如何在rails上管理不同的time_zones

Question

用户的属性是start_time、end_time和time_zone。

我只是在节省时间，而不是日期和用户time_zone，例如

start_time => "09:00"
end_time => "02:00"
time_zone => "Samoa"

根据给定的start_time和end_time，用户只被称为b/w。我怎么检查这个的？

我的研究，我发现这个

in_time_zone('Eastern Time (US & Canada)')

我想根据它的start_time和基于time_zone的end_time来检查用户是否可用

Answer 1

server_tz = Time.zone # zone on server
server_now = server_tz.now # time on server right now

Time.use_zone(time_zone) do # ⇐ user’s time zone, 'Samoa'
  server_start, server_end = %i|start_time end_time|.map do |t|
    # ⇓ parse in user time zone and convert to server tz
    Time.zone.parse("#{Date.today} #{t}").in_time_zone(server_tz)
  end
  # ⇓ use case-triple-equal to check if time is in between
  (server_start..server_end) === server_now
end