How we might generate work sessions

gistfile1.txt

class Rotation
  has_many :shift_cycles
  
  def template
    # given some shift_cycles:
    #-------------------------------+
    # days_on | days_off | shift_id |
    #-------------------------------+
    #    3    |     1    |    5
    #    2    |     1    |    6
    #
    # This method should return:
    # [
    #  [T,5],
    #  [T,5],
    #  [T,5],
    #  [F,5],
    #  [T,6],
    #  [T,6],
    #  [F,6]
    # ]
  end
  
  def template_index(date)
    ( self.starts_on - date ).to_i.abs % template.length
  end
  
  # Given a date:
  # working? => template[template_index(date)][0]  (T or F)
  # shift_id => template[template_index(date)][1]  ( 5 or 6 )
end