gistfile1.rb

  def tabs_for_teacher
    tabs =
      [
        tab('Home', :teacher_home){|c| c.class.name =~ %r/unit|home/i and request.request_uri !~ %r/classroom/},
        tab('Classes', :teacher_classrooms){|c| request.request_uri =~ %r/classroom/ and request.request_uri !~ %r/teacher_tools/}
      ]

#
# MEGA HACK - and won't work once there are more units, or even more of the
# same unit... sigh
#
    classrooms = current_user.classrooms

    unless classrooms.empty?
      classroom = classrooms.first

      href = unit_energy_classroom_teacher_tools_path(:classroom_id => classroom.id)
      tabs << tab('Teacher Tools', href)
    end

    tabs
  end
  helper_method 'tabs_for_teacher'