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Django app to enable exporting of events to iCalendar files. Imitates behavior of django.contrib.syndication and is based upon vobject
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README.md

django-cal

Django app to enable exporting of events to iCalendar files. Imitates behavior of django.contrib.syndication and is based upon vobject (http://vobject.skyhouseconsulting.com/).

Heavy inspiration came from Christian Joergensen (http://www.technobabble.dk/2008/mar/06/exposing-calendar-events-using-icalendar-django/) and Derek Willis (http://blog.thescoop.org/archives/2007/07/31/django-ical-and-vobject/).

This project is maintained and contributions will be happily accepted, but no feature developments are planned. It has been used successfully with Django 1.3 - 1.7. At the moment, only Python 2 is supported.

Installation

pip install django-cal

Documentation

Overview

Please see Django's syndication feed framework documentation, django_cal imitates its behavior: https://docs.djangoproject.com/en/1.6/ref/contrib/syndication/.

Defining event properties

The following parameters work analagous to how they're implemented in django.contrib.syndication. That means, the framework checks in the following order: self.$param(obj), self.$param(), self.$param; obj being the object returned by self.get_object.

items           Returns the list of events.
                Must be set.
filename        Filename of the file returned in the view.
                Optional, defaults to 'events.ics'.
cal_name        Name of the calendar.
                Optional, defaults to None.
cal_desc        Description of the calendar. 
                Optional, defaults to None.

item_summary    The "title" of the item.
                Optional, defaults to unicode representation of item.

item_end        Duration or end time of item.
item_duration   Optional, defaults to None. Must not define both.

item_rruleset   Optional, defaults to None.
                Should return dateutil.rruleset instance
                for recurrent events.

item_url        Optional, default calls item.get_absolute_url()
                Should return a URL with the fully-qualified domain and
                protocol (e.g. 'http://www.example.com/blog/') or an
                absolute path (e.g. '/events/'). If only a path is
                present, the 'django.contrib.sites' app will be used
                to insert the domain of the current site.
                Note: To find the current site, 'django.contrib.sites'
                      must be in your settings.INSTALLED_APPS (it is
                      there by default)

item_uid        All correspond to their vEvent equivalents.
item_start      All optional, all default to None.
item_description
item_categories
item_comment
item_location
item_last_modified
item_created

Duration of events

django-cal imitates vobject behavior regarding start and end of events. In short: Use Date objects for all-day events, DateTime for more granular control. Define either duration or end time, never both.

Timezones

If you need timezone support, use pytz.timezone to create an "aware" datetime object for item_start and item_end and set it to UTC. A user reported that Gmail, Outlook, Apple Mail, etc. are properly displaying it in the user's local timezone upon receipt.

Example::

from pytz import timezone

# dt is a naive datetime object known to represent US/Eastern time
loc_dt = timezone('US/Eastern').localize(dt)
utc = timezone('UTC')
aware_datetime = loc_dt.astimezone(utc)

Complex behavior

self.get_object can be overriden to allow for more complex events, as is possible for syndication feeds.

Dependencies

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