Ruby中的"Ago"日期/时间函数

Question

我想知道是否有一种方式在Rails中计算时间戳 - 半分钟前,2分钟前,1天前等等.像twitter实时日期戳.

我想知道Ruby/Rails是否有这种日期时间转换的内置函数？

Answer 1

您可以使用:

10.minutes.ago
2.days.since

或者在您的观点中,您有帮助者:

distance_of_time_in_words(from_time, to_time)
time_ago_in_words(from_time)

检查API以获取详细信息和更多选项.

Answer 2

您可以使用可用方法来获取过去或将来使用的时间ago,since别名from_now和许多可用方法

Time.current
#=> Tue, 20 Sep 2016 15:03:30 UTC +00:00

2.minutes.ago
#=> Tue, 20 Sep 2016 15:01:30 UTC +00:00

2.minutes.since
#=> Tue, 20 Sep 2016 15:05:30 UTC +00:00 

1.month.ago
#=> Sat, 20 Aug 2016 15:03:30 UTC +00:00

1.year.since
#=> Wed, 20 Sep 2017 15:03:30 UTC +00:00 

检查Time类中的所有可用方法

Answer 3

单词时间距离：

from_time = Time.now

distance_of_time_in_words(from_time, from_time + 50.minutes) # => about 1 hour
distance_of_time_in_words(from_time, 50.minutes.from_now) # => about 1 hour
distance_of_time_in_words(from_time, from_time + 15.seconds) # => less than a minute
distance_of_time_in_words(from_time, from_time + 15.seconds, include_seconds: true) # => less than 20 seconds

time_ago_in_words：

time_ago_in_words(3.minutes.from_now) # => 3 minutes
time_ago_in_words(3.minutes.ago) # => 3 minutes
time_ago_in_words(Time.now - 15.hours) # => about 15 hours