	}
-
+	public $owner;
+	/**
+	 * @var array IDs (case-insensitive) of actions that this filter applies to.
+	 * If this property is empty or not set, it means this filter applies to all actions.
+	 * Note that if an action appears in [[except]], the filter will not apply to this action, even
+	 * if the action also appears in [[only]].
+	 * @see exception
+	 */
+	public $only;
 	/**
-	 * Initializes the filter.
-	 * This method is invoked after the filter properties are initialized
-	 * and before {@link preFilter} is called.
-	 * You may override this method to include some initialization logic.
-	 * @since 1.1.4
+	 * @var array IDs (case-insensitive) of actions that this filter does NOT apply to.
 	 */
+	public $except;
+
 	public function init()
 	{
+		$this->owner->on('authorize', array($this, 'handleEvent'));
+		$this->owner->on('beforeAction', array($this, 'handleEvent'));
+		$this->owner->on('beforeRender', array($this, 'handleEvent'));
+		$this->owner->getEventHandlers('afterRender')->insertAt(0, array($this, 'handleEvent'));
+		$this->owner->getEventHandlers('afterAction')->insertAt(0, array($this, 'handleEvent'));
 	}
 
-	/**
-	 * Performs the pre-action filtering.
-	 * @param ActionFilterChain $filterChain the filter chain that the filter is on.
-	 * @return boolean whether the filtering process should continue and the action
-	 * should be executed.
-	 */
-	protected function preFilter($filterChain)
+	public function authorize(ActionEvent $event)
 	{
-		return true;
 	}
 
-	/**
-	 * Performs the post-action filtering.
-	 * @param ActionFilterChain $filterChain the filter chain that the filter is on.
-	 */
-	protected function postFilter($filterChain)
+	public function beforeAction(ActionEvent $event)
+	{
+	}
+
+	public function beforeRender(ActionEvent $event)
+	{
+	}
+
+	public function afterRender(ActionEvent $event)
+	{
+	}
+
+	public function afterAction(ActionEvent $event)
+	{
+	}
+
+	public function handleEvent(ActionEvent $event)
+	{
+		if ($this->applyTo($event->action)) {
+			$this->{$event->name}($event);
+		}
+	}
+
+	public function applyTo(Action $action)
 	{
+		return (empty($this->only) || ArrayHelper::search($action->id, $this->only, false) !== false)
+			&& (empty($this->except) || ArrayHelper::search($action->id, $this->except, false) === false);
 	}
 }
\ No newline at end of file
diff --git a/framework/base/Behavior.php b/framework/base/Behavior.php
index d65fe91..f0c87a4 100644
--- a/framework/base/Behavior.php
+++ b/framework/base/Behavior.php
@@ -16,17 +16,15 @@ namespace yii\base;
  * In particular, it can "inject" its own methods and properties into the component
  * and make them directly accessible via the component.
  *
- * @property Component $owner The owner component that this behavior is attached to.
- *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */
 class Behavior extends \yii\base\Object
 {
 	/**
-	 * @var Component the owner component
+	 * @var Component the owner of this behavior
 	 */
-	private $_owner;
+	public $owner;
 
 	/**
 	 * Declares event handlers for the [[owner]]'s events.
@@ -70,7 +68,7 @@ class Behavior extends \yii\base\Object
 	 */
 	public function attach($owner)
 	{
-		$this->_owner = $owner;
+		$this->owner = $owner;
 		foreach ($this->events() as $event => $handler) {
 			$owner->on($event, is_string($handler) ? array($this, $handler) : $handler);
 		}
@@ -88,15 +86,6 @@ class Behavior extends \yii\base\Object
 		foreach ($this->events() as $event => $handler) {
 			$owner->off($event, is_string($handler) ? array($this, $handler) : $handler);
 		}
-		$this->_owner = null;
-	}
-
-	/**
-	 * Returns the owner component that this behavior is attached to.
-	 * @return Component the owner component that this behavior is attached to.
-	 */
-	public function getOwner()
-	{
-		return $this->_owner;
+		$this->owner = null;
 	}
 }
diff --git a/framework/base/Component.php b/framework/base/Component.php
index ac08315..0cf90d8 100644
--- a/framework/base/Component.php
+++ b/framework/base/Component.php
@@ -450,6 +450,9 @@ class Component extends \yii\base\Object
 		if (!($behavior instanceof Behavior)) {
 			$behavior = \Yii::createObject($behavior);
 		}
+		if (is_int($name)) {
+			$name = '_b ' . $name; // anonymous behavior
+		}
 		if (isset($this->_b[$name])) {
 			$this->_b[$name]->detach($this);
 		}
diff --git a/framework/base/Controller.php b/framework/base/Controller.php
index 05b568e..7f73bfc 100644
--- a/framework/base/Controller.php
+++ b/framework/base/Controller.php
@@ -71,7 +71,10 @@ abstract class Controller extends Component implements Initable
 	public $defaultAction = 'index';
 
