add setter for relationships

Author: tuyakhov

README.md

@@ -12,13 +12,13 @@ The preferred way to install this extension is through [composer](http://getcomp
 Either run
 
 ```
-php composer.phar require --prefer-dist tuyakhov/yii2-json-api "dev-master"
+php composer.phar require --prefer-dist tuyakhov/yii2-json-api "*"
 ```
 
 or add
 
 ```
-"tuyakhov/yii2-json-api": "dev-master"
+"tuyakhov/yii2-json-api": "*"
 ```
 
 to the require section of your `composer.json` file.
@@ -52,8 +52,9 @@ class Controller extends \yii\rest\Controller
 Model:
 ```php
 use tuyakhov\jsonapi\ResourceTrait;
+use tuyakhov\jsonapi\ResourceInterface;
 
-class User extends ActiveRecord
+class User extends ActiveRecord implements ResourceInterface
 {
     use ResourceTrait;
 }

src/ResourceInterface.php

@@ -11,6 +11,8 @@ public function getResourceAttributes(array $fields = []);
 
     public function getResourceRelationships();
 
+    public function setResourceRelationship($name, $relationship);
+
     public function getLinks();
 
     public function getMeta();

src/ResourceTrait.php

@@ -7,6 +7,7 @@
 
 use yii\base\Arrayable;
 use yii\db\ActiveRecordInterface;
+use yii\db\BaseActiveRecord;
 use yii\helpers\ArrayHelper;
 use yii\helpers\Inflector;
 
@@ -71,6 +72,24 @@ public function getResourceRelationships()
         return $relationships;
     }
 
+    /**
+     * @param string $name the case sensitive name of the relationship.
+     * @param $relationship
+     */
+    public function setResourceRelationships($name, $relationship)
+    {
+        /** @var $this BaseActiveRecord */
+        $this->unlinkAll($name);
+        if (!is_array($relationship)) {
+            $relationship = [$relationship];
+        }
+        foreach ($relationship as $key => $value) {
+            if ($value instanceof ActiveRecordInterface) {
+                $this->link($name, $value);
+            }
+        }
+    }
+
     /**
      * @param array $fields
      * @param array $expand