link_to_back helper

It will take referer, @params and redirect you back to same page you been before.

Useful then sorting search results, paging, editing different objects via same _form...
This is code for helper file, i prefer application helper.

def link_to_back (description = "Back")
   referer = request.env["HTTP_REFERER"]
   return false if !referer
   getIt = request.env["REQUEST_URI"].split("?")[1]
   if getIt.nil?
     getIt = ""
     else
       getIt = "?" + getIt if !getIt.match(/\?/)
   end
   link_to description, referer + getIt
end


then just do:
<%= link_to_back %> or
<%= link_to_back "Cancel" %>