From 184018868518fbb5f77cae646e4bb26f3777ec09 Mon Sep 17 00:00:00 2001
From: Ben Speakman <ben@d-formed.net>
Date: Thu, 16 Apr 2015 14:10:43 +0100
Subject: [PATCH] Implement __isset() magic method

This is primarily to allow Twig to access the properties of Item
http://twig.sensiolabs.org/doc/recipes.html#using-dynamic-object-properties
---
 src/Moltin/Cart/Item.php | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/Moltin/Cart/Item.php b/src/Moltin/Cart/Item.php
index 418c8eb..42e32e6 100755
--- a/src/Moltin/Cart/Item.php
+++ b/src/Moltin/Cart/Item.php
@@ -62,6 +62,19 @@ public function __get($param)
 
         return array_key_exists($param, $this->data) ? $this->data[$param] : null;
     }
+    
+    /**
+     * Return the existence of protected methods
+     * 
+     * @param  any $param
+     * @return mixed
+     */
+    public function __isset($param)
+    {
+        if ($param == 'identifier') return true;
+
+        return array_key_exists($param, $this->data) ? true : false;
+    }
 
     /**
      * Update data array using set magic method