diff --git a/framework/db/ActiveQuery.php b/framework/db/ActiveQuery.php
index 813936b..0810620 100644
--- a/framework/db/ActiveQuery.php
+++ b/framework/db/ActiveQuery.php
@@ -251,16 +251,21 @@ class ActiveQuery extends Query
 				$childName = null;
 			}
 
-			if (!isset($relations[$name])) {
-				if (!method_exists($model, $name)) {
+			$t = strtolower($name);
+			if (!isset($relations[$t])) {
+				$getter = 'get' . $name;
+				if (!method_exists($model, $getter)) {
+					throw new Exception("Unknown relation: $name");
+				}
+				$relation = $model->$getter();
+				if ($relation instanceof ActiveRelation) {
+					$relation->primaryModel = null;
+					$relations[$t] = $relation;
+				} else {
 					throw new Exception("Unknown relation: $name");
 				}
-				/** @var $relation ActiveRelation */
-				$relation = $model->$name();
-				$relation->primaryModel = null;
-				$relations[$name] = $relation;
 			} else {
-				$relation = $relations[$name];
+				$relation = $relations[$t];
 			}
 
 			if (isset($childName)) {
diff --git a/framework/db/ActiveRecord.php b/framework/db/ActiveRecord.php
index 5075fae..0a3bbe3 100644
--- a/framework/db/ActiveRecord.php
+++ b/framework/db/ActiveRecord.php
@@ -284,18 +284,17 @@ abstract class ActiveRecord extends Model
 			return $this->_attributes[$name];
 		} elseif (isset($this->getTableSchema()->columns[$name])) {
 			return null;
-		} elseif (method_exists($this, $name)) {
-			// related records
-			if (isset($this->_related[$name]) || isset($this->_related) && array_key_exists($name, $this->_related)) {
-				return $this->_related[$name];
+		} else {
+			$t = strtolower($name);
+			if (isset($this->_related[$t]) || $this->_related !== null && array_key_exists($t, $this->_related)) {
+				return $this->_related[$t];
+			}
+			$value = parent::__get($name);
+			if ($value instanceof ActiveRelation) {
+				return $this->_related[$t] = $value->multiple ? $value->all() : $value->one();
 			} else {
-				// lazy loading related records
-				/** @var $relation ActiveRelation */
-				$relation = $this->$name();
-				return $this->_related[$name] = $relation->multiple ? $relation->all() : $relation->one();
+				return $value;
 			}
-		} else {
-			return parent::__get($name);
 		}
 	}
 
@@ -309,8 +308,6 @@ abstract class ActiveRecord extends Model
 	{
 		if (isset($this->getTableSchema()->columns[$name])) {
 			$this->_attributes[$name] = $value;
-		} elseif (method_exists($this, $name)) {
-			$this->_related[$name] = $value;
 		} else {
 			parent::__set($name, $value);
 		}
@@ -325,11 +322,13 @@ abstract class ActiveRecord extends Model
 	 */
 	public function __isset($name)
 	{
-		if (isset($this->_attributes[$name]) || isset($this->_related[$name])) {
-			return true;
-		} elseif (isset($this->getTableSchema()->columns[$name]) || method_exists($this, $name)) {
-			return false;
+		if (isset($this->getTableSchema()->columns[$name])) {
+			return isset($this->_related[$name]);
 		} else {
+			$t = strtolower($name);
+			if (isset($this->_related[$t])) {
+				return true;
+			}
 			return parent::__isset($name);
 		}
 	}
@@ -344,10 +343,13 @@ abstract class ActiveRecord extends Model
 	{
 		if (isset($this->getTableSchema()->columns[$name])) {
 			unset($this->_attributes[$name]);
-		} elseif (method_exists($this, $name)) {
-			unset($this->_related[$name]);
 		} else {
-			parent::__unset($name);
+			$t = strtolower($name);
+			if (isset($this->_related[$t])) {
+				unset($this->_related[$t]);
+			} else {
+				parent::__unset($name);
+			}
 		}
 	}
 