 	private $_id;
-	private $_action;
+	/**
+	 * @var Action the action that is currently being executed
+	 */
+	public $action;
 	private $_module;
 
 
@@ -95,38 +98,6 @@ abstract class Controller extends Component implements Initable
 	}
 
 	/**
-	 * Returns the filter configurations.
-	 *
-	 * By overriding this method, child classes can specify filters to be applied to actions.
-	 *
-	 * This method returns an array of filter specifications. Each array element specify a single filter.
-	 *
-	 * For a method-based filter (called inline filter), it is specified as 'FilterName[ +|- Action1, Action2, ...]',
-	 * where the '+' ('-') operators describe which actions should be (should not be) applied with the filter.
-	 *
-	 * For a class-based filter, it is specified as an array like the following:
-	 * <pre>
-	 * array(
-	 *	 'FilterClass[ +|- Action1, Action2, ...]',
-	 *	 'name1'=>'value1',
-	 *	 'name2'=>'value2',
-	 *	 ...
-	 * )
-	 * </pre>
-	 * where the name-value pairs will be used to initialize the properties of the filter.
-	 *
-	 * Note, in order to inherit filters defined in the parent class, a child class needs to
-	 * merge the parent filters with child filters using functions like array_merge().
-	 *
-	 * @return array a list of filter configurations.
-	 * @see CFilter
-	 */
-	public function filters()
-	{
-		return array();
-	}
-
-	/**
 	 * Returns a list of external action classes.
 	 * Array keys are action IDs, and array values are the corresponding
 	 * action class in dot syntax (e.g. 'edit'=>'application.controllers.article.EditArticle')
@@ -182,16 +153,6 @@ abstract class Controller extends Component implements Initable
 	}
 
 	/**
-	 * Returns the access rules for this controller.
-	 * Override this method if you use the {@link filterAccessControl accessControl} filter.
-	 * @return array list of access rules. See {@link CAccessControlFilter} for details about rule specification.
-	 */
-	public function accessRules()
-	{
-		return array();
-	}
-
-	/**
 	 * Runs the named action.
 	 * Filters specified via {@link filters()} will be applied.
 	 * @param string $actionID action ID
@@ -234,10 +195,10 @@ abstract class Controller extends Component implements Initable
 		}
 		else
 		{
-			$priorAction = $this->_action;
-			$this->_action = $action;
+			$priorAction = $this->action;
+			$this->action = $action;
 			CFilterChain::create($this, $action, $filters)->run();
-			$this->_action = $priorAction;
+			$this->action = $priorAction;
 		}
 	}
 
@@ -249,8 +210,8 @@ abstract class Controller extends Component implements Initable
 	 */
 	public function runAction($action)
 	{
-		$priorAction = $this->_action;
-		$this->_action = $action;
+		$priorAction = $this->action;
+		$this->action = $action;
 		if ($this->beforeAction($action)) {
 			if ($action->runWithParams($this->getActionParams())) {
 				$this->afterAction($action);
@@ -258,7 +219,7 @@ abstract class Controller extends Component implements Initable
 				$this->invalidActionParams($action);
 			}
 		}
-		$this->_action = $priorAction;
+		$this->action = $priorAction;
 	}
 
 	/**
@@ -384,22 +345,6 @@ abstract class Controller extends Component implements Initable
 	}
 
 	/**
-	 * @return Action the action currently being executed, null if no active action.
-	 */
-	public function getAction()
-	{
-		return $this->_action;
-	}
-
-	/**
-	 * @param Action $value the action currently being executed.
-	 */
-	public function setAction($value)
-	{
-		$this->_action = $value;
-	}
-
-	/**
 	 * @return string ID of the controller
 	 */
 	public function getId()
@@ -467,14 +412,28 @@ abstract class Controller extends Component implements Initable
 	}
 
