class PeriodicTaskGroup < ActiveRecord::Base has_many :tasks, :dependent => :destroy PeriodDays = 7 def has_next_task? return false if self.tasks.empty? return false if self.tasks.first.due_date.nil? return true end def create_next_task template_task = self.tasks.first self.next_task_date ||= template_task.due_date + PeriodDays next_task = template_task.dup next_task.due_date = self.next_task_date next_task.save self.next_task_date += PeriodDays self.save end end