20 lines
745 B
Ruby
20 lines
745 B
Ruby
module TimezoneHelper
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# ActiveSupport TimeZone is not aware of the current time, so ActiveSupport::Timezone[offset]
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# would return the timezone without considering day light savings. To get the correct timezone,
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# this method uses zone.now.utc_offset for comparison as referenced in the issues below
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#
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# https://github.com/rails/rails/pull/22243
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# https://github.com/rails/rails/issues/21501
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# https://github.com/rails/rails/issues/7297
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def timezone_name_from_offset(offset)
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return 'UTC' if offset.blank?
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offset_in_seconds = offset.to_f * 3600
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matching_zone = ActiveSupport::TimeZone.all.find do |zone|
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zone.now.utc_offset == offset_in_seconds
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end
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return matching_zone.name if matching_zone
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end
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end
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