Getting Dates with
Plone
Aaron VanDerlip, Jazkarta.com
2008 Plone Conference
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

But what this is really
about
Plone4ArtistsCalendar
mostly
But there is a lot under the hood (or bonnet)
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

Background
First there was Plone4Artists Calendar
it was a bit of monolith
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

Lennart Regebro ==
Hero

Overview
• dateable.chronos
• dateable.kalends
• p4a.subtyper
• p4a.plonecalendar
• p4a.event
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

dateable.chronos Icalendar support
The user interface Not implemented yet
dateable.kalends
Defines interfaces
and functionality
p4a.plonecalendar p4a.ploneevent
Extends Plone with Extends the standard
the Kalends functionality Event with recurrence
Plone Events
and Folders

Mix-ins hard to work with

Separate concerns, common
interface

dateable.chronos
• Provides calendar views
• Calls event providers to
• Reusable outside Plone4Artists
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

p4a.plonecalendar
• Registers Folder and Topic types to
implement IPossibleCalenedar
• Provides hooks forimport/export of iCal
feeds
• Implements the necessary kalends interface
for events providers
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

Rocky Burt == Hero

p4a.subtyper
• Its slick
• Provides hooks to register type into the UI
and the back end
• In a nutshell, a way to provide marker
interfaces
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

p4a.event
• Implements
dateable.kalends.IRecurringEvent
• Wraps the object using factory
• uses schemaextender to add Recurrence
support to the Event type
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

Recurrence is cool

Let’s demo the tools
• Markup some types
• Import some external data
• Build a small app
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

Getting the date

To do
• improve iCal import/export
• microformats (coming real soon)
• test to be sure the above work
• UI
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

Further reading
• http://www.serverzen.com/
training/subtyping-unleashed
• http://regebro.wordpress.com/
2008/03/08/whats-up-with-
dateable/
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348

Thanks!
aaron (at) jazkarta.com
www.jazkarta.com
2008 Plone Conference www.jazkarta.com 1 (888) 756-6348