From 8d6ae91d8b5bd50c2718f6cb4f2f540e4fc8edd3 Mon Sep 17 00:00:00 2001
From: Michael Frister <michael+git@frister.net>
Date: Wed, 30 Apr 2014 15:32:20 +0200
Subject: [PATCH] Add patch to fix Rails' hash types with Ruby 2.1.1

Might also help us with Ruby 2.2 until we have Rails 4.
---
 config/initializers/10-patches.rb | 35 +++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/config/initializers/10-patches.rb b/config/initializers/10-patches.rb
index d05d06a124..d937271f78 100644
--- a/config/initializers/10-patches.rb
+++ b/config/initializers/10-patches.rb
@@ -233,6 +233,41 @@ module ActiveRecord
   end
 end
 
+
+# Patches to fix Hash subclasses not preserving the class on reject and select
+# on Ruby 2.1.1. Apparently this will be standard behavior in Ruby 2.2, so
+# check please verify things work as expected before removing this.
+#
+# Rails 3.2 won't receive a fix for this, but Rails 4.x has this fixed.
+# Once we're using Rails 4, we can probably remove this.
+#
+# See
+# * https://www.ruby-lang.org/en/news/2014/03/10/regression-of-hash-reject-in-ruby-2-1-1/
+# * https://github.com/rails/rails/issues/14188
+# * https://github.com/rails/rails/pull/14198/files
+module ActiveSupport
+  class HashWithIndifferentAccess
+    def select(*args, &block)
+      dup.tap { |hash| hash.select!(*args, &block) }
+    end
+
+    def reject(*args, &block)
+      dup.tap { |hash| hash.reject!(*args, &block) }
+    end
+  end
+
+  class OrderedHash
+    def select(*args, &block)
+      dup.tap { |hash| hash.select!(*args, &block) }
+    end
+
+    def reject(*args, &block)
+      dup.tap { |hash| hash.reject!(*args, &block) }
+    end
+  end
+end
+
+
 module CollectiveIdea
   module Acts
     module NestedSet