@@ -399,30 +401,12 @@ abstract class ActiveRecord extends Model
 	}
 
 	/**
-	 * Initializes the internal storage for the relation.
-	 * This method is internally used by [[ActiveQuery]] when populating relation data.
-	 * @param ActiveRelation $relation the relation object
+	 * @param string $name
+	 * @param mixed $value
 	 */
-	public function initRelation($relation)
+	public function populateRelation($name, $value)
 	{
-		$this->_related[$relation->name] = $relation->hasMany ? array() : null;
-	}
-
-	/**
-	 * @param ActiveRelation $relation
-	 * @param ActiveRecord $record
-	 */
-	public function addRelatedRecord($relation, $record)
-	{
-		if ($relation->hasMany) {
-			if ($relation->indexBy !== null) {
-				$this->_related[$relation->name][$record->{$relation->indexBy}] = $record;
-			} else {
-				$this->_related[$relation->name][] = $record;
-			}
-		} else {
-			$this->_related[$relation->name] = $record;
-		}
+		$this->_related[$name] = $value;
 	}
 
 	/**
diff --git a/framework/db/ActiveRelation.php b/framework/db/ActiveRelation.php
index c654f89..f6d5683 100644
--- a/framework/db/ActiveRelation.php
+++ b/framework/db/ActiveRelation.php
@@ -51,17 +51,23 @@ class ActiveRelation extends ActiveQuery
 	 * @param string $relationName
 	 * @param callback $callback
 	 * @return ActiveRelation
+	 * @throws Exception
 	 */
 	public function via($relationName, $callback = null)
 	{
-		/** @var $relation ActiveRelation */
-		$relation = $this->primaryModel->$relationName();
-		$relation->primaryModel = null;
-		$this->via = array($relationName, $relation);
-		if ($callback !== null) {
-			call_user_func($callback, $relation);
+		$getter = 'get' . $relationName;
+		if (method_exists($this->primaryModel, $getter)) {
+			$relation = $this->primaryModel->$getter();
+			if ($relation instanceof ActiveRelation) {
+				$relation->primaryModel = null;
+				$this->via = array($relationName, $relation);
+				if ($callback !== null) {
+					call_user_func($callback, $relation);
+				}
+				return $this;
+			}
 		}
-		return $this;
+		throw new Exception('Unknown relation: ' . $relationName);
 	}
 
 	/**
@@ -106,9 +112,11 @@ class ActiveRelation extends ActiveQuery
 				list($viaName, $viaQuery) = $this->via;
 				$viaQuery->primaryModel = $this->primaryModel;
 				if ($viaQuery->multiple) {
-					$this->primaryModel->$viaName = $viaModels = $viaQuery->all();
+					$viaModels = $viaQuery->all();
+					$this->primaryModel->populateRelation($viaName, $viaModels);
 				} else {
-					$this->primaryModel->$viaName = $model = $viaQuery->one();
+					$model = $viaQuery->one();
+					$this->primaryModel->populateRelation($viaName, $model);
 					$viaModels = $model === null ? array() : array($model);
 				}
 				$this->filterByModels($viaModels);
@@ -144,7 +152,11 @@ class ActiveRelation extends ActiveQuery
 		if (count($primaryModels) === 1 && !$this->multiple) {
 			$model = $this->one();
 			foreach ($primaryModels as $i => $primaryModel) {
-				$primaryModels[$i][$name] = $model;
+				if ($primaryModel instanceof ActiveRecord) {
+					$primaryModel->populateRelation($name, $model);
+				} else {
+					$primaryModels[$i][$name] = $model;
+				}
 			}
 			return array($model);
 		} else {
@@ -158,10 +170,11 @@ class ActiveRelation extends ActiveQuery
 			$link = array_values(isset($viaQuery) ? $viaQuery->link : $this->link);
 			foreach ($primaryModels as $i => $primaryModel) {
 				$key = $this->getModelKey($primaryModel, $link);
-				if (isset($buckets[$key])) {
-					$primaryModels[$i][$name] = $buckets[$key];
+				$value = isset($buckets[$key]) ? $buckets[$key] : ($this->multiple ? array() : null);
+				if ($primaryModel instanceof ActiveRecord) {
+					$primaryModel->populateRelation($name, $value);
 				} else {
-					$primaryModels[$i][$name] = $this->multiple ? array() : null;
+					$primaryModels[$i][$name] = $value;
 				}
 			}
 			return $models;
@@ -262,11 +275,4 @@ class ActiveRelation extends ActiveQuery
 		$sql = $db->getQueryBuilder()->build($this);
 		return $db->createCommand($sql, $this->params)->queryAll();
 	}
-
-	public function link($model)
-	{
-		/**
-		 * 1. Set models
-		 */
-	}
 }
diff --git a/tests/unit/data/ar/Customer.php b/tests/unit/data/ar/Customer.php
index 5c42ecf..5464fc7 100644
--- a/tests/unit/data/ar/Customer.php
+++ b/tests/unit/data/ar/Customer.php
@@ -13,7 +13,7 @@ class Customer extends ActiveRecord
 		return 'tbl_customer';
 	}
 
