diff --git a/docs/guide/apps-advanced.md b/docs/guide/apps-advanced.md
index 890b1e9..5090b00 100644
--- a/docs/guide/apps-advanced.md
+++ b/docs/guide/apps-advanced.md
@@ -35,8 +35,8 @@ php /path/to/yii-application/init
 ---
 2. Create a new database. It is assumed that MySQL InnoDB is used. If not, adjust `console/migrations/m130524_201442_init.php`.
 3. In `common/config/params.php` set your database details in `components.db` values.
-
-4. Set document roots of your Web server:
+4. Apply migrations with console command 'yii migrate'.
+5. Set document roots of your Web server:
 
 - for frontend `/path/to/yii-application/frontend/web/` and using the URL `http://frontend/`
 - for backend `/path/to/yii-application/backend/web/` and using the URL `http://backend/`
diff --git a/framework/yii/base/Model.php b/framework/yii/base/Model.php
index caa6b61..06f0d1f 100644
--- a/framework/yii/base/Model.php
+++ b/framework/yii/base/Model.php
@@ -165,7 +165,7 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 * ]
 	 * ~~~
 	 *
-	 * By default, an active attribute that is considered safe and can be massively assigned.
+	 * By default, an active attribute is considered safe and can be massively assigned.
 	 * If an attribute should NOT be massively assigned (thus considered unsafe),
 	 * please prefix the attribute with an exclamation character (e.g. '!rank').
 	 *
@@ -178,29 +178,49 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 */
 	public function scenarios()
 	{
-		$scenarios = [];
-		$defaults = [];
-		/** @var $validator Validator */
+		$scenarios = [self::DEFAULT_SCENARIO => []];
 		foreach ($this->getValidators() as $validator) {
-			if (empty($validator->on)) {
-				foreach ($validator->attributes as $attribute) {
-					$defaults[$attribute] = true;
+			foreach ($validator->on as $scenario) {
+				$scenarios[$scenario] = [];
+			}
+			foreach ($validator->except as $scenario) {
+				$scenarios[$scenario] = [];
+			}
+		}
+		$names = array_keys($scenarios);
+
+		foreach ($this->getValidators() as $validator) {
+			if (empty($validator->on) && empty($validator->except)) {
+				foreach ($names as $name) {
+					foreach ($validator->attributes as $attribute) {
+						$scenarios[$name][$attribute] = true;
+					}
+				}
+			} elseif (empty($validator->on)) {
+				foreach ($names as $name) {
+					if (!in_array($name, $validator->except, true)) {
+						foreach ($validator->attributes as $attribute) {
+							$scenarios[$name][$attribute] = true;
+						}
+					}
 				}
 			} else {
-				foreach ($validator->on as $scenario) {
+				foreach ($validator->on as $name) {
 					foreach ($validator->attributes as $attribute) {
-						$scenarios[$scenario][$attribute] = true;
+						$scenarios[$name][$attribute] = true;
 					}
 				}
 			}
 		}
+
 		foreach ($scenarios as $scenario => $attributes) {
-			foreach (array_keys($defaults) as $attribute) {
-				$attributes[$attribute] = true;
+			if (empty($attributes) && $scenario !== self::DEFAULT_SCENARIO) {
+				unset($scenarios[$scenario]);
+			} else {
+				$scenarios[$scenario] = array_keys($attributes);
 			}
-			$scenarios[$scenario] = array_keys($attributes);
 		}
-		$scenarios[self::DEFAULT_SCENARIO] = array_keys($defaults);
+
 		return $scenarios;
 	}
 
diff --git a/framework/yii/base/Module.php b/framework/yii/base/Module.php
index 1e5302c..1dd243e 100644
--- a/framework/yii/base/Module.php
+++ b/framework/yii/base/Module.php
@@ -586,7 +586,8 @@ abstract class Module extends Component
 			Yii::$app->controller = $oldController;
 			return $result;
 		} else {
-			throw new InvalidRouteException('Unable to resolve the request "' . trim($this->getUniqueId() . '/' . $route, '/') . '".');
+			$id = $this->getUniqueId();
+			throw new InvalidRouteException('Unable to resolve the request "' . ($id === '' ? $route : $id . '/' . $route) . '".');
 		}
 	}
 
@@ -608,9 +609,8 @@ abstract class Module extends Component
 		if ($route === '') {
 			$route = $this->defaultRoute;
 		}
-		if (($pos = strpos($route, '/')) !== false) {
-			$id = substr($route, 0, $pos);
-			$route = substr($route, $pos + 1);
+		if (strpos($route, '/') !== false) {
+			list ($id, $route) = explode('/', $route, 2);
 		} else {
