Type is changed from Rails 4.2

Author: prathamesh-sonpatki

lib/arjdbc/postgresql/oid_types.rb

@@ -7,6 +7,7 @@ module PostgreSQL
     module OIDTypes
 
       OID = ActiveRecord::ConnectionAdapters::PostgreSQL::OID
+      Type = ActiveRecord::Type if ActiveRecord::VERSION.to_s >= '4.2'
 
       def get_oid_type(oid, fmod, column_name)
         type_map.fetch(oid, fmod) {