Limit the number of records in table in Rails

Question

I want to limit the number of records a table can hold in rails. If I have a notifications table, how can I make it work to hold only 50 records at a time. So, if a new record is added the first one is deleted and the new one is saved as the 50th.

Is there any cool rails method to do this automatically or do I have to implement it manually in my model when I'm creating a new notification?

Answer 1

I think it's quite simple to implement on own.

 Notification.first.destroy if Notification.count > 50

use it in after_commit callback or whatever cb is best