demo_app/my_platform/db/migrate/20150325105862_create_events.your_platform.rb
# This migration comes from your_platform (originally 20130207214331)
class CreateEvents < ActiveRecord::Migration[4.2]
def change
create_table :events do |t|
t.string :name
t.text :description
t.datetime :start_at
t.datetime :end_at
t.timestamps
end
end
end