Adding associate for embedsOne, fixes #215

src/Jenssegers/Mongodb/Relations/EmbedsOne.php

@@ -35,6 +35,25 @@ class EmbedsOne extends EmbedsOneOrMany {
         return ($embedded and $embedded[$primaryKey] == $key);
     }
 
+    /**
+     * Associate the model instance to the given parent, without saving it to the database.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function associate(Model $model)
+    {
+        // Create a new key if needed.
+        if ( ! $model->getAttribute('_id'))
+        {
+            $model->setAttribute('_id', new MongoId);
+        }
+
+        $this->setEmbedded($model->getAttributes());
+
+        return $model;
+    }
+
     /**
      * Save a new model and attach it to the parent model.
      *
@@ -51,7 +70,7 @@ class EmbedsOne extends EmbedsOneOrMany {
 
         $result = $this->query->update(array($this->localKey => $model->getAttributes()));
 
-        if ($result) $this->setEmbedded($model->getAttributes());
+        if ($result) $this->associate($model);
 
         return $result ? $model : false;
     }
@@ -66,7 +85,7 @@ class EmbedsOne extends EmbedsOneOrMany {
     {
         $result = $this->query->update(array($this->localKey => $model->getAttributes()));
 
-        if ($result) $this->setEmbedded($model->getAttributes());
+        if ($result) $this->associate($model);
 
         return $result ? $model : false;
     }

tests/EmbeddedRelationsTest.php

@@ -414,6 +414,21 @@ class EmbeddedRelationsTest extends TestCase {
         $this->assertEquals('Jim Doe', $user->father->name);
     }
 
+    public function testEmbedsOneAssociate()
+    {
+        $user = User::create(array('name' => 'John Doe'));
+        $father = new User(array('name' => 'Mark Doe'));
+
+        $father->setEventDispatcher($events = Mockery::mock('Illuminate\Events\Dispatcher'));
+        $events->shouldReceive('until')->times(0)->with('eloquent.saving: '.get_class($father), $father);
+
+        $father = $user->father()->associate($father);
+        $father->unsetEventDispatcher();
+
+        $this->assertNotNull($user->_father);
+        $this->assertEquals('Mark Doe', $user->father->name);
+    }
+
     public function testEmbedsOneDelete()
     {
         $user = User::create(array('name' => 'John Doe'));