 			$id = $route;
 			$route = '';
@@ -623,7 +623,7 @@ abstract class Module extends Component
 
 		if (isset($this->controllerMap[$id])) {
 			$controller = Yii::createObject($this->controllerMap[$id], $id, $this);
-		} elseif (preg_match('/^[a-z0-9\\-_]+$/', $id)) {
+		} elseif (preg_match('/^[a-z0-9\\-_]+$/', $id) && strpos($id, '--') === false && trim($id, '-') === $id) {
 			$className = str_replace(' ', '', ucwords(str_replace('-', ' ', $id))) . 'Controller';
 			$classFile = $this->controllerPath . DIRECTORY_SEPARATOR . $className . '.php';
 			if (!is_file($classFile)) {
diff --git a/framework/yii/db/ActiveRelationTrait.php b/framework/yii/db/ActiveRelationTrait.php
index be42eb6..2960196 100644
--- a/framework/yii/db/ActiveRelationTrait.php
+++ b/framework/yii/db/ActiveRelationTrait.php
@@ -142,35 +142,42 @@ trait ActiveRelationTrait
 	 */
 	private function buildBuckets($models, $link, $viaModels = null, $viaLink = null)
 	{
-		$buckets = [];
-		$linkKeys = array_keys($link);
-		foreach ($models as $i => $model) {
-			$key = $this->getModelKey($model, $linkKeys);
-			if ($this->indexBy !== null) {
-				$buckets[$key][$i] = $model;
-			} else {
-				$buckets[$key][] = $model;
-			}
-		}
-
 		if ($viaModels !== null) {
-			$viaBuckets = [];
+			$map = [];
 			$viaLinkKeys = array_keys($viaLink);
 			$linkValues = array_values($link);
 			foreach ($viaModels as $viaModel) {
 				$key1 = $this->getModelKey($viaModel, $viaLinkKeys);
 				$key2 = $this->getModelKey($viaModel, $linkValues);
-				if (isset($buckets[$key2])) {
-					foreach ($buckets[$key2] as $i => $bucket) {
+				$map[$key2][$key1] = true;
+			}
+		}
+
+		$buckets = [];
+		$linkKeys = array_keys($link);
+
+		if (isset($map)) {
+			foreach ($models as $i => $model) {
+				$key = $this->getModelKey($model, $linkKeys);
+				if (isset($map[$key])) {
+					foreach (array_keys($map[$key]) as $key2) {
 						if ($this->indexBy !== null) {
-							$viaBuckets[$key1][$i] = $bucket;
+							$buckets[$key2][$i] = $model;
 						} else {
-							$viaBuckets[$key1][] = $bucket;
+							$buckets[$key2][] = $model;
 						}
 					}
 				}
 			}
-			$buckets = $viaBuckets;
+		} else {
+			foreach ($models as $i => $model) {
+				$key = $this->getModelKey($model, $linkKeys);
+				if ($this->indexBy !== null) {
+					$buckets[$key][$i] = $model;
+				} else {
+					$buckets[$key][] = $model;
+				}
+			}
 		}
 
 		if (!$this->multiple) {
diff --git a/framework/yii/db/QueryBuilder.php b/framework/yii/db/QueryBuilder.php
index 9327c79..55f4ace 100644
--- a/framework/yii/db/QueryBuilder.php
+++ b/framework/yii/db/QueryBuilder.php
@@ -141,12 +141,33 @@ class QueryBuilder extends \yii\base\Object
 	 * @param array $columns the column names
 	 * @param array $rows the rows to be batch inserted into the table
 	 * @return string the batch INSERT SQL statement
-	 * @throws NotSupportedException if this is not supported by the underlying DBMS
 	 */
 	public function batchInsert($table, $columns, $rows)
 	{
-		throw new NotSupportedException($this->db->getDriverName() . ' does not support batch insert.');
+		if (($tableSchema = $this->db->getTableSchema($table)) !== null) {
+			$columnSchemas = $tableSchema->columns;
+		} else {
+			$columnSchemas = [];
+		}
+
+		foreach ($columns as $i => $name) {
+			$columns[$i] = $this->db->quoteColumnName($name);
+		}
 
+		$values = [];
+		foreach ($rows as $row) {
+			$vs = [];
+			foreach ($row as $i => $value) {
+				if (!is_array($value) && isset($columnSchemas[$columns[$i]])) {
+					$value = $columnSchemas[$columns[$i]]->typecast($value);
+				}
+				$vs[] = is_string($value) ? $this->db->quoteValue($value) : $value;
+			}
+			$values[] = '(' . implode(', ', $vs) . ')';
+		}
+
+		return 'INSERT INTO ' . $this->db->quoteTableName($table)
+		. ' (' . implode(', ', $columns) . ') VALUES ' . implode(', ', $values);
 	}
 
 	/**
diff --git a/framework/yii/db/cubrid/QueryBuilder.php b/framework/yii/db/cubrid/QueryBuilder.php
index e80e1d6..7682516 100644
--- a/framework/yii/db/cubrid/QueryBuilder.php
+++ b/framework/yii/db/cubrid/QueryBuilder.php
@@ -69,49 +69,22 @@ class QueryBuilder extends \yii\db\QueryBuilder
 	}
 
 	/**
-	 * Generates a batch INSERT SQL statement.
