...

docs/api/framework/base/Component.md

+Component provides the *event* and *behavior* features, in addition to the *property* feature which is implemented in
+its parent class [[Object]].
+
+Event is a way to "inject" custom code into existing code at certain places. For example, a comment object can trigger
+an "add" event when the user adds a comment. We can write custom code and attach it to this event so that when the event
+is triggered, our custom code will be executed.
+
+An event is identified by a name (unique within the class it is defined). Event names are *case-sensitive*.
+
+An event can be attached with one or multiple PHP callbacks, called *event handlers*. One can call [[trigger()]] to
+raise an event. When an event is raised, the attached event handlers will be invoked automatically in the order they are
+attached to the event.
+
+To attach an event handler to an event, call [[on()]]. For example,
+
+~~~
+$comment->on('add', function($event) {
+    // send email notification
+});
+~~~
+
+In the above, we attach an anonymous function to the "add" event of the comment. Valid event handlers include:
+
+- anonymous function: `function($event) { ... }`
+- object method: `array($object, 'handleAdd')`
+- static method: `array('Page', 'handleAdd')`
+- global function: `'handleAdd'`
+
+The signature of an event handler should be like the following:
+
+~~~
+function foo($event)
+~~~
+
+where `$event` is an [[Event]] object which includes parameters associated with the event.
+
+One can also attach an event handler to an event when configuring a component with a configuration array. The syntax is
+like the following:
+
+~~~
+array(
+    'on add' => function($event) { ... }
+)
+~~~
+
+where `on add` stands for attaching an event to the `add` event.
+
+One can call [[getEventHandlers()]] to retrieve all event handlers that are attached to a specified event. Because this
+method returns a [[Vector]] object, we can manipulate this object to attach/detach event handlers, or adjust their
+relative orders.
+
+~~~
+$handlers = $comment->getEventHandlers('add');
+$handlers->insertAt(0, $callback); // attach a handler as the first one
+$handlers[] = $callback;           // attach a handler as the last one
+unset($handlers[0]);               // detach the first handler
+~~~
+
+
+A behavior is an instance of [[Behavior]] or its child class. A component can be attached with one or multiple
+behaviors. When a behavior is attached to a component, its public properties and methods can be accessed via the
+component directly, as if the component owns those properties and methods.
+
+To attach a behavior to a component, declare it in [[behaviors()]], or explicitly call [[attachBehavior]]. Behaviors
+declared in [[behaviors()]] are automatically attached to the corresponding component.
+
+One can also attach a behavior to a component when configuring it with a configuration array. The syntax is like the
+following:
+
+~~~
+array(
+    'as tree' => array(
+        'class' => 'Tree',
+    ),
+)
+~~~
+
+where `as tree` stands for attaching a behavior named `tree`, and the array will be passed to [[\Yii::createObject()]]
+to create the behavior object.
\ No newline at end of file

docs/api/framework/base/Object.md

+A property is defined by a getter method (e.g. `getLabel`), and/or a setter method (e.g. `setLabel`). For example,
+the following getter and setter methods define a property named `label`:
+
+~~~
+private $_label;
+
+public function getLabel()
+{
+    return $this->_label;
+}
+
+public function setLabel($value)
+{
+    $this->_label = $value;
+}
+~~~
+
+Property names are *case-insensitive*.
+
+A property can be accessed like a member variable of an object. Reading or writing a property will cause the invocation
+of the corresponding getter or setter method. For example,
+
+~~~
+// equivalent to $label = $object->getLabel();
+$label = $object->label;
+// equivalent to $object->setLabel('abc');
+$object->label = 'abc';
+~~~
+
+If a property has only a getter method and has no setter method, it is considered as *read-only*. In this case, trying
+to modify the property value will cause an exception.
+
+One can call [[hasProperty]], [[canGetProperty]] and/or [[canSetProperty]] to check the existence of a property.
+
+Besides the property feature, the Object class defines a static method [[create]] which provides a convenient
+alternative way of creating a new object instance.
+
+The Object class also defines the [[evaluateExpression]] method so that a PHP expression or callback can be dynamically
+evaluated within the context of an object.
\ No newline at end of file

