Merge http://github.com/yiisoft/yii2

* http://github.com/yiisoft/yii2:
  Fixes issue #134
  Rollback word consistencty over entire codebase (ref. #139).
  Add ensureBehaviors() to detachBehavior*()

docs/api/db/ActiveRecord.md

@@ -412,7 +412,7 @@ class Customer extends \yii\db\ActiveRecord
 	/**
 	 * @param ActiveQuery $query
 	 */
-	public function active($query)
+	public static function active($query)
 	{
 		$query->andWhere('status = 1');
 	}
@@ -435,7 +435,7 @@ class Customer extends \yii\db\ActiveRecord
 	 * @param ActiveQuery $query
 	 * @param integer $age
 	 */
-	public function olderThan($query, $age = 30)
+	public static function olderThan($query, $age = 30)
 	{
 		$query->andWhere('age > :age', array(':age' => $age));
 	}

framework/base/Component.php

@@ -496,6 +496,7 @@ class Component extends Object
 	 */
 	public function detachBehavior($name)
 	{
+		$this->ensureBehaviors();
 		if (isset($this->_behaviors[$name])) {
 			$behavior = $this->_behaviors[$name];
 			unset($this->_behaviors[$name]);
@@ -511,6 +512,7 @@ class Component extends Object
 	 */
 	public function detachBehaviors()
 	{
+		$this->ensureBehaviors();
 		if ($this->_behaviors !== null) {
 			foreach ($this->_behaviors as $name => $behavior) {
 				$this->detachBehavior($name);

framework/db/ActiveQuery.php

@@ -88,7 +88,8 @@ class ActiveQuery extends Query
 	{
 		if (method_exists($this->modelClass, $name)) {
 			array_unshift($params, $this);
-			return call_user_func_array(array($this->modelClass, $name), $params);
+			call_user_func_array(array($this->modelClass, $name), $params);
+			return $this;
 		} else {
 			return parent::__call($name, $params);
 		}

framework/db/Connection.php

@@ -66,7 +66,7 @@ use yii\caching\Cache;
  *     // ... executing other SQL statements ...
  *     $transaction->commit();
  * } catch(Exception $e) {
- *     $transaction->rollBack();
+ *     $transaction->rollback();
  * }
  * ~~~
  *

framework/db/Migration.php

@@ -64,14 +64,14 @@ class Migration extends \yii\base\Component
 		$transaction = $this->db->beginTransaction();
 		try {
 			if ($this->safeUp() === false) {
-				$transaction->rollBack();
+				$transaction->rollback();
 				return false;
 			}
 			$transaction->commit();
 		} catch (\Exception $e) {
 			echo "Exception: " . $e->getMessage() . ' (' . $e->getFile() . ':' . $e->getLine() . ")\n";
 			echo $e->getTraceAsString() . "\n";
-			$transaction->rollBack();
+			$transaction->rollback();
 			return false;
 		}
 		return null;
@@ -89,14 +89,14 @@ class Migration extends \yii\base\Component
 		$transaction = $this->db->beginTransaction();
 		try {
 			if ($this->safeDown() === false) {
-				$transaction->rollBack();
+				$transaction->rollback();
 				return false;
 			}
 			$transaction->commit();
 		} catch (\Exception $e) {
 			echo "Exception: " . $e->getMessage() . ' (' . $e->getFile() . ':' . $e->getLine() . ")\n";
 			echo $e->getTraceAsString() . "\n";
-			$transaction->rollBack();
+			$transaction->rollback();
 			return false;
 		}
 		return null;

framework/db/Transaction.php

@@ -25,7 +25,7 @@ use yii\base\InvalidConfigException;
  *     //.... other SQL executions
  *     $transaction->commit();
  * } catch(Exception $e) {
- *     $transaction->rollBack();
+ *     $transaction->rollback();
  * }
  * ~~~
  *
@@ -42,14 +42,14 @@ class Transaction extends \yii\base\Object
 	public $db;
 	/**
 	 * @var boolean whether this transaction is active. Only an active transaction
-	 * can [[commit()]] or [[rollBack()]]. This property is set true when the transaction is started.
+	 * can [[commit()]] or [[rollback()]]. This property is set true when the transaction is started.
 	 */
 	private $_active = false;
 
 	/**
 	 * Returns a value indicating whether this transaction is active.
 	 * @return boolean whether this transaction is active. Only an active transaction
-	 * can [[commit()]] or [[rollBack()]].
+	 * can [[commit()]] or [[rollback()]].
 	 */
 	public function getIsActive()
 	{

tests/unit/data/ar/Customer.php

@@ -22,6 +22,6 @@ class Customer extends ActiveRecord
 
 	public static function active($query)
 	{
-		return $query->andWhere('status=1');
+		$query->andWhere('status=1');
 	}
 }