On Friday, 29 August 2014 15:01:41 UTC-4, António wrote: > > Dear all, > > > > I am a new "Ruby/Ruby on Rails" programmer. I am not sure this is the > correct forum for my question. If this is not the correct forum, please > indicate me a more appropriate one. > > > > > > When my application implements a URL, an array, @session, is used in > several methods of a first controller. The application redirects to another > page, making a second controller being invoked. This controller does not > use the array. When the method of the second controller ends, a layout is > implicitly rendered. The layout has the following code: > > > > ... > > <body> > > <% if @session.length == 0 then %> > > ... > > > > I got the following error message when trying to implement the URL: undefined > method `length' for nil:NilClass. > > > > What should I do in order to the array be recognized by the second > controller? > > >
Controllers and their instance variables are torn down after each request; setting @session in one won't have any effect on subsequent requests. You may want to look into the built-in `session` helper, which uses signed cookies: http://guides.rubyonrails.org/action_controller_overview.html#session The Guides site overall will be very useful to you. --Matt Jones -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/f791faa7-2699-49c8-a794-5330e5cc00df%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