framework/base/Behavior.php

@@ -12,7 +12,7 @@ namespace yii\base;
 /**
  * Behavior is the base class for all behavior classes.
  *
- * A behavior can be used to enhance the functionality of an existing component.
+ * A behavior can be used to enhance the functionality of an existing component without modifying its code.
  * In particular, it can "inject" its own methods and properties into the component
  * and make them directly accessible via the component.
  *
@@ -52,7 +52,7 @@ class Behavior extends \yii\base\Object
 	 * )
 	 * ~~~
 	 *
-	 * @return array events (keys) and the corresponding behavior method names (values).
+	 * @return array events (array keys) and the corresponding event handler methods (array values).
 	 */
 	public function events()
 	{

framework/base/Component.php

@@ -10,65 +10,9 @@
 namespace yii\base;
 
 /**
- * Component is the base class for all component classes in Yii.
+ * Component is the base class that provides the *property*, *event* and *behavior* features.
  *
- * Component provides the *event* and *behavior* features, in addition to
- * the *property* feature which is implemented in its parent class [[Object]].
- *
- * Event is a way to "inject" custom code into existing code at certain places.
- * For example, a comment object can trigger an "add" event when the user adds
- * a comment. We can write custom code and attach it to this event so that
- * when the event is triggered, our custom code will be executed.
- *
- * An event is identified by a name (unique within the class it is defined).
- * Event names are *case-sensitive*.
- *
- * An event can be attached with one or multiple PHP callbacks, called *event handlers*.
- * One can call [[trigger()]] to raise an event. When an event is raised, the attached
- * event handlers will be invoked automatically in the order they are attached to the event.
- *
- * To attach an event handler to an event, call [[on()]]. For example,
- *
- * ~~~
- * $comment->on('add', function($event) {
- *     // send email notification
- * });
- * ~~~
- *
- * In the above, we attach an anonymous function to the "add" event of the comment.
- * Valid event handlers include:
- *
- * - anonymous function: `function($event) { ... }`
- * - object method: `array($object, 'handleAdd')`
- * - static method: `array('Page', 'handleAdd')`
- * - global function: `'handleAdd'`
- *
- * The signature of an event handler should be like the following:
- * ~~~
- * function foo($event)
- * ~~~
- *
- * where `$event` is an [[Event]] object which includes parameters associated with the event.
- *
- * One can call [[getEventHandlers()]] to retrieve all event handlers that are attached
- * to a specified event. Because this method returns a [[Vector]] object, we can manipulate
- * this object to attach/detach event handlers, or adjust their relative orders.
- *
- * ~~~
- * $handlers = $comment->getEventHandlers('add');
- * $handlers->insertAt(0, $callback); // attach a handler as the first one
- * $handlers[] = $callback;           // attach a handler as the last one
- * unset($handlers[0]);               // detach the first handler
- * ~~~
- *
- *
- * A behavior is an instance of [[Behavior]] or its child class. A component can be attached
- * with one or multiple behaviors. When a behavior is attached to a component, its public
- * properties and methods can be accessed via the component directly, as if the component owns
- * those properties and methods.
- *
- * To attach a behavior to a component, declare it in [[behaviors()]], or explicitly call [[attachBehavior]].
- * Behaviors declared in [[behaviors()]] are automatically attached to the corresponding component.
+ * @include @yii/base/Component.md
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
@@ -134,13 +78,19 @@ class Component extends \yii\base\Object
 	public function __set($name, $value)
 	{
 		$setter = 'set' . $name;
-		if (method_exists($this, $setter)) { // write property
+		if (method_exists($this, $setter)) {
+			// set property
 			$this->$setter($value);
 			return;
-		} elseif (strncmp($name, 'on ', 3) === 0) { // on event
+		} elseif (strncmp($name, 'on ', 3) === 0) {
+			// on event: attach event handler
 			$name = trim(substr($name, 3));
 			$this->getEventHandlers($name)->add($value);
 			return;
+		} elseif (strncmp($name, 'as ', 3) === 0) {
+			// as behavior: attach behavior
+			$name = trim(substr($name, 3));
+			$this->attachBehavior($name, \Yii::createObject($value));
 		} else { // behavior property
 			$this->ensureBehaviors();
 			foreach ($this->_b as $behavior) {
@@ -394,7 +344,7 @@ class Component extends \yii\base\Object
 	 * @param string $behavior the behavior name
 	 * @return Behavior the behavior object, or null if the behavior does not exist
 	 */
-	public function asa($behavior)
+	public function getBehavior($behavior)
 	{
 		$this->ensureBehaviors();
 		return isset($this->_b[$behavior]) ? $this->_b[$behavior] : null;
@@ -493,6 +443,9 @@ class Component extends \yii\base\Object
 		if (!($behavior instanceof Behavior)) {
 			$behavior = \Yii::createObject($behavior);
 		}
+		if (isset($this->_b[$name])) {
+			$this->_b[$name]->detach($this);
+		}
 		$behavior->attach($this);
 		return $this->_b[$name] = $behavior;
 	}

framework/base/Dictionary.php

@@ -13,9 +13,9 @@ namespace yii\base;
  * Dictionary implements a collection that stores key-value pairs.
  *
  * You can access, add or remove an item with a key by using
- * [[itemAt]], [[add]], and [[remove]].
+ * [[itemAt()]], [[add()]], and [[remove()]].
  *
- * To get the number of the items in the dictionary, use [[getCount]].
+ * To get the number of the items in the dictionary, use [[getCount()]].
  *
  * Because Dictionary implements a set of SPL interfaces, it can be used
  * like a regular PHP array as follows,
@@ -28,6 +28,8 @@ namespace yii\base;
  * $n = count($dictionary);			  // returns the number of items in the dictionary
  * ~~~
  *
+ * @property integer $count the number of items in the dictionary
+ *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */

framework/base/Event.php

@@ -17,17 +17,16 @@ namespace yii\base;
  * And the [[handled]] property indicates if the event is handled.
  * If an event handler sets [[handled]] to be true, the rest of the
  * uninvoked handlers will no longer be called to handle the event.
- * Additionally, an event may specify extra parameters via the [[params]] property.
+ * Additionally, an event may specify extra parameters via the [[data]] property.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */
-class Event extends Object
+class Event extends \yii\base\Object
 {
 	/**
-	 * @var string the event name. This property is set by [[Component::raiseEvent]].
+	 * @var string the event name. This property is set by [[Component::trigger()]].
 	 * Event handlers may use this property to check what event it is handling.
-	 * The event name is in lower case.
 	 */
 	public $name;
 	/**
@@ -41,19 +40,19 @@ class Event extends Object
 	 */
 	public $handled = false;
 	/**
-	 * @var mixed extra parameters associated with the event.
+	 * @var mixed extra data associated with the event.
 	 */
-	public $params;
+	public $data;
 
 	/**
 	 * Constructor.
 	 *
 	 * @param mixed $sender sender of the event
-	 * @param mixed $params parameters of the event
+	 * @param mixed $data extra data associated with the event
 	 */
-	public function __construct($sender = null, $params = null)
+	public function __construct($sender = null, $data = null)
 	{
 		$this->sender = $sender;
-		$this->params = $params;
+		$this->data = $data;
 	}
 }

framework/base/Initable.php

@@ -12,9 +12,9 @@ namespace yii\base;
 /**
  * Initable is an interface indicating a class needs initialization to work properly.
  *
- * Initable requires a class to implement the [[init]] method.
- * When [[\Yii::createObject]] is being used to create a new component which implements
- * Initable, it will call the [[init]] method after setting the initial values of the
+ * Initable requires a class to implement the [[init()]] method.
+ * When [[\Yii::createObject()]] is being used to create a new component which implements
+ * Initable, it will call the [[init()]] method after setting the initial values of the
  * component properties.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>

