Hi, I have a view in which i have the following collection_select <%= f.collection_select :category_id, current_account.categories.find (:all), :id, :name, {:prompt => "-Select-", :include_blank => true} %> and the current_account method in authentication.rb is def current_account @current_account ||= Account.find_by_subdomain(current_subdomain) end But i get the following error when i try to open the page with that collection_select in it undefined local variable or method `current_subdomain'' for #<Project: 0x3430e60> Does this mean i have to make this method available to all my models? i also tried moving "current_account.categories.find(:all)" to the controller and storing it in an instance variable and using the instance variable here instead like @categories = current_account.categories.find(:all) <%= f.collection_select :category_id, @categories, :id, :name, {:prompt => "-Select-", :include_blank => true} %> That too threw the same error. Any idea whats the ideal way to handle this?