-	public function orders()
+	public function getOrders()
 	{
 		return $this->hasMany('Order', array('customer_id' => 'id'));
 	}
diff --git a/tests/unit/data/ar/Order.php b/tests/unit/data/ar/Order.php
index 52645de..eb3462d 100644
--- a/tests/unit/data/ar/Order.php
+++ b/tests/unit/data/ar/Order.php
@@ -9,17 +9,17 @@ class Order extends ActiveRecord
 		return 'tbl_order';
 	}
 
-	public function customer()
+	public function getCustomer()
 	{
 		return $this->hasOne('Customer', array('id' => 'customer_id'));
 	}
 
-	public function orderItems()
+	public function getOrderItems()
 	{
 		return $this->hasMany('OrderItem', array('order_id' => 'id'));
 	}
 
-	public function items()
+	public function getItems()
 	{
 		return $this->hasMany('Item', array('id' => 'item_id'))
 			->via('orderItems', function($q) {
@@ -27,7 +27,7 @@ class Order extends ActiveRecord
 			})->orderBy('id');
 	}
 
-	public function books()
+	public function getBooks()
 	{
 		return $this->hasMany('Item', array('id' => 'item_id'))
 			->viaTable('tbl_order_item', array('order_id' => 'id'))
diff --git a/tests/unit/data/ar/OrderItem.php b/tests/unit/data/ar/OrderItem.php
index 27e1c7e..f879749 100644
--- a/tests/unit/data/ar/OrderItem.php
+++ b/tests/unit/data/ar/OrderItem.php
@@ -9,12 +9,12 @@ class OrderItem extends ActiveRecord
 		return 'tbl_order_item';
 	}
 
-	public function order()
+	public function getOrder()
 	{
 		return $this->hasOne('Order', array('id' => 'order_id'));
 	}
 
-	public function item()
+	public function getItem()
 	{
 		return $this->hasOne('Item', array('id' => 'item_id'));
 	}
diff --git a/tests/unit/framework/db/ActiveRecordTest.php b/tests/unit/framework/db/ActiveRecordTest.php
index b918953..a1edbd5 100644
--- a/tests/unit/framework/db/ActiveRecordTest.php
+++ b/tests/unit/framework/db/ActiveRecordTest.php
@@ -105,7 +105,7 @@ class ActiveRecordTest extends \yiiunit\MysqlTestCase
 		$orders = $customer->orders;
 		$this->assertEquals(2, count($orders));
 
-		$orders = $customer->orders()->where('id=3')->all();
+		$orders = $customer->getOrders()->where('id=3')->all();
 		$this->assertEquals(1, count($orders));
 		$this->assertEquals(3, $orders[0]->id);
 	}