search for: o_system

...have a resource-based controller. See controller class Admin::OSystemsController < Admin::BaseController def index ....... end def edit ......... end def update .......... end end Resource is added to routes.rb like map.namespace :admin do |admin| ............ admin.resources :o_systems, :only => [:index, :edit, :update] ............ end I go to edit page (see view) ......... <% form_for([:admin, @o_system]) do |f| %> <%= f.error_messages %> ............. <% end %> I press submit and exception is thrown: [b]ActionController::UnknownAction (No action res...