Ruby中的时区选择列表(按UTC偏移量) [英] Timezone Select List in Ruby by UTC Offset

问题描述

我想按与UTC的偏移量列出一个选择，例如:

I would like to have a select listed by offset difference to UTC, like:

<select value=1>(GMT 00:00) GMT</select>
<select value=1>(GMT 00:00) Lisbon</select>
<select value=1>(GMT +00:01) Madrid</select>

就像在Rails中一样: https://signup.37signals.com/highrise/Free/signup/new

Just like in Rails: https://signup.37signals.com/highrise/Free/signup/new

我们正在使用Sinatra + Padrino.

We're using Sinatra+Padrino.

推荐答案

这是怎么回事:

ActiveSupport::TimeZone.all.inject([]) do |result, tz|
  utc_offset = tz.utc_offset / 3600
  result << ["(UTC #{'%.2d' % utc_offset}): #{tz.name}", utc_offset]
end

它将为options_for_select生成一个数组:

It will produce an array for options_for_select:

[["(UTC -11): International Date Line West", -11], ["(UTC -11): Midway Island", -11]...]

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