Merge branch 'master' into loofah

Conflicts:
	actionpack/CHANGELOG.md
	actionpack/test/controller/integration_test.rb
	actionview/CHANGELOG.md

1 files changed, 10 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid/uuid.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid/uuid.rb
index 89728b0fe2..dd97393eac 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/oid/uuid.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid/uuid.rb
@@ -3,12 +3,21 @@ module ActiveRecord
     module PostgreSQL
       module OID # :nodoc:
         class Uuid < Type::Value # :nodoc:
+          RFC_4122 = %r{\A\{?[a-fA-F0-9]{4}-?
+                             [a-fA-F0-9]{4}-?
+                             [a-fA-F0-9]{4}-?
+                             [1-5][a-fA-F0-9]{3}-?
+                             [8-Bab][a-fA-F0-9]{3}-?
+                             [a-fA-F0-9]{4}-?
+                             [a-fA-F0-9]{4}-?
+                             [a-fA-F0-9]{4}-?\}?\z}x
+
           def type
             :uuid
           end
 
           def type_cast(value)
-            value.presence
+            value.to_s[RFC_4122, 0]
           end
         end
       end