class Kuroko2::Api::JobDefinitionsController

def job_schedules(params, definition)
  cron_strings = params.permit(cron: []).fetch(:cron, [])
  cron_strings.map do |cron|
    schedule = definition.job_schedules.find_or_create_by(cron: cron)
    raise Http::UnprocessableEntity.new("#{cron}: #{schedule.errors.full_messages.join}") unless schedule.valid?
    schedule
  end
end