How we deal with TIMEZONES!

Notes

1. User.timezone comes from momentjs moment().format("Z")
2. Everytime user logs in, we pass the browser's timezone
3. Session controller updates user timezone

timezone_helper.rb

module TimezoneHelper
  def to_timezone(datetime, user)
    datetime.in_time_zone(get_timezone_name(user).name)
  end

  def get_timezone_name(user)
    if user.timezone.blank? or user.timezone == "00:00"
      ActiveSupport::TimeZone.all.select{|me| me.now.formatted_offset == "-04:00"}.first
    else
      ActiveSupport::TimeZone.all.select{|me| me.now.formatted_offset == user.timezone}.first
    end
  end
end