 	/**
+	 * This method is invoked when checking the access for the action to be executed.
+	 * @param Action $action the action to be executed.
+	 * @return boolean whether the action is allowed to be executed.
+	 */
+	public function authorize(Action $action)
+	{
+		$event = new ActionEvent($action);
+		$this->trigger(__METHOD__, $event);
+		return $event->isValid;
+	}
+
+	/**
 	 * This method is invoked right before an action is to be executed (after all possible filters.)
 	 * You may override this method to do last-minute preparation for the action.
 	 * @param Action $action the action to be executed.
-	 * @return boolean whether the action should be executed.
+	 * @return boolean whether the action should continue to be executed.
 	 */
-	protected function beforeAction($action)
+	public function beforeAction(Action $action)
 	{
-		return true;
+		$event = new ActionEvent($action);
+		$this->trigger(__METHOD__, $event);
+		return $event->isValid;
 	}
 
 	/**
@@ -482,7 +441,31 @@ abstract class Controller extends Component implements Initable
 	 * You may override this method to do some postprocessing for the action.
 	 * @param Action $action the action just executed.
 	 */
-	protected function afterAction($action)
+	public function afterAction(Action $action)
+	{
+		$event = new ActionEvent($action);
+		$this->trigger(__METHOD__, $event);
+	}
+
+	/**
+	 * This method is invoked right before an action renders its result using [[render()]].
+	 * @param Action $action the action to be executed.
+	 * @return boolean whether the action should continue to render.
+	 */
+	public function beforeRender(Action $action)
+	{
+		$event = new ActionEvent($action);
+		$this->trigger(__METHOD__, $event);
+		return $event->isValid;
+	}
+
+	/**
+	 * This method is invoked right after an action renders its result using [[render()]].
+	 * @param Action $action the action just executed.
+	 */
+	public function afterRender(Action $action)
 	{
+		$event = new ActionEvent($action);
+		$this->trigger(__METHOD__, $event);
 	}
 }
diff --git a/framework/base/View.php b/framework/base/View.php
index d6749e0..e60d9cc 100644
--- a/framework/base/View.php
+++ b/framework/base/View.php
@@ -39,6 +39,10 @@ class View extends Component
 	 * the value of [[Application::sourceLanguage]].
 	 */
 	public $sourceLanguage;
+	/**
+	 * @var mixed custom parameters that are available in the view template
+	 */
+	public $params;
 
 	/**
 	 * Renders a view.
diff --git a/framework/db/dao/Command.php b/framework/db/dao/Command.php
index 619b723..41601ce 100644
--- a/framework/db/dao/Command.php
+++ b/framework/db/dao/Command.php
@@ -354,7 +354,7 @@ class Command extends \yii\base\Component
 		}
 
 		\Yii::trace("Querying SQL: {$sql}{$paramLog}", __CLASS__);
-//echo $sql . "\n\n";
+
 		if ($db->queryCachingCount > 0 && $db->queryCachingDuration >= 0 && $method !== '') {
 			$cache = \Yii::$application->getComponent($db->queryCacheID);
 		}
diff --git a/framework/util/ArrayHelper.php b/framework/util/ArrayHelper.php
index dc4fe97..07a7ac5 100644
--- a/framework/util/ArrayHelper.php
+++ b/framework/util/ArrayHelper.php
@@ -208,4 +208,31 @@ class ArrayHelper extends \yii\base\Component
 		}
 		return $result;
 	}
+
+	/**
+	 * Searches the array for a given value and returns the corresponding key if found.
+	 * This method is similar to array_search() with the enhancement that it can also
+	 * search for strings in a case-insensitive manner.
+	 * @param mixed $needle the value being searched for
+	 * @param array $haystack the array to be searched through
+	 * @param boolean $caseSensitive whether to perform a case-sensitive search
+	 * @param boolean $strict whether to perform a type-strict search
+	 * @return boolean|mixed the key of the value if it matches $needle. False if the value is not found.
+	 */
+	public static function search($needle, array $haystack, $caseSensitive = true, $strict = true)
+	{
+		if ($caseSensitive || !is_string($needle)) {
+			return array_search($needle, $haystack, $strict);
+		}
+		foreach ($haystack as $key => $value) {
+			if (is_string($value)) {
+				if (strcasecmp($value, $needle) === 0) {
+					return true;
+				}
+			} elseif ($strict && $key === $value || !$strict && $key == $value) {
+				return true;
+			}
+		}
+		return false;
+	}
 }
\ No newline at end of file