-	 * For example,
-	 *
-	 * ~~~
-	 * $connection->createCommand()->batchInsert('tbl_user', ['name', 'age'], [
-	 *     ['Tom', 30],
-	 *     ['Jane', 20],
-	 *     ['Linda', 25],
-	 * ])->execute();
-	 * ~~~
-	 *
-	 * Note that the values in each row must match the corresponding column names.
-	 *
-	 * @param string $table the table that new rows will be inserted into.
-	 * @param array $columns the column names
-	 * @param array $rows the rows to be batch inserted into the table
-	 * @return string the batch INSERT SQL statement
+	 * @inheritDocs
 	 */
-	public function batchInsert($table, $columns, $rows)
+	public function buildLimit($limit, $offset)
 	{
-		if (($tableSchema = $this->db->getTableSchema($table)) !== null) {
-			$columnSchemas = $tableSchema->columns;
-		} else {
-			$columnSchemas = [];
-		}
-
-		foreach ($columns as $i => $name) {
-			$columns[$i] = $this->db->quoteColumnName($name);
-		}
-
-		$values = [];
-		foreach ($rows as $row) {
-			$vs = [];
-			foreach ($row as $i => $value) {
-				if (!is_array($value) && isset($columnSchemas[$columns[$i]])) {
-					$value = $columnSchemas[$columns[$i]]->typecast($value);
-				}
-				$vs[] = is_string($value) ? $this->db->quoteValue($value) : $value;
+		$sql = '';
+		// limit is not optional in CUBRID
+		// http://www.cubrid.org/manual/90/en/LIMIT%20Clause
+		// "You can specify a very big integer for row_count to display to the last row, starting from a specific row."
+		if ($limit !== null && $limit >= 0) {
+			$sql = 'LIMIT ' . (int)$limit;
+			if ($offset > 0) {
+				$sql .= ' OFFSET ' . (int)$offset;
 			}
-			$values[] = '(' . implode(', ', $vs) . ')';
+		} elseif ($offset > 0) {
+			$sql = 'LIMIT ' . (int)$offset . ', 18446744073709551615'; // 2^64-1
 		}
-
-		return 'INSERT INTO ' . $this->db->quoteTableName($table)
-			. ' (' . implode(', ', $columns) . ') VALUES ' . implode(', ', $values);
+		return $sql;
 	}
 }
diff --git a/framework/yii/db/mysql/QueryBuilder.php b/framework/yii/db/mysql/QueryBuilder.php
index 50e717c..93a06e3 100644
--- a/framework/yii/db/mysql/QueryBuilder.php
+++ b/framework/yii/db/mysql/QueryBuilder.php
@@ -142,49 +142,22 @@ class QueryBuilder extends \yii\db\QueryBuilder
 	}
 
 	/**
-	 * Generates a batch INSERT SQL statement.
-	 * For example,
-	 *
-	 * ~~~
-	 * $connection->createCommand()->batchInsert('tbl_user', ['name', 'age'], [
-	 *     ['Tom', 30],
-	 *     ['Jane', 20],
-	 *     ['Linda', 25],
-	 * ])->execute();
-	 * ~~~
-	 *
-	 * Note that the values in each row must match the corresponding column names.
-	 *
-	 * @param string $table the table that new rows will be inserted into.
