gistfile1.md

in QuestionsController

if @question.set(:deleted => true)
  flash[:notice] = render partial: 'notice_undo_delete_question'

  redirect_to :back
else
  render :edit
end

in application.html.erb (layout)

<% if flash[:notice] %>
  <div class="notification"><%= flash[:notice] %></div>
<% end %>
<%= yield %>

questions/_notice_undo_delete_question.html.erb

/ Here goes some beautiful styling
you have deleted the questions
/ here too