为什么Rails总是以正确的时间显示datetime为1/1/2000 [英] Why does Rails always display a datetime as 1/1/2000 - with the correct time

问题描述

这个是让我坚强！数据正确地存储到db（sqlite3）中。但是，当我从记录中显示日期时，Rails似乎将其强制为1/1/2000 - 正确的时间。换句话说，如果我指定为日期时间：2009年12月31日6:00 PM，sqllite3实际上将显示2009-12-31 18:00:00。但是，Rails将显示2000年1月1日06:00 PM（保持正确的时间）的价值。

我已经创建了虚拟属性来处理日期格式（看起来正常工作）。而且，我设置了我的时区：

  config.time_zone ='东部时间（美国和加拿大）'
  

我不得不相信这是一个简单的事情...它完全驱动我坚果！

谢谢！

John

解决方案>

我有同样的问题，使用postgres，感谢user145110的建议使用DateTime类而不是时间。这对我有用我只会补充说，尽管我不得不改变我的迁移使用DateTime，但我仍然可以使用Time和它的方法在与DateTime值进行比较的测试中。换句话说，这个原始迁移：

  t.time：start_time 
  / pre> 
 
 
 ...并使用时间进行样本分配：
  start_time = Time.now.beginning_of_day 
  
 ...它保存好了，但是稍后阅读，年改为2000年。也许这是一个旧的Y2K错误。大声笑。相反，我只是更改迁移：
  t.datetime：start_time 
  pre> 
 
 
 ..我所有的代码都有效。即使这样的作业：
  start_time = Time.zone.now.beginning_of_year.beginning_of_day 
  
尽管如此，我无法感觉到我失去了一些东西。别人用时间来操纵日期吗？
 
This one is driving me nuts!! The data is getting stored into the db (sqlite3) correctly. However, when I display the date from the record, Rails appears to coerce it to 1/1/2000 - with the correct time. In other words, if I specify this as the date time: December 31, 2009 6:00 PM, sqllite3 will in fact show 2009-12-31 18:00:00. But.... Rails will display the value has January 1, 2000 06:00 PM (keeping the correct time).

I have created virtual attributes to handle date formatting (which appear to work correctly). And, I have set my time zone to:   
config.time_zone = 'Eastern Time (US & Canada)'
I have to believe this is something simple...It is totally driving me nuts!!

Thanks!

John
解决方案
I had the same problem, using postgres, and thanks user145110 for the suggestion to use the DateTime class instead of Time. That worked for me. I would only add that though I had to change my migration to use DateTime, I was still able to use Time and its methods in tests that compared against DateTime values. In other words, with this original migration:
t.time :start_time
...and sample assignment using Time:
start_time = Time.now.beginning_of_day
...it saved ok, but upon reading it later, the year was changed to 2000. Maybe it's an old Y2K bug. LOL. Instead, I simply changed the migration:
t.datetime  :start_time
..and all my code worked.  Even assignments like this work:
start_time = Time.zone.now.beginning_of_year.beginning_of_day
I can't help feeling like I missing something, though. Do others use Time to manipulate dates?

                        
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