Ruby natural language format

gistfile1.rb

require 'date'

class DateTime

  def to_human(opts = {})
    date = self
    today = opts[:today] || DateTime.now

    # Difference between `today` and `date`
    diff = (date.to_date - today.to_date).to_i
    # How many days till the end of the week?
    till_end_of_week = (6 - date.strftime("%w").to_i)

    case diff
      when 2
        "Day after tomorrow"
      when 1
        "Tomorrow"
      when 0
        "Today"
      when -1
        "Yesterday"
      when (1..(diff-till_end_of_week)+3)
        # Works, mostly. A couple of issues when referencing dates past the current week
        "This " + date.strftime("%A")
      when ((diff-till_end_of_week)+3..(diff-till_end_of_week)+10)
        "Next " + date.strftime("%A")
      # Put last week here
      else
        date.strftime("%B %d, %Y %l:%M %p")
    end
  end
  alias :to_natural :to_human

end

time = Time.now
date = DateTime.new(2012,5,16,time.strftime("%H").to_i,time.strftime("%M").to_i)
puts date.to_human(today: DateTime.new(2012,5,6,time.strftime("%H").to_i,time.strftime("%M").to_i))

# Day of week date.strftime("%w")
# Day date.strftime("%A")
# Else format date.strftime("%B %d, %Y %l:%M %p")