Or “Use params, not @params":http://weblog.rubyonrails.com/articles/2006/04/25/use-params-not-params. Good to know, since “the book”:http://www.pragmaticprogrammer.com/title/rails/ uses both.

bq. Basically, a good rule of thumb here is don’t use an instance variable in your controller or view unless you created that instance variable.

Ok. Got it.