From 3ba4a8c9b2fe1658c2cf18d644f034e0ece4fb27 Mon Sep 17 00:00:00 2001
From: Benjamin Fleischer <github@benjaminfleischer.com>
Date: Sun, 23 Apr 2017 14:17:06 -0500
Subject: [PATCH] Always return an enumerator

---
 lib/active_model/serializer.rb | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/active_model/serializer.rb b/lib/active_model/serializer.rb
index 6e1d4bfe..acb23b71 100644
--- a/lib/active_model/serializer.rb
+++ b/lib/active_model/serializer.rb
@@ -332,10 +332,9 @@ module ActiveModel
     # @param [JSONAPI::IncludeDirective] include_directive (defaults to the
     #   +default_include_directive+ config value when not provided)
     # @return [Enumerator<Association>]
-    #
     def associations(include_directive = ActiveModelSerializers.default_include_directive, include_slice = nil)
       include_slice ||= include_directive
-      return unless object
+      return Enumerator.new unless object
 
       Enumerator.new do |y|
         self.class._reflections.values.each do |reflection|