Ordinalize turns a number into an ordinal string used to denote the position in an ordered sequence such as 1st, 2nd, 3rd, 4th.

Examples

ordinalize(1)     # => "1st"
ordinalize(2)     # => "2nd"
ordinalize(1002)  # => "1002nd"
ordinalize(1003)  # => "1003rd"

Source Code

# File merb/core_ext/inflector.rb, line 261
def ordinalize(number)
  if (11..13).include?(number.to_i % 100)
    "#{number}th"
  else
    case number.to_i % 10
      when 1: "#{number}st"
      when 2: "#{number}nd"
      when 3: "#{number}rd"
      else    "#{number}th"
    end
  end
end