Trouble maintaining session data through render :action

rubyonrails-talk
1

flash[:notice] is an entirely different beast than
error_messages_for. error_messages_for are used by models. They are
the things that get created when your validations fail. flash on
the other hand, is something that you can use in your controllers to
provide messages back to your users in the view. Many people
actually use :info, :warning, :error in flash and have them styled
differently in CSS. To see if your flash message is working
correctly, do something like

<% if flash[:notice] && flash[:notice].strip != '' %> <div style="color: red"> <%= flash[:notice] %> </div> <% end %>

Peace, Phillip

2

That was your actual misunderstanding: render :action => 'foo' doesn't run the foo action. It just takes the template associated with the foo action and renders it.

Fred