diff --git a/extensions/elasticsearch/ActiveRecord.php b/extensions/elasticsearch/ActiveRecord.php
index e5f991f..efdb5fe 100644
--- a/extensions/elasticsearch/ActiveRecord.php
+++ b/extensions/elasticsearch/ActiveRecord.php
@@ -216,7 +216,7 @@ class ActiveRecord extends \yii\db\ActiveRecord
 	 * This method must be overridden by child classes to define available attributes.
 	 * @return array list of attribute names.
 	 */
-	public static function attributes()
+	public function attributes()
 	{
 		throw new InvalidConfigException('The attributes() method of elasticsearch ActiveRecord has to be implemented by child classes.');
 	}
diff --git a/extensions/redis/ActiveRecord.php b/extensions/redis/ActiveRecord.php
index 1137629..8c2933c 100644
--- a/extensions/redis/ActiveRecord.php
+++ b/extensions/redis/ActiveRecord.php
@@ -81,7 +81,7 @@ class ActiveRecord extends \yii\db\ActiveRecord
 	 * This method must be overridden by child classes to define available attributes.
 	 * @return array list of attribute names.
 	 */
-	public static function attributes()
+	public function attributes()
 	{
 		throw new InvalidConfigException('The attributes() method of redis ActiveRecord has to be implemented by child classes.');
 	}
diff --git a/extensions/sphinx/ActiveRecord.php b/extensions/sphinx/ActiveRecord.php
index d7f44ef..9cf03ff 100644
--- a/extensions/sphinx/ActiveRecord.php
+++ b/extensions/sphinx/ActiveRecord.php
@@ -623,7 +623,7 @@ abstract class ActiveRecord extends Model
 	 * The default implementation will return all column names of the table associated with this AR class.
 	 * @return array list of attribute names.
 	 */
-	public static function attributes()
+	public function attributes()
 	{
 		return array_keys(static::getIndexSchema()->columns);
 	}
diff --git a/framework/yii/base/Model.php b/framework/yii/base/Model.php
index 06f0d1f..3668826 100644
--- a/framework/yii/base/Model.php
+++ b/framework/yii/base/Model.php
@@ -249,9 +249,9 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 * You may override this method to change the default behavior.
 	 * @return array list of attribute names.
 	 */
-	public static function attributes()
+	public function attributes()
 	{
-		$class = new ReflectionClass(get_called_class());
+		$class = new ReflectionClass($this);
 		$names = [];
 		foreach ($class->getProperties(\ReflectionProperty::IS_PUBLIC) as $property) {
 			if (!$property->isStatic()) {
diff --git a/framework/yii/db/ActiveRecord.php b/framework/yii/db/ActiveRecord.php
index 0b201a2..bb2016a 100644
--- a/framework/yii/db/ActiveRecord.php
+++ b/framework/yii/db/ActiveRecord.php
@@ -570,7 +570,7 @@ class ActiveRecord extends Model
 	 * The default implementation will return all column names of the table associated with this AR class.
 	 * @return array list of attribute names.
 	 */
-	public static function attributes()
+	public function attributes()
 	{
 		return array_keys(static::getTableSchema()->columns);
 	}
@@ -1256,7 +1256,7 @@ class ActiveRecord extends Model
 	public static function create($row)
 	{
 		$record = static::instantiate($row);
-		$columns = array_flip(static::attributes());
+		$columns = array_flip($record->attributes());
 		foreach ($row as $name => $value) {
 			if (isset($columns[$name])) {
 				$record->_attributes[$name] = $value;
diff --git a/framework/yii/validators/UniqueValidator.php b/framework/yii/validators/UniqueValidator.php
index dedceb9..053f795 100644
--- a/framework/yii/validators/UniqueValidator.php
+++ b/framework/yii/validators/UniqueValidator.php
@@ -64,11 +64,6 @@ class UniqueValidator extends Validator
 		$className = $this->className === null ? get_class($object) : $this->className;
 		$attributeName = $this->attributeName === null ? $attribute : $this->attributeName;
 
-		$attributes = $className::attributes();
-		if (!in_array($attributeName, $attributes)) {
-			throw new InvalidConfigException("'$className' does not have an attribute named '$attributeName'.");
-		}
-
 		$query = $className::find();
 		$query->where([$attributeName => $value]);
 
diff --git a/tests/unit/data/ar/elasticsearch/Customer.php b/tests/unit/data/ar/elasticsearch/Customer.php
index 7d00dd3..0c07d08 100644
--- a/tests/unit/data/ar/elasticsearch/Customer.php
+++ b/tests/unit/data/ar/elasticsearch/Customer.php
@@ -19,7 +19,7 @@ class Customer extends ActiveRecord
 
 	public $status2;
 
