db/migrate/20111202133129_add_start_and_end_time_to_session.rb
class AddStartAndEndTimeToSession < ActiveRecord::Migration[4.2]
def change
add_column :sessions, :start_time, :datetime
add_column :sessions, :end_time, :datetime
add_index :sessions, :start_time
add_index :sessions, :end_time
end
end