Rails 时区和夏令时 [英] Rails timezone and Daylight saving time

问题描述

有一段时间我试图了解这个时区时间是如何工作的，我有一个问题:

for a while I´m trying to understand how this timezone times will work, and I had a question:

今天在我的国家/地区，我们处于夏令时 (GMT-2).所以我的应用程序的用户输入一个时间，比如上午 11:00 并发布表单.据我所知，rails 会将这个日期转换为 UTC 并保存在数据库中(在我的例子中是 mysql)，例如:01:00PM UTC.

Today in my country, we are in Daylight saving time (GMT-2). So the user of my application enter a time, like 11:00AM and post the form. Far as I know, rails will convert this date to UTC and save in the database (mysql in my case), like: 01:00PM UTC.

当我恢复该记录时，我必须转换为当地时间才能显示.好吗?

When I recover that record, I had to convert to local time to display. Ok?

我的问题是，让我们假设这个日期/时间代表未来的日期/时间，当我的国家从夏令时(GMT-3)出来时.Rails 会保存 01:00PM UTC?今天，在夏令时，当地时间如何?未来，这个当地时间会怎样?

My question is, lets suppose that this date/time represents a date/time in future, when my country gets out from summer time (GMT-3). Rails will save 01:00PM UTC? Today, in Daylight saving time, how will be the local time? And in the future, how will be this local time?

基本上，我总是需要在上午 11:00 向用户显示.

Basically, I always need to display to user 11:00AM.

谢谢.

推荐答案

7 个月后您提出要求，但也许 skip_time_zone_conversion_for_attributes= 会有所帮助 - 它告诉 AcitveRecord 在存储或检索时不要转换时区.请参阅 ActiveRecord Timestamp 显示示例:

7 months after you asked, but perhaps skip_time_zone_conversion_for_attributes= will help - it tells AcitveRecord not to convert timezones on storage or retrieval. See ActiveRecord Timestamp which shows the example:

class Topic < ActiveRecord::Base
  self.skip_time_zone_conversion_for_attributes = [:written_on]
end

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