framework/base/Model.php

@@ -222,6 +222,7 @@ class Model extends Component implements \IteratorAggregate, \ArrayAccess
 	 */
 	public function afterValidate()
 	{
+		$this->trigger('afterValidate');
 		if ($this->hasEventHandlers('onAfterValidate')) {
 			$this->onAfterValidate(new Event($this));
 		}

framework/base/ModelBehavior.php

@@ -21,7 +21,7 @@ namespace yii\base;
 class ModelBehavior extends Behavior
 {
 	/**
-	 * Declares event handlers for owner's events.
+	 * Declares event handlers for the owner's events.
 	 * The default implementation returns the following event handlers:
 	 *
 	 * - `beforeValidate` event
@@ -39,8 +39,8 @@ class ModelBehavior extends Behavior
 	}
 
 	/**
-	 * Responds to [[Model::onBeforeValidate]] event.
-	 * Override this method if you want to handle the corresponding event of the [[owner]].
+	 * Responds to the owner's `beforeValidate` event.
+	 * Override this method if you want to handle the `beforeValidate` event of the [[owner]].
 	 * You may set the [[ModelEvent::isValid|isValid]] property of the event parameter
 	 * to be false to cancel the validation process.
 	 * @param ModelEvent $event event parameter
@@ -50,8 +50,8 @@ class ModelBehavior extends Behavior
 	}
 
 	/**
-	 * Responds to [[Model::onAfterValidate]] event.
-	 * Override this method if you want to handle the corresponding event of the [[owner]].
+	 * Responds to the owner's `afterValidate` event.
+	 * Override this method if you want to handle the `beforeValidate` event of the [[owner]].
 	 * @param Event $event event parameter
 	 */
 	public function afterValidate($event)

framework/base/ModelEvent.php

@@ -21,7 +21,7 @@ class ModelEvent extends Event
 {
 	/**
 	 * @var boolean whether the model is in valid status. Defaults to true.
-	 * A model is in valid status if it passes validation, or other checks.
+	 * A model is in valid status if it passes validations or certain checks.
 	 */
 	public $isValid = true;
 }

framework/base/Object.php

@@ -10,52 +10,9 @@
 namespace yii\base;
 
 /**
- * Object is the base class that implements the *property* feature.
+ * Object is the base class that provides the *property* feature.
  *
- * A property is defined by a getter method (e.g. `getLabel`),
- * and/or a setter method (e.g. `setLabel`). For example, the following
- * getter and setter methods define a property named `label`:
- *
- * ~~~
- * private $_label;
- *
- * public function getLabel()
- * {
- *	 return $this->_label;
- * }
- *
- * public function setLabel($value)
- * {
- *	 $this->_label = $value;
- * }
- * ~~~
- *
- * A property can be accessed like a member variable of an object.
- * Reading or writing a property will cause the invocation of the corresponding
- * getter or setter method. For example,
- *
- * ~~~
- * // equivalent to $label = $object->getLabel();
- * $label = $object->label;
- * // equivalent to $object->setLabel('abc');
- * $object->label = 'abc';
- * ~~~
- *
- * If a property has only a getter method and has no setter method, it is
- * considered as *read-only*. In this case, trying to modify the property value
- * will cause an exception.
- *
- * Property names are *case-insensitive*.
- *
- * One can call [[hasProperty]], [[canGetProperty]] and/or [[canSetProperty]]
- * to check the existence of a property.
- *
- * Besides the property feature, the Object class defines a static method
- * [[create]] which provides a convenient alternative way of creating a new
- * object instance.
- *
- * The Object class also defines the [[evaluateExpression]] method so that a PHP
- * expression or callback can be dynamically evaluated within the context of an object.
+ * @include @yii/base/Object.md
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0