-	 * @param array $columns the column names
-	 * @param array $rows the rows to be batch inserted into the table
-	 * @return string the batch INSERT SQL statement
+	 * @inheritDocs
 	 */
-	public function batchInsert($table, $columns, $rows)
+	public function buildLimit($limit, $offset)
 	{
-		if (($tableSchema = $this->db->getTableSchema($table)) !== null) {
-			$columnSchemas = $tableSchema->columns;
-		} else {
-			$columnSchemas = [];
-		}
-
-		foreach ($columns as $i => $name) {
-			$columns[$i] = $this->db->quoteColumnName($name);
-		}
-
-		$values = [];
-		foreach ($rows as $row) {
-			$vs = [];
-			foreach ($row as $i => $value) {
-				if (!is_array($value) && isset($columnSchemas[$columns[$i]])) {
-					$value = $columnSchemas[$columns[$i]]->typecast($value);
-				}
-				$vs[] = is_string($value) ? $this->db->quoteValue($value) : $value;
+		$sql = '';
+		// limit is not optional in MySQL
+		// http://stackoverflow.com/a/271650/1106908
+		// http://dev.mysql.com/doc/refman/5.0/en/select.html#idm47619502796240
+		if ($limit !== null && $limit >= 0) {
+			$sql = 'LIMIT ' . (int)$limit;
+			if ($offset > 0) {
+				$sql .= ' OFFSET ' . (int)$offset;
 			}
-			$values[] = '(' . implode(', ', $vs) . ')';
+		} elseif ($offset > 0) {
+			$sql = 'LIMIT ' . (int)$offset . ', 18446744073709551615'; // 2^64-1
 		}
-
-		return 'INSERT INTO ' . $this->db->quoteTableName($table)
-			. ' (' . implode(', ', $columns) . ') VALUES ' . implode(', ', $values);
+		return $sql;
 	}
 }
diff --git a/framework/yii/db/sqlite/QueryBuilder.php b/framework/yii/db/sqlite/QueryBuilder.php
index 4a5407f..be4248a 100644
--- a/framework/yii/db/sqlite/QueryBuilder.php
+++ b/framework/yii/db/sqlite/QueryBuilder.php
@@ -42,6 +42,53 @@ class QueryBuilder extends \yii\db\QueryBuilder
 	];
 
 	/**
+	 * Generates a batch INSERT SQL statement.
+	 * For example,
+	 *
+	 * ~~~
+	 * $connection->createCommand()->batchInsert('tbl_user', ['name', 'age'], [
+	 *     ['Tom', 30],
+	 *     ['Jane', 20],
+	 *     ['Linda', 25],
+	 * ])->execute();
+	 * ~~~
+	 *
+	 * Note that the values in each row must match the corresponding column names.
+	 *
+	 * @param string $table the table that new rows will be inserted into.
+	 * @param array $columns the column names
+	 * @param array $rows the rows to be batch inserted into the table
+	 * @return string the batch INSERT SQL statement
+	 */
+	public function batchInsert($table, $columns, $rows)
+	{
+		if (($tableSchema = $this->db->getTableSchema($table)) !== null) {
+			$columnSchemas = $tableSchema->columns;
+		} else {
+			$columnSchemas = [];
+		}
+
+		foreach ($columns as $i => $name) {
+			$columns[$i] = $this->db->quoteColumnName($name);
+		}
+
+		$values = [];
+		foreach ($rows as $row) {
+			$vs = [];
+			foreach ($row as $i => $value) {
+				if (!is_array($value) && isset($columnSchemas[$columns[$i]])) {
+					$value = $columnSchemas[$columns[$i]]->typecast($value);
+				}
+				$vs[] = is_string($value) ? $this->db->quoteValue($value) : $value;
+			}
+			$values[] = implode(', ', $vs);
+		}
+
+		return 'INSERT INTO ' . $this->db->quoteTableName($table)
+		. ' (' . implode(', ', $columns) . ') SELECT ' . implode(' UNION ALL ', $values);
+	}
+
+	/**
 	 * Creates a SQL statement for resetting the sequence value of a table's primary key.
 	 * The sequence will be reset such that the primary key of the next new row inserted
 	 * will have the specified value or 1.
