Question to IRC

sleep_counter_help

def index

    # Sleep.all for current_user
    @sleeps = current_user.sleeps
    # Sleep grouped and sorted in order by month
    @sleep_months = @sleeps.group_by { |s| s.beginning_of_month }.sort { |a,b| a[0] <=> b[0] }

    @array_for_average_sleep_months = @sleep_months.map { |month, sleep| month.strftime("%b") }
    
    @array_for_hours_slept_per_month = ?????
    # ????? for array of hours of sleep per month to 
    @monthly_average_sleep_time = median(@array_for_hours_slept_per_month)

    raise
    respond_to do |format|
      format.html { render action: 'index' }
      format.js
    end
  end
  
  def median(array)
    if array.empty?
      current_user.sleeps.new
    else
      sorted = array.sort
      len = sorted.length
      return (sorted[(len - 1) / 2] + sorted[len / 2]) / 2.0
    end
  end
  
  # data looks like this from @sleep_months:
  #[[Tue, 01 Jan 2013, [#<Sleep id: 10, user_id: 1, hours: 6, created_at: "2013-06-24 02:35:15", updated_at: "2013-06-24 02:35:15", sleep_date: "2013-01-01">]], [Fri, 01 Feb 2013, [#<Sleep id: 11, user_id: 1, hours: 9, created_at: "2013-06-24 02:36:38", updated_at: "2013-06-24 02:36:38", sleep_date: "2013-02-06">, #<Sleep id: 15, user_id: 1, hours: 7, created_at: "2013-06-24 02:38:31", updated_at: "2013-06-24 02:38:31", sleep_date: "2013-02-20">]]