From 1881182cd9f4869cac01265e3195deba8206345c Mon Sep 17 00:00:00 2001
From: Tobias Nyholm <tobias.nyholm@gmail.com>
Date: Tue, 28 Mar 2017 19:20:31 +0200
Subject: [PATCH] Bugfix when value is null (#155)

---
 Changelog.md                | 6 ++++++
 TaggablePSR6ItemAdapter.php | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/Changelog.md b/Changelog.md
index 0f6d85e..73a420a 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -4,6 +4,12 @@ The change log describes what is "Added", "Removed", "Changed" or "Fixed" betwee
 
 ## UNRELEASED
 
+## 0.5.1
+
+### Fixed
+
+* Bug on `TaggablePSR6ItemAdapter::isItemCreatedHere` where item value was `null`.
+
 ## 0.5.0
 
 ### Added
diff --git a/TaggablePSR6ItemAdapter.php b/TaggablePSR6ItemAdapter.php
index 48b06b9..9c5be90 100644
--- a/TaggablePSR6ItemAdapter.php
+++ b/TaggablePSR6ItemAdapter.php
@@ -230,6 +230,6 @@ private function initializeTags()
      */
     private function isItemCreatedHere($rawItem)
     {
-        return is_array($rawItem) && isset($rawItem['value']) && isset($rawItem['tags']) && count($rawItem) === 2;
+        return is_array($rawItem) && array_key_exists('value', $rawItem) && array_key_exists('tags', $rawItem) && count($rawItem) === 2;
     }
 }