1 files changed, 19 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid/cidr.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid/cidr.rb
index 158468fe5b..534961a414 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/oid/cidr.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid/cidr.rb
@@ -18,8 +18,26 @@ module ActiveRecord
             end
           end
 
+          def type_cast_for_database(value)
+            if IPAddr === value
+              "#{value.to_s}/#{value.instance_variable_get(:@mask_addr).to_s(2).count('1')}"
+            else
+              value
+            end
+          end
+
           def cast_value(value)
-            ConnectionAdapters::PostgreSQLColumn.string_to_cidr value
+            if value.nil?
+              nil
+            elsif String === value
+              begin
+                IPAddr.new(value)
+              rescue ArgumentError
+                nil
+              end
+            else
+              value
+            end
           end
         end
       end