Avoid "unknown OID" warnings from Postgres driver

config/initializers/postgresql_adapter.rb

@@ -58,6 +58,20 @@ if defined?(ActiveRecord::ConnectionAdapters::PostgreSQLAdapter)
         rescue
           nil
         end
+
+        def initialize_type_map_with_enums
+          OID.alias_type "format_enum", "text"
+          OID.alias_type "gpx_visibility_enum", "text"
+          OID.alias_type "note_status_enum", "text"
+          OID.alias_type "note_event_enum", "text"
+          OID.alias_type "nwr_enum", "text"
+          OID.alias_type "user_role_enum", "text"
+          OID.alias_type "user_status_enum", "text"
+
+          initialize_type_map_without_enums
+        end
+
+        alias_method_chain :initialize_type_map, :enums
       end
 
       class PostgreSQLColumn