Get person's age in Ruby

Question

I\'d like to get a person\'s age from its birthday. now - birthday / 365 doesn\'t work, because some years have 366 days. I came up with the following code:

Answer 1

I had to deal with this too, but for months. Became way too complicated. The simplest way I could think of was:

def month_number(today = Date.today)
  n = 0
  while (dob >> n+1) <= today
    n += 1
  end
  n
end

You could do the same with 12 months:

def age(today = Date.today)
  n = 0
  while (dob >> n+12) <= today
    n += 1
  end
  n
end

This will use Date class to increment the month, which will deal with 28 days and leap year etc.