doc/technical/archived_migrations/20170501114013_modify_email_prefs.rb
class ModifyEmailPrefs < ActiveRecord::Migration[5.0]
def change
add_column :email_preferences, :challenges_followed, :boolean, default: true
add_column :email_preferences, :mentions, :boolean, default: true
add_column :email_preferences, :receive_every_email, :boolean, default: false
add_column :email_preferences, :receive_daily_digest, :boolean, default: true
add_column :email_preferences, :receive_weekly_digest, :boolean, default: false
end
end