framework/base/Vector.php

@@ -13,10 +13,10 @@ namespace yii\base;
  * Vector implements an integer-indexed collection class.
  *
  * You can access, append, insert, remove an item from the vector
- * by calling methods such as [[itemAt]], [[add]], [[insertAt]],
- * [[remove]] and [[removeAt]].
+ * by calling methods such as [[itemAt()]], [[add()]], [[insertAt()]],
+ * [[remove()]] and [[removeAt()]].
  *
- * To get the number of the items in the vector, use [[getCount]].
+ * To get the number of the items in the vector, use [[getCount()]].
  *
  * Because Vector implements a set of SPL interfaces, it can be used
  * like a regular PHP array as follows,
@@ -32,7 +32,9 @@ namespace yii\base;
  *
  * Note that if you plan to extend Vector by performing additional operations
  * with each addition or removal of an item (e.g. performing type check),
- * please make sure you override [[insertAt]] and [[removeAt]].
+ * please make sure you override [[insertAt()]] and [[removeAt()]].
+ *
+ * @property integer $count the number of items in the vector
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0

framework/db/ar/ActiveRecordBehavior.php

 <?php
 /**
- * CActiveRecordBehavior class file.
+ * ActiveRecordBehavior class file.
  *
- * @author Qiang Xue <qiang.xue@gmail.com>
  * @link http://www.yiiframework.com/
- * @copyright Copyright &copy; 2008-2011 Yii Software LLC
+ * @copyright Copyright &copy; 2008-2012 Yii Software LLC
  * @license http://www.yiiframework.com/license/
  */
 
+namespace yii\db\ar;
+
+use yii\base\ModelBehavior;
+
 /**
- * CActiveRecordBehavior is the base class for behaviors that can be attached to {@link CActiveRecord}.
- * Compared with {@link CModelBehavior}, CActiveRecordBehavior attaches to more events
- * that are only defined by {@link CActiveRecord}.
+ * ActiveRecordBehavior is the base class for behaviors that can be attached to [[ActiveRecord]].
+ *
+ * Compared to [[\yii\base\ModelBehavior]], ActiveRecordBehavior responds to more events
+ * that are specific to [[ActiveRecord]].
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */
-class CActiveRecordBehavior extends CModelBehavior
+class ActiveRecordBehavior extends ModelBehavior
 {
 	/**
 	 * Declares events and the corresponding event handler methods.
 	 * If you override this method, make sure you merge the parent result to the return value.
 	 * @return array events (array keys) and the corresponding event handler methods (array values).
-	 * @see CBehavior::events
+	 * @see \yii\base\Behavior::events()
 	 */
 	public function events()
 	{
 		return array_merge(parent::events(), array(
-			'onBeforeInsert' => 'beforeInsert',
-			'onAfterInsert' => 'afterInsert',
-			'onBeforeUpdate' => 'beforeUpdate',
-			'onAfterUpdate' => 'afterUpdate',
-			'onBeforeDelete' => 'beforeDelete',
-			'onAfterDelete' => 'afterDelete',
-			'onBeforeFind' => 'beforeFind',
-			'onAfterFind' => 'afterFind',
+			'beforeInsert' => 'beforeInsert',
+			'afterInsert' => 'afterInsert',
+			'beforeUpdate' => 'beforeUpdate',
+			'afterUpdate' => 'afterUpdate',
+			'beforeDelete' => 'beforeDelete',
+			'afterDelete' => 'afterDelete',
 		));
 	}
 
 	/**
-	 * Responds to {@link CActiveRecord::onBeforeSave} event.
-	 * Overrides this method if you want to handle the corresponding event of the {@link CBehavior::owner owner}.
-	 * You may set {@link CModelEvent::isValid} to be false to quit the saving process.
-	 * @param CModelEvent $event event parameter
+	 * Responds to the owner's `beforeInsert` event.
+	 * Overrides this method if you want to handle the corresponding event of the owner.
+	 * You may set the [[ModelEvent::isValid|isValid]] property of the event parameter
+	 * to be false to quit the ActiveRecord inserting process.
+	 * @param \yii\base\ModelEvent $event event parameter
 	 */
 	public function beforeInsert($event)
 	{
 	}
 
 	/**
-	 * Responds to {@link CActiveRecord::onAfterSave} event.
-	 * Overrides this method if you want to handle the corresponding event of the {@link CBehavior::owner owner}.
-	 * @param CModelEvent $event event parameter
+	 * Responds to the owner's `afterInsert` event.
+	 * Overrides this method if you want to handle the corresponding event of the owner.
+	 * @param \yii\base\ModelEvent $event event parameter
 	 */
 	public function afterInsert($event)
 	{
 	}
 
