From 25f1cbdecd4f506b46a6c476f18074dafdb581f2 Mon Sep 17 00:00:00 2001
From: Christophe Maximin <christophe.maximin@gmail.com>
Date: Wed, 7 Nov 2018 22:38:41 +0000
Subject: Guard Enums against definitions with blank label names

---
 activerecord/lib/active_record/enum.rb | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'activerecord/lib/active_record')

diff --git a/activerecord/lib/active_record/enum.rb b/activerecord/lib/active_record/enum.rb
index 3d97e4e513..3a600835e1 100644
--- a/activerecord/lib/active_record/enum.rb
+++ b/activerecord/lib/active_record/enum.rb
@@ -218,6 +218,10 @@ module ActiveRecord
           MSG
           raise ArgumentError, error_message
         end
+
+        if values.is_a?(Hash) && values.keys.any?(&:blank?) || values.is_a?(Array) && values.any?(&:blank?)
+          raise ArgumentError, "Enum label name must not be blank."
+        end
       end
 
       ENUM_CONFLICT_MESSAGE = \
-- 
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