-	public static function attributes()
+	public function attributes()
 	{
 		return ['name', 'email', 'address', 'status'];
 	}
diff --git a/tests/unit/data/ar/elasticsearch/Item.php b/tests/unit/data/ar/elasticsearch/Item.php
index 319783c..7e09b0c 100644
--- a/tests/unit/data/ar/elasticsearch/Item.php
+++ b/tests/unit/data/ar/elasticsearch/Item.php
@@ -11,7 +11,7 @@ namespace yiiunit\data\ar\elasticsearch;
  */
 class Item extends ActiveRecord
 {
-	public static function attributes()
+	public function attributes()
 	{
 		return ['name', 'category_id'];
 	}
diff --git a/tests/unit/data/ar/elasticsearch/Order.php b/tests/unit/data/ar/elasticsearch/Order.php
index 2efeb07..088011c 100644
--- a/tests/unit/data/ar/elasticsearch/Order.php
+++ b/tests/unit/data/ar/elasticsearch/Order.php
@@ -12,7 +12,7 @@ namespace yiiunit\data\ar\elasticsearch;
  */
 class Order extends ActiveRecord
 {
-	public static function attributes()
+	public function attributes()
 	{
 		return ['customer_id', 'create_time', 'total'];
 	}
diff --git a/tests/unit/data/ar/elasticsearch/OrderItem.php b/tests/unit/data/ar/elasticsearch/OrderItem.php
index e31e8e3..a43d8b2 100644
--- a/tests/unit/data/ar/elasticsearch/OrderItem.php
+++ b/tests/unit/data/ar/elasticsearch/OrderItem.php
@@ -12,7 +12,7 @@ namespace yiiunit\data\ar\elasticsearch;
  */
 class OrderItem extends ActiveRecord
 {
-	public static function attributes()
+	public function attributes()
 	{
 		return ['order_id', 'item_id', 'quantity', 'subtotal'];
 	}
diff --git a/tests/unit/data/ar/redis/Customer.php b/tests/unit/data/ar/redis/Customer.php
index 2c9dd82..63143ff 100644
--- a/tests/unit/data/ar/redis/Customer.php
+++ b/tests/unit/data/ar/redis/Customer.php
@@ -11,7 +11,7 @@ class Customer extends ActiveRecord
 
 	public $status2;
 
-	public static function attributes()
+	public function attributes()
 	{
 		return ['id', 'email', 'name', 'address', 'status'];
 	}
diff --git a/tests/unit/data/ar/redis/Item.php b/tests/unit/data/ar/redis/Item.php
index 1163265..0bcb072 100644
--- a/tests/unit/data/ar/redis/Item.php
+++ b/tests/unit/data/ar/redis/Item.php
@@ -4,7 +4,7 @@ namespace yiiunit\data\ar\redis;
 
 class Item extends ActiveRecord
 {
-	public static function attributes()
+	public function attributes()
 	{
 		return ['id', 'name', 'category_id'];
 	}
diff --git a/tests/unit/data/ar/redis/Order.php b/tests/unit/data/ar/redis/Order.php
index 0769ce2..ec5e816 100644
--- a/tests/unit/data/ar/redis/Order.php
+++ b/tests/unit/data/ar/redis/Order.php
@@ -4,7 +4,7 @@ namespace yiiunit\data\ar\redis;
 
 class Order extends ActiveRecord
 {
-	public static function attributes()
+	public function attributes()
 	{
 		return ['id', 'customer_id', 'create_time', 'total'];
 	}
diff --git a/tests/unit/data/ar/redis/OrderItem.php b/tests/unit/data/ar/redis/OrderItem.php
index 38def6b..a4c82b9 100644
--- a/tests/unit/data/ar/redis/OrderItem.php
+++ b/tests/unit/data/ar/redis/OrderItem.php
@@ -2,8 +2,6 @@
 
 namespace yiiunit\data\ar\redis;
 
-use yii\redis\RecordSchema;
-
 class OrderItem extends ActiveRecord
 {
 	public static function primaryKey()
@@ -11,7 +9,7 @@ class OrderItem extends ActiveRecord
 		return ['order_id', 'item_id'];
 	}
 
-	public static function attributes()
+	public function attributes()
 	{
 		return ['order_id', 'item_id', 'quantity', 'subtotal'];
 	}