demo_app/my_platform/db/migrate/20160601212729_add_hidden_teaser_box_to_nav_nodes.your_platform.rb
# This migration comes from your_platform (originally 20160601212658)
class AddHiddenTeaserBoxToNavNodes < ActiveRecord::Migration[4.2]
def change
add_column :nav_nodes, :hidden_teaser_box, :boolean
end
end