moodtracker/mood.rb

class Mood < ActiveRecord::Base
  default_scope { order(:recorded_at) }
  validates_presence_of :mode
  validates_presence_of :recorded_at

  def self.log
    return if Mood.count < 1

    first_mood = Mood.first.recorded_at.to_date
    first_monday = first_mood - (first_mood.wday - 1)

    current_date = first_monday
    current_mode = nil
    log_mood = []
    Mood.all.each do |mood|
      while current_date < mood.recorded_at.to_date do
        log_mood << [ current_date.to_s, current_mode ]
        current_date += 1
      end
      current_mode = mood.mode
    end
    while current_date <= Date.today do
      log_mood << [ current_date.to_s, current_mode ]
      current_date += 1
    end
    log_mood.each_slice(7).to_a
  end
end