@@ -206,4 +253,23 @@ class QueryBuilder extends \yii\db\QueryBuilder
 	{
 		throw new NotSupportedException(__METHOD__ . ' is not supported by SQLite.');
 	}
+
+	/**
+	 * @inheritDocs
+	 */
+	public function buildLimit($limit, $offset)
+	{
+		$sql = '';
+		// limit is not optional in SQLite
+		// http://www.sqlite.org/syntaxdiagrams.html#select-stmt
+		if ($limit !== null && $limit >= 0) {
+			$sql = 'LIMIT ' . (int)$limit;
+			if ($offset > 0) {
+				$sql .= ' OFFSET ' . (int)$offset;
+			}
+		} elseif ($offset > 0) {
+			$sql = 'LIMIT 9223372036854775807 OFFSET ' . (int)$offset; // 2^63-1
+		}
+		return $sql;
+	}
 }
diff --git a/tests/unit/framework/base/ModelTest.php b/tests/unit/framework/base/ModelTest.php
index da8495b..d304741 100644
--- a/tests/unit/framework/base/ModelTest.php
+++ b/tests/unit/framework/base/ModelTest.php
@@ -217,6 +217,20 @@ class ModelTest extends TestCase
 	{
 		$singer = new Singer();
 		$this->assertEquals(['default' => ['lastName', 'underscore_style']], $singer->scenarios());
+
+		$scenarios = [
+			'default' => ['id', 'name', 'description'],
+			'administration' => ['name', 'description', 'is_disabled'],
+		];
+		$model = new ComplexModel1();
+		$this->assertEquals($scenarios, $model->scenarios());
+		$scenarios = [
+			'default' => ['id', 'name', 'description'],
+			'suddenlyUnexpectedScenario' => ['name', 'description'],
+			'administration' => ['id', 'name', 'description', 'is_disabled'],
+		];
+		$model = new ComplexModel2();
+		$this->assertEquals($scenarios, $model->scenarios());
 	}
 
 	public function testIsAttributeRequired()
@@ -234,3 +248,27 @@ class ModelTest extends TestCase
 		$invalid->createValidators();
 	}
 }
+
+class ComplexModel1 extends Model
+{
+	public function rules()
+	{
+		return [
+			[['id'], 'required', 'except' => 'administration'],
+			[['name', 'description'], 'filter', 'filter' => 'trim'],
+			[['is_disabled'], 'boolean', 'on' => 'administration'],
+		];
+	}
+}
+
+class ComplexModel2 extends Model
+{
+	public function rules()
+	{
+		return [
+			[['id'], 'required', 'except' => 'suddenlyUnexpectedScenario'],
+			[['name', 'description'], 'filter', 'filter' => 'trim'],
+			[['is_disabled'], 'boolean', 'on' => 'administration'],
+		];
+	}
+}
diff --git a/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php b/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php
index d7904d0..67cae28 100644
--- a/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php
+++ b/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php
@@ -81,4 +81,10 @@ class SqliteQueryBuilderTest extends QueryBuilderTest
 		$this->setExpectedException('yii\base\NotSupportedException');
 		parent::testAddDropPrimaryKey();
 	}
+
+	public function testBatchInsert()
+	{
+		$sql = $this->getQueryBuilder()->batchInsert('{{tbl_customer}} t', ['t.id','t.name'], array(array(1,'a'), array(2,'b')));
+		$this->assertEquals("INSERT INTO {{tbl_customer}} t ('t'.\"id\", 't'.\"name\") SELECT 1, 'a' UNION ALL 2, 'b'", $sql);
+	}
 }
diff --git a/tests/unit/framework/i18n/FormatterTest.php b/tests/unit/framework/i18n/FormatterTest.php
index ed5ab33..3d384fc 100644
--- a/tests/unit/framework/i18n/FormatterTest.php
+++ b/tests/unit/framework/i18n/FormatterTest.php
@@ -77,8 +77,10 @@ class FormatterTest extends TestCase
 		$this->assertSame('$123.00', $this->formatter->asCurrency($value));
 		$value = '123.456';
 		$this->assertSame("$123.46", $this->formatter->asCurrency($value));
-		$value = '-123456.123';
-		$this->assertSame("($123,456.12)", $this->formatter->asCurrency($value));
+		// Starting from ICU 52.1, negative currency value will be formatted as -$123,456.12
+		// see: http://source.icu-project.org/repos/icu/icu/tags/release-52-1/source/data/locales/en.txt
+//		$value = '-123456.123';
+//		$this->assertSame("($123,456.12)", $this->formatter->asCurrency($value));
 		$this->assertSame($this->formatter->nullDisplay, $this->formatter->asCurrency(null));
 	}