diff --git a/framework/db/ar/ActiveFinder.php b/framework/db/ar/ActiveFinder.php
index c30c342..5d34409 100644
--- a/framework/db/ar/ActiveFinder.php
+++ b/framework/db/ar/ActiveFinder.php
@@ -74,21 +74,21 @@ class ActiveFinder extends \yii\base\Object
 		$rows = $command->queryAll();
 		$records = array();
 		if ($query->asArray) {
-			if ($query->indexBy === null) {
+			if ($query->index === null) {
 				return $rows;
 			}
 			foreach ($rows as $row) {
-				$records[$row[$query->indexBy]] = $row;
+				$records[$row[$query->index]] = $row;
 			}
 		} else {
 			$class = $query->modelClass;
-			if ($query->indexBy === null) {
+			if ($query->index === null) {
 				foreach ($rows as $row) {
 					$records[] = $class::create($row);
 				}
 			} else {
 				foreach ($rows as $row) {
-					$records[$row[$query->indexBy]] = $class::create($row);
+					$records[$row[$query->index]] = $class::create($row);
 				}
 			}
 		}
@@ -125,10 +125,10 @@ class ActiveFinder extends \yii\base\Object
 			$joinTree->createRecord($row);
 		}
 
-		if ($query->indexBy !== null) {
+		if ($query->index !== null) {
 			$records = array();
 			foreach ($joinTree->records as $record) {
-				$records[$record[$query->indexBy]] = $record;
+				$records[$record[$query->index]] = $record;
 			}
 			return $records;
 		} else {
diff --git a/framework/db/ar/ActiveRecord.php b/framework/db/ar/ActiveRecord.php
index 4ed4736..cb31f8d 100644
--- a/framework/db/ar/ActiveRecord.php
+++ b/framework/db/ar/ActiveRecord.php
@@ -524,8 +524,8 @@ abstract class ActiveRecord extends Model
 	public function addRelatedRecord($relation, $record)
 	{
 		if ($relation->hasMany) {
-			if ($relation->indexBy !== null) {
-				$this->_related[$relation->name][$record->{$relation->indexBy}] = $record;
+			if ($relation->index !== null) {
+				$this->_related[$relation->name][$record->{$relation->index}] = $record;
 			} else {
 				$this->_related[$relation->name][] = $record;
 			}
diff --git a/framework/db/ar/BaseActiveQuery.php b/framework/db/ar/BaseActiveQuery.php
index c53a4f2..61dc664 100644
--- a/framework/db/ar/BaseActiveQuery.php
+++ b/framework/db/ar/BaseActiveQuery.php
@@ -34,7 +34,7 @@ class BaseActiveQuery extends BaseQuery
 	 * @var string the name of the column that the result should be indexed by.
 	 * This is only useful when the query result is returned as an array.
 	 */
-	public $indexBy;
+	public $index;
 	/**
 	 * @var boolean whether to return each record as an array. If false (default), an object
 	 * of [[modelClass]] will be created to represent each record.
@@ -61,9 +61,9 @@ class BaseActiveQuery extends BaseQuery
 		return $this;
 	}
 
-	public function indexBy($column)
+	public function index($column)
 	{
-		$this->indexBy = $column;
+		$this->index = $column;
 		return $this;
 	}
 
diff --git a/framework/db/ar/JoinElement.php b/framework/db/ar/JoinElement.php
index 72b740a..371e6a6 100644
--- a/framework/db/ar/JoinElement.php
+++ b/framework/db/ar/JoinElement.php
@@ -111,8 +111,8 @@ class JoinElement extends \yii\base\Object
 				continue;
 			}
 			if ($child->query->hasMany) {
-				if ($child->query->indexBy !== null) {
-					$hash = $childRecord[$child->query->indexBy];
+				if ($child->query->index !== null) {
+					$hash = $childRecord[$child->query->index];
 				} else {
 					$hash = serialize($childRecord->getPrimaryKey());
 				}
diff --git a/tests/unit/framework/db/ar/ActiveRecordTest.php b/tests/unit/framework/db/ar/ActiveRecordTest.php
index e9bbb67..636be01 100644
--- a/tests/unit/framework/db/ar/ActiveRecordTest.php
+++ b/tests/unit/framework/db/ar/ActiveRecordTest.php
@@ -217,8 +217,8 @@ class ActiveRecordTest extends \yiiunit\MysqlTestCase
 		$customers = Customer::find()->order('id')->asArray()->all();
 		$this->assertEquals('user2', $customers[1]['name']);
 
-		// indexBy
-		$customers = Customer::find()->order('id')->indexBy('name')->all();
+		// index
+		$customers = Customer::find()->order('id')->index('name')->all();
 		$this->assertEquals(2, $customers['user2']['id']);
 	}