Ruby - rails - 减去日期时间

Question

在ruby/rails中是否有一个方法用于添加/减去日期和时间以及时区,输出是天数,小时数,分钟数和秒数而不是DataTime格式？

t1 = "2012-05-05 00:00:02 -0400"
t2 = "2012-05-04 00:00:00 -0500"

time_diff = (Time.now() - Time.parse(t1)).to_s
#Or
time_diff = (Time.parse(t1) - Time.parse(t2)).to_s

我正在寻找1 Day, 01:59:58 结果应该#of Days HH:MM:SS格式化

Answer 1

据我所知,Ruby或Rails没有内置任何功能.有distance_of_time_in_words,但它给你一个比你似乎寻找更模糊的时间(例如"约7天").

但是,编写一个方法来做这件事是相当简单的.鉴于秒数的差异,这将为您提供差异中的天数,小时数和秒数:

def time_length seconds
  days = (seconds / 1.day).floor
  seconds -= days.days
  hours = (seconds / 1.hour).floor
  seconds -= hours.hours
  minutes = (seconds / 1.minute).floor
  seconds -= minutes.minutes
  { days: days, hours: hours, minutes: minutes, seconds: seconds }
end

time_length(Time.parse(t1) - Time.parse(t2))
#=> {:days=>0, :hours=>23, :minutes=>0, :seconds=>2.0}