parameterized layouts as "page classes": (See related posts)

   1  
   2    # layout selector
   3    def simple_page
   4      @show_fader = true
   5      return "application"
   6    end 
   7  
   8    # layout selector
   9    def complex_page
  10      @show_fader = false
  11      return "application"
  12    end 
  13  

   1  
   2   layout :simple_page

   1  
   2   show_fader: <%= @show_fader %>