fixed problem with sorting by id in elasticsearch

extensions/elasticsearch/QueryBuilder.php

@@ -116,7 +116,7 @@ class QueryBuilder extends \yii\base\Object
 				$column = $name;
 			}
 			if ($column == ActiveRecord::PRIMARY_KEY_NAME) {
-				$column = '_id';
+				$column = '_uid';
 			}
 
 			// allow elasticsearch extended syntax as described in http://www.elasticsearch.org/guide/reference/api/search/sort/

tests/unit/extensions/elasticsearch/ActiveRecordTest.php

@@ -231,11 +231,11 @@ class ActiveRecordTest extends ElasticSearchTestCase
 
 	public function testFindEagerViaRelation()
 	{
-		// this test is currently failing randomly because of https://github.com/yiisoft/yii2/issues/1310
 		$orders = Order::find()->with('items')->orderBy('create_time')->all();
 		$this->assertEquals(3, count($orders));
 		$order = $orders[0];
 		$this->assertEquals(1, $order->id);
+		$this->assertTrue($order->isRelationPopulated('items'));
 		$this->assertEquals(2, count($order->items));
 		$this->assertEquals(1, $order->items[0]->id);
 		$this->assertEquals(2, $order->items[1]->id);

tests/unit/framework/ar/ActiveRecordTestTrait.php

@@ -295,11 +295,6 @@ trait ActiveRecordTestTrait
 
 	public function testFindLimit()
 	{
-		if (getenv('TRAVIS') == 'true' && $this instanceof \yiiunit\extensions\elasticsearch\ActiveRecordTest) {
-			// https://github.com/yiisoft/yii2/issues/1317
-			$this->markTestSkipped('This test is unreproduceable failing on travis-ci, locally it is passing.');
-		}
-
 		/** @var TestCase|ActiveRecordTestTrait $this */
 		// all()
 		$customers = $this->callCustomerFind()->all();
@@ -420,11 +415,6 @@ trait ActiveRecordTestTrait
 
 	public function testFindLazyVia()
 	{
-		if (getenv('TRAVIS') == 'true' && $this instanceof \yiiunit\extensions\elasticsearch\ActiveRecordTest) {
-			// https://github.com/yiisoft/yii2/issues/1317
-			$this->markTestSkipped('This test is unreproduceable failing on travis-ci, locally it is passing.');
-		}
-
 		/** @var TestCase|ActiveRecordTestTrait $this */
 		/** @var Order $order */
 		$order = $this->callOrderFind(1);