+from django.conf import settings
+from django.conf.urls.defaults import url, patterns, include
+from django.contrib.auth.models import User
+from django.contrib.contenttypes.generic import GenericForeignKey
+from django.contrib.contenttypes.models import ContentType
+from django.core.exceptions import ValidationError
+from django.core.validators import RegexValidator
from django.db import models
+from django.http import HttpResponse
+from django.utils.encoding import force_unicode
+from philo.contrib.julian.feedgenerator import ICalendarFeed
+from philo.contrib.penfield.models import FeedView, FEEDS
+from philo.models.base import Tag, Entity
+from philo.models.fields import TemplateField
+from philo.utils import ContentTypeRegistryLimiter
+import re
-# Create your models here.
+
+# TODO: Could this regex more closely match the Formal Public Identifier spec?
+# http://xml.coverpages.org/tauber-fpi.html
+FPI_REGEX = re.compile(r"(|\+//|-//)[^/]+//[^/]+//[A-Z]{2}")
+
+
+ICALENDAR = ICalendarFeed.mime_type
+FEEDS[ICALENDAR] = ICalendarFeed
+
+
+location_content_type_limiter = ContentTypeRegistryLimiter()
+
+
+def register_location_model(model):
+ location_content_type_limiter.register_class(model)
+
+
+def unregister_location_model(model):
+ location_content_type_limiter.unregister_class(model)
+
+
+class Location(Entity):
+ name = models.CharField(max_length=255)
+
+ def __unicode__(self):
+ return self.name
+
+
+register_location_model(Location)
+
+
+class TimedModel(models.Model):
+ start_date = models.DateField(help_text="YYYY-MM-DD")
+ start_time = models.TimeField(blank=True, null=True, help_text="HH:MM:SS - 24 hour clock")
+ end_date = models.DateField()
+ end_time = models.TimeField(blank=True, null=True)
+
+ def is_all_day(self):
+ return self.start_time is None and self.end_time is None
+
+ def clean(self):
+ if bool(self.start_time) != bool(self.end_time):
+ raise ValidationError("A %s must have either a start time and an end time or neither.")
+
+ if self.start_date > self.end_date or self.start_date == self.end_date and self.start_time > self.end_time:
+ raise ValidationError("A %s cannot end before it starts." % self.__class__.__name__)
+
+ def get_start(self):
+ return self.start_date
+
+ def get_end(self):
+ return self.end_date
+
+ class Meta:
+ abstract = True
+
+
+class Event(Entity, TimedModel):
+ name = models.CharField(max_length=255)
+ slug = models.SlugField(max_length=255)
+
+ location_content_type = models.ForeignKey(ContentType, limit_choices_to=location_content_type_limiter, blank=True, null=True)
+ location_pk = models.TextField(blank=True)
+ location = GenericForeignKey('location_content_type', 'location_pk')
+
+ description = TemplateField()
+
+ tags = models.ManyToManyField(Tag, blank=True, null=True)
+
+ parent_event = models.ForeignKey('self', blank=True, null=True)
+
+ owner = models.ForeignKey(getattr(settings, 'PHILO_PERSON_MODULE', 'auth.User'))
+
+ created = models.DateTimeField(auto_now_add=True)
+ last_modified = models.DateTimeField(auto_now=True)
+ uuid = models.TextField() # Format?
+
+
+class Calendar(Entity):
+ name = models.CharField(max_length=100)
+ slug = models.SlugField(max_length=100)
+ description = models.TextField(blank=True)
+ #slug = models.SlugField(max_length=255, unique=True)
+ events = models.ManyToManyField(Event, related_name='calendars')
+
+ # TODO: Can we auto-generate this on save based on site id and calendar name and settings language?
+ uuid = models.TextField("Calendar UUID", unique=True, help_text="Should conform to Formal Public Identifier format. See <http://en.wikipedia.org/wiki/Formal_Public_Identifier>", validators=[RegexValidator(FPI_REGEX)])
+
+
+class ICalendarFeedView(FeedView):
+ calendar = models.ForeignKey(Calendar)
+
+ item_context_var = "events"
+ object_attr = "calendar"
+
+ def get_reverse_params(self, obj):
+ return 'feed', [], {}
+
+ @property
+ def urlpatterns(self):
+ return patterns('',
+ url(r'^$', self.feed_view('get_all_events', 'feed'), name='feed')
+ )
+
+ def feed_view(self, get_items_attr, reverse_name):
+ """
+ Returns a view function that renders a list of items as a feed.
+ """
+ get_items = callable(get_items_attr) and get_items_attr or getattr(self, get_items_attr)
+
+ def inner(request, extra_context=None, *args, **kwargs):
+ obj = self.get_object(request, *args, **kwargs)
+ feed = self.get_feed(obj, request, reverse_name)
+ items, xxx = get_items(request, extra_context=extra_context, *args, **kwargs)
+ self.populate_feed(feed, items, request)
+
+ response = HttpResponse(mimetype=feed.mime_type)
+ feed.write(response, 'utf-8')
+
+ if FEEDS[self.feed_type] == ICalendarFeed:
+ # Add some extra information to the response for iCalendar readers.
+ # <http://blog.thescoop.org/archives/2007/07/31/django-ical-and-vobject/>
+ # Also, __get_dynamic_attr is protected by python - mangled. Should it
+ # just be private?