db/migrate/20111130145831_add_metadata_to_sessions.rb
class AddMetadataToSessions < ActiveRecord::Migration[4.2]
def change
add_column :sessions, :data_type, :string
add_column :sessions, :instrument, :string
add_column :sessions, :phone_model, :string
add_column :sessions, :os_version, :string
end
end