Date within range + Rails

Here is a basic example to determine whether todays date feature within a particular range.

Creating an instance method inside model, this method will return true or false

def notification_required?
    start_date = 15.days.ago.to_date
    end_date = Date.today
    (start_date..end_date).include_with_range?(self.last_notification_sent_at)
  end

And to use this method

@user.notification_required?