 	/**
-	 * Responds to {@link CActiveRecord::onBeforeSave} event.
-	 * Overrides this method if you want to handle the corresponding event of the {@link CBehavior::owner owner}.
-	 * You may set {@link CModelEvent::isValid} to be false to quit the saving process.
-	 * @param CModelEvent $event event parameter
+	 * Responds to the owner's `beforeUpdate` event.
+	 * Overrides this method if you want to handle the corresponding event of the owner.
+	 * You may set the [[ModelEvent::isValid|isValid]] property of the event parameter
+	 * to be false to quit the ActiveRecord updating process.
+	 * @param \yii\base\ModelEvent $event event parameter
 	 */
 	public function beforeUpdate($event)
 	{
 	}
 
 	/**
-	 * Responds to {@link CActiveRecord::onAfterSave} event.
-	 * Overrides this method if you want to handle the corresponding event of the {@link CBehavior::owner owner}.
-	 * @param CModelEvent $event event parameter
+	 * Responds to the owner's `afterUpdate` event.
+	 * Overrides this method if you want to handle the corresponding event of the owner.
+	 * @param \yii\base\ModelEvent $event event parameter
 	 */
 	public function afterUpdate($event)
 	{
 	}
 
 	/**
-	 * Responds to {@link CActiveRecord::onBeforeDelete} event.
-	 * Overrides this method if you want to handle the corresponding event of the {@link CBehavior::owner owner}.
-	 * You may set {@link CModelEvent::isValid} to be false to quit the deletion process.
-	 * @param CEvent $event event parameter
+	 * Responds to the owner's `beforeDelete` event.
+	 * Overrides this method if you want to handle the corresponding event of the owner.
+	 * You may set the [[ModelEvent::isValid|isValid]] property of the event parameter
+	 * to be false to quit the ActiveRecord deleting process.
+	 * @param \yii\base\ModelEvent $event event parameter
 	 */
 	public function beforeDelete($event)
 	{
 	}
 
 	/**
-	 * Responds to {@link CActiveRecord::onAfterDelete} event.
-	 * Overrides this method if you want to handle the corresponding event of the {@link CBehavior::owner owner}.
-	 * @param CEvent $event event parameter
+	 * Responds to the owner's `afterDelete` event.
+	 * Overrides this method if you want to handle the corresponding event of the owner.
+	 * @param \yii\base\ModelEvent $event event parameter
 	 */
 	public function afterDelete($event)
 	{
 	}
-
-	/**
-	 * Responds to {@link CActiveRecord::onBeforeFind} event.
-	 * Overrides this method if you want to handle the corresponding event of the {@link CBehavior::owner owner}.
-	 * @param CEvent $event event parameter
-	 */
-	public function beforeFind($event)
-	{
-	}
-
-	/**
-	 * Responds to {@link CActiveRecord::onAfterFind} event.
-	 * Overrides this method if you want to handle the corresponding event of the {@link CBehavior::owner owner}.
-	 * @param CEvent $event event parameter
-	 */
-	public function afterFind($event)
-	{
-	}
 }

framework/db/dao/Command.php

@@ -222,7 +222,7 @@ class Command extends \yii\base\Component
 		}
 
 		\Yii::trace("Executing SQL: {$sql}{$paramLog}", __CLASS__);
-echo $sql . "\n\n";
+//echo $sql . "\n\n";
 		try {
 			if ($this->connection->enableProfiling) {
 				\Yii::beginProfile(__METHOD__ . "($sql)", __CLASS__);
@@ -355,7 +355,7 @@ echo $sql . "\n\n";
 		}
 
 		\Yii::trace("Querying SQL: {$sql}{$paramLog}", __CLASS__);
-echo $sql . "\n\n";
+//echo $sql . "\n\n";
 		if ($db->queryCachingCount > 0 && $db->queryCachingDuration >= 0 && $method !== '') {
 			$cache = \Yii::$application->getComponent($db->queryCacheID);
 		}