Difference: Calendar (10 vs. 11)

Revision 112013-02-07 - WilliamSeligman

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META TOPICPARENT name="Computing"

Nevis Calendars

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  CalDAV is the same calendar system used at Google Calendars and Apple's iCloud. There's a CalDAV server at Nevis, which can be used if you want to synchronize your calendars on multiple devices. All the programs listed below (Sunbird, iCal, Outlook) can synchronize with a CalDAV server, in addition to most tablets and smart phones.
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The key bit of information is the name of the Nevis CalDAV server:
https://www.nevis.columbia.edu/caldav/caldav.php/nevis/
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Here's how to create/subscribe to calendars on the Nevis CalDAV server using iCal or BusyCal:
 
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If you're using Apple's iCal or Mozilla's Sunbird, you'll have to subscribe to each calendar individually by adding its name to the end of the above URL; e.g.,
https://www.nevis.columbia.edu/caldav/caldav.php/nevis/university-holidays
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  • In iCal, you do this by selecting "Preferences", selecting the Account pane, then hitting the "+" sign in the lower left-hand corner of the pane. In BusyCal, use the Calendar menu and select "Connect to iCloud/CalDAV server".
 
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Use your regular Nevis account name and password; i.e., the one you use to login or read your mail.
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  • The account type is "!CalDAV".
 
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If you do this, you'll be able to see all the Nevis calendars with your program, but you won't be able create a new calendar of your own. Contact me and I'll create it for you. (The issue is that if you could create your own calendar by yourself, you'd also be able to edit everyone else's calendar as well.)
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  • For account and password, use your standard Nevis account/mail password.

  • For server name, use:
    https://calendar.nevis.columbia.edu/caldav/caldav.php/ACCOUNT/
    Don't type "ACCOUNT". Type your standard Nevis account name. For example, user jsmith would type:
    https://calendar.nevis.columbia.edu/caldav/caldav.php/jsmith/

  • Hit the "Accept" button.

  • If you get a dialog box about a certificate, just accept it.

  • If you want to see any of the other Nevis calendars in iCal, select the "Delegation" sub-pane. At minimum, you'll probably want "Nevis Group". (In BusyCal, you don't have to do this.)

  • You will not see any new calendars on the viewcal page. I have to manually edit a script on the web server to make that happen. I'll do that as soon as I see that you've created a calendar of your own, or you can just send me an e-mail.

If you're using Mozilla's Sunbird, you'll have to subscribe to each calendar individually:

https://calendar.nevis.columbia.edu/caldav/caldav.php/ACCOUNT/calendar
https://calendar.nevis.columbia.edu/caldav/caldav.php/nevis/university-holidays
https://calendar.nevis.columbia.edu/caldav/caldav.php/nevis/other
 

Shared public calendars via WebDAV

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To use these programs to share calendars at Nevis, you'll want to either publish your own calendar or subscribe to an existing one. For example, you can subscribe to https://www.nevis.columbia.edu/calendar/university-holidays.ics, which contains Columbia University holidays (complete through early 2013).
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To use these programs to share calendars at Nevis, you'll want to either publish your own calendar or subscribe to an existing one. For example, you can subscribe to https://calendar.nevis.columbia.edu/calendar/university-holidays.ics, which contains Columbia University holidays (complete through early 2013).
  You may have to add the Nevis certificate to your system; follow the directions on this page.
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  • If you contact me, I can arrange for a calendar file to be restricted so only a single user (or a small number of users) can edit the calendar. However, for this kind of security, CalDAV is better (see above).
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  • There's a hint of "security through obscurity" here: If you don't know the name of a calendar file, you won't be able to subscribe to it. However, you can see a list of available calendars through the calendar viewing page described in the next section. Just take the name you see on that page, add https://www.nevis.columbia.edu/calendar/ before it, add .ics after it, and you have the name to which you can subscribe.

    If this trick doesn't work, it means the calendar is hosted by CalDAV; see above.

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  • There's a hint of "security through obscurity" here: If you don't know the name of a calendar file, you won't be able to subscribe to it. However, you can see a list of available calendars through the calendar viewing page described in the next section. Just take the name you see on that page, add https://calendar.nevis.columbia.edu/calendar/ before it, add .ics after it, and you have the name to which you can subscribe.

    If this trick doesn't work, it means the calendar is hosted by CalDAV; see above.

 

Viewing public calendars

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If you don't have access to a computer that has a program that can edit a shared calendar, at least you can view them in a web browser. The link is http://www.nevis.columbia.edu/viewcal/.
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If you don't have access to a computer that has a program that can edit a shared calendar, at least you can view them in a web browser. The link is http://calendar.nevis.columbia.edu/viewcal/.
  Here are the distinguishing features of viewing calendars this way:
 
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