ROR + TodayDate以UTC格式 [英] ROR + TodayDate in UTC Format

问题描述

如果我有 @today = Date.today.to_s ，那么如何将 @today转换为UTC （仅适用日期）？
这里我只需要日期例如2011-03-08即08年3月08日。请建议一下？

If I have @today = Date.today.to_s, how do I convert @today into UTC (with the appropriate date only)? Here I need is only date for example 2011-03-08 ie 08 March 2011. Please suggest something ?

急性我正在寻找昨天的日期？

Acutally I am looking for Yesterday date ??

推荐答案

您需要将其转换为时间或者直接使用时间），然后调用 Time＃utc ：

You'll need to convert it to a Time object (or just use Time anyway) and then call Time#utc:

irb > Time.now
 => Tue Mar 08 15:32:36 +1100 2011 
irb > Time.now.utc
 => Tue Mar 08 04:32:40 UTC 2011 

然后您可以格式化，但需要它： / p>

You can then format it however you need it:

irb > @today = Time.now.utc
 => Tue Mar 08 04:34:25 UTC 2011 
irb > @today.strftime("%Y-%m-%d")
 => "2011-03-08" 

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