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ユーザのタイムゾーンを数式で求める方法

Last updated at Posted at 2020-12-16

質問の回答を検証している時にみつけました。なかなか面白い記事です。

How do I access the user's timezone in a formula field?

このソリューションは、Salesforceの2つのすぐに使用できる関数、つまりDATEVALUEとDATETIMEVALUEの間の紛らわしい不整合を利用しています。

前者はユーザーのタイムゾーンで評価され、後者はGMTとして評価されます。この不整合を利用して、次のようにユーザーのタイムゾーンを導き出すことができます。このコードを「UserTimezoneOffset」という名前の新しい数式フィールドに貼り付けます。

(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 00:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 01:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 02:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 03:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 04:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 05:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 06:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 07:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 08:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 09:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 10:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 11:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 12:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 13:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 14:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 15:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 16:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 17:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 18:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 19:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 20:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 21:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 22:00:00")) - TODAY()) + 
(DATEVALUE(DATETIMEVALUE(TEXT(TODAY())+" 23:00:00")) - TODAY())

能力の高い人がいるものです。世界は広いなぁ。

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