From 2581e3347e09a7fdc7e0c23192614ef071b32b1a Mon Sep 17 00:00:00 2001
From: Evaldo Barbosa <evaldobarbosa@gmail.com>
Date: Thu, 9 Feb 2017 12:11:15 -0300
Subject: [PATCH] solves json_encode problem. When an external thing (like a
 script or framework) not calling toJson method, json is returned empty

---
 lib/ArangoDBClient/Document.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/ArangoDBClient/Document.php b/lib/ArangoDBClient/Document.php
index b1dddc52..9194455f 100644
--- a/lib/ArangoDBClient/Document.php
+++ b/lib/ArangoDBClient/Document.php
@@ -19,7 +19,7 @@
  * @package   ArangoDBClient
  * @since     0.2
  */
-class Document
+class Document implements \JsonSerializable
 {
     /**
      * The document id (might be NULL for new documents)
@@ -233,6 +233,11 @@ public function toJson(array $options = [])
         return json_encode($this->getAll($options));
     }
 
+    public function jsonSerialize()
+    {
+        return $this->getAll([]);
+    }
+
     /**
      * Returns the document as a serialized string
      *