做一个Time.local对象，它包含在Ruby中

Question

嗨Date对象所以在红宝石我尝试做一个程序，需要一个参数，并且正是“X”个月前返回的日期，我可以说这一年月份和日期，但无法显示小时分钟和秒钟。有什么建议么？由于

require "Time" 
require "Date" 
class "Time" 
def months_ago(n) 
y = Time.now.year 
d = Time.now.day 
mn = Time.now.month 
s = Time.now.sec 
h = Time.now.hour 
m = Date.civil(y, mn, d) 
m <<(n) 
end 
end 
a = Time.new.months_ago(4) 
puts a 

Answer 1

使用日期时间：

require 'date' 
puts DateTime.now << 4