How can I run updates in batches in Rails 3/4?

Question

I need to mass-update many thousands of records, and I would like to process the updates in batches. First, I tried:

Foo.where(bar: \'bar\').find_in_batches.upda         


        

Answer 1

I've written a small method to invoke update_all in batches:

https://gist.github.com/VarunNatraaj/420c638d544be59eef85

Hope it is useful! :)