object @lesson

if @lesson
  node :lesson do |lesson|
    {id: @lesson.id }
  end
end


if @test_drive
  node :test_drive do |lesson|
    {teacher_id: @test_drive.id}
  end
end


if @normal
  node :normal do |lesson|
    {teacher_id: @normal.teacher_id}
  end
end

if @lesson_package_type
  node :lesson_package_type do |lesson_package_type|
    {package_type: @lesson_package_type.package_type}
  end
end