People & Events

hCard & hCalendar

People & Events

• Very common "structures" on weblogs
• Create explicit structures
  • in order to easily publish, index, aggregate
• Minimize impact on authors (and developers)
• Avoid duplicating all content
  • Avoid requiring file uploads

vCard & iCalendar

• RFC 2426 & RFC2445
• Widely adopted and implemented
  • Not SGML/XML markup
• XML/RDF variants exist
  • Can't be easily embedded/styled in (X)HTML
  • Places many constraints on authors
    • E.g. which elements and how to nest
• Conclusion: Try 1:1 mapping into XHTML

hCard & hCalendar

• hCard = vCard RFC2426 mapped 1:1 into XHTML
• hCalendar = iCalendar RFC2445 mapped 1:1 into XHTML
• Reuse schema (names, properties etc.) as class values
• Use most precise XHTML building blocks
• If necessary use <abbr> for human vs. machine values

hCard examples

• hCard creator
• This presentation (view source)
• X2V converter
  • See examples in the wild at hCard spec

hCalendar examples

• This presentation
• Sunnyvale House Concerts site
• X2V converter
  • WWW2005 Dev-Day schedule + hCalendar
  • beta of Upcoming.org
  • Tantek's blog
  • subscribe to the events on a blog

hCard & hCalendar next steps

• Publish formal XMDP profiles for each
• iCalendar vs. iCal-BASIC. See "calsify" list.
• Work with implementations on interoperability
• Try mixing & matching with other microformats

Colophon

• XHTML
• CSS
• S5 v1.1b5xoxo
• XOXO
• hCard
• hCalendar
• rel="license"
• Some rights reserved. CC by-2.0
• http://tantek.com/presentations/2005/05/hcard-hcalendar/