poro-entries_controller.rb

class Entry < ActiveRecord::Base


  validates :status_weather, inclusion: {
    in: EntryStatus::OPTIONS[:weather]
  }
  validates :status_landform, inclusion: {
    in: EntryStatus::OPTIONS[:landform]
  }


  ....


  def status
    @status ||= EntryStatus.new(status_weather, status_landform)
  end


  def status=(status)
    self[:status_weather]  = status.weather
    self[:status_landform] = status.landform


    @status = status
  end


  ....
end

poro-entry.rb

class Entry < ActiveRecord::Base

    STATUS = {
      weather:  %w(Sunny Rainy Windy Dry),
      landform: %w(Beach Cliff Desert Flat)
    }

    belongs_to :user

    validates_presence_of :distance, :time_period, :date_time
    validates :status_weather, inclusion: { in: STATUS[:weather] }
    validates :status_landform, inclusion: { in: STATUS[:landform] }
    validates_numericality_of :distance, :time_period

    after_create :compare_speed_and_notify_user

    def week
      date = date_time.split(' ')[0]
      Date.strptime(date, '%m/%d/%Y').strftime('%W')
    end

    def speed
      distance / (time_period.to_f / 60)
    end

    private
    
    def compare_speed_and_notify_user
      entries_avg_speed = (Entry.all.sum(&:speed) / Entry.count).round(2)

      if speed > entries_avg_speed
        msg = 'You are doing great. Keep it up, superman. :)'
      else
        msg = 'Most of the users are faster than you. Try harder, dude! :('
      end

      NexmoClient.send_message(
        from: 'Toptal',
        to: user.mobile,
        text: msg
      )
    end
end