rfc2445，如何存储全天事件？

Question

我正在创建一个日历应用程序，应该向 rfc-2445 specification. I've had a few issue with the All Day events here but now it has been resolved, you can see the SO question 投诉，但它迫使我提出以下问题。

当我选择全天活动时，例如从 20-10-2015 到 21-10-2015（活动持续时间为 2 天）实际上我从20-10-2015到22-10-2015需要在数据库中创建记录，否则将显示为一日活动。

And my question has two part:

Is the above right and according to standard rfc-2445?

Should I store such event in DB as from 20-10-2015 to 22-10-2015 and when show its details to end user I should decrease one day from end date or store it as 20-10-2015 to 21-10-2015 and increase by one day at end date when render it inside the calendar.

谢谢。

Answer 1

DTEND属性对应事件的非包容性结束，所以，你上面的例子是正确的

请参阅 https://www.rfc-editor.org/rfc/rfc5545#section-3.6.1，其中指定：

The "DTSTART" property for a "VEVENT" specifies the inclusive start of the event. For recurring events, it also specifies the very first instance in the recurrence set. The "DTEND" property for a "VEVENT" calendar component specifies the non-inclusive end of the event.

还有一个多天全天活动的示例：

The following is an example of the "VEVENT" calendar component used to represent a multi-day event scheduled from June 28th, 2007 to July 8th, 2007 inclusively. Note that the "DTEND" property is set to July 9th, 2007, since the "DTEND" property specifies the non-inclusive end of the event.

   BEGIN:VEVENT
   UID:20070423T123432Z-541111@example.com
   DTSTAMP:20070423T123432Z
   DTSTART;VALUE=DATE:20070628
   DTEND;VALUE=DATE:20070709
   SUMMARY:Festival International de Jazz de Montreal
   TRANSP:TRANSPARENT
   END:VEVENT

您会注意到我指的是 RFC5545，它已经废弃了 RFC2445。

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