Added support for relation by array attributes

framework/CHANGELOG.md

@@ -75,6 +75,7 @@ Yii Framework 2 Change Log
 - Enh #87: Helper `yii\helpers\Security` converted into application component, cryptographic strength improved (klimov-paul)
 - Enh #422: Added Support for BIT(M) data type default values in Schema (cebe)
 - Enh #1160: Added $strict parameter to Inflector::camel2id() to handle consecutive uppercase chars (schmunk)
+- Enh #1249: Added support for Active Record relation via array attributes (klimov-paul)
 - Enh #1452: Added `Module::getInstance()` to allow accessing the module instance from anywhere within the module (qiangxue)
 - Enh #2264: `CookieCollection::has()` will return false for expired or removed cookies (qiangxue)
 - Enh #2435: `yii\db\IntegrityException` is now thrown on database integrity errors instead of general `yii\db\Exception` (samdark)

framework/db/ActiveRelationTrait.php

@@ -240,8 +240,17 @@ trait ActiveRelationTrait
 
             $link = array_values(isset($viaQuery) ? $viaQuery->link : $this->link);
             foreach ($primaryModels as $i => $primaryModel) {
+                if ($this->multiple && count($link) < 2 && is_array($keys = $primaryModel->{reset($link)})) {
+                    $value = [];
+                    foreach ($keys as $key) {
+                        if (isset($buckets[$key])) {
+                            $value = array_merge($value, $buckets[$key]);
+                        }
+                    }
+                } else {
                     $key = $this->getModelKey($primaryModel, $link);
                     $value = isset($buckets[$key]) ? $buckets[$key] : ($this->multiple ? [] : null);
+                }
                 if ($primaryModel instanceof ActiveRecordInterface) {
                     $primaryModel->populateRelation($name, $value);
                 } else {
@@ -414,9 +423,13 @@ trait ActiveRelationTrait
             $attribute = reset($this->link);
             foreach ($models as $model) {
                 if (($value = $model[$attribute]) !== null) {
+                    if (is_array($value)) {
+                        $values = array_merge($values, $value);
+                    } else {
                         $values[] = $value;
                     }
                 }
+            }
         } else {
             // composite keys
             foreach ($models as $model) {

tests/unit/extensions/sphinx/ExternalActiveRelationTest.php

@@ -6,6 +6,7 @@ use yiiunit\data\ar\sphinx\ActiveRecord;
 use yiiunit\data\ar\ActiveRecord as ActiveRecordDb;
 use yiiunit\data\ar\sphinx\ArticleIndex;
 use yiiunit\data\ar\sphinx\ArticleDb;
+use yiiunit\data\ar\sphinx\TagDb;
 
 /**
  * @group sphinx
@@ -34,11 +35,14 @@ class ExternalActiveRelationTest extends SphinxTestCase
         $this->assertEquals(1, count($article->relatedRecords));
 
         // has many :
-        /*$this->assertFalse($article->isRelationPopulated('tags'));
+        $this->assertFalse($article->isRelationPopulated('tags'));
         $tags = $article->tags;
         $this->assertTrue($article->isRelationPopulated('tags'));
-        $this->assertEquals(3, count($tags));
-        $this->assertTrue($tags[0] instanceof TagDb);*/
+        $this->assertEquals(count($article->tag), count($tags));
+        $this->assertTrue($tags[0] instanceof TagDb);
+        foreach ($tags as $tag) {
+            $this->assertTrue(in_array($tag->id, $article->tag));
+        }
     }
 
     public function testFindEager()
@@ -52,10 +56,20 @@ class ExternalActiveRelationTest extends SphinxTestCase
         $this->assertTrue($articles[1]->source instanceof ArticleDb);
 
         // has many :
-        /*$articles = ArticleIndex::find()->with('tags')->all();
+        $articles = ArticleIndex::find()->with('tags')->all();
         $this->assertEquals(2, count($articles));
         $this->assertTrue($articles[0]->isRelationPopulated('tags'));
-        $this->assertTrue($articles[1]->isRelationPopulated('tags'));*/
+        $this->assertTrue($articles[1]->isRelationPopulated('tags'));
+        foreach ($articles as $article) {
+            $this->assertTrue($article->isRelationPopulated('tags'));
+            $tags = $article->tags;
+            $this->assertEquals(count($article->tag), count($tags));
+            //var_dump($tags);
+            $this->assertTrue($tags[0] instanceof TagDb);
+            foreach ($tags as $tag) {
+                $this->assertTrue(in_array($tag->id, $article->tag));
+            }
+        }
     }
 
     /**