ruby on rails - getting the flash hash to persist through redirects

Question

My basic use case is do some processing, set flash[:notice], and then redirect to a new page. From what I can tell, redirects reset the flash tag (please correct me if I'm wrong). Is there a way to gain persistence? Using sessions isn't an option, and I have hacked around the problem using cookies, but I think there's got to be a better way.

question from:https://stackoverflow.com/questions/1579857/getting-the-flash-hash-to-persist-through-redirects

Answer 1

The flash hash persists for exactly one redirect or render. So you should be fine with the default settings.

If you need to keep the flash hash for another request/redirect, you can call flash.keep.

flash.keep # keep the entire flash hash around for an extra request.
flash.keep(:notice) # keep just flash[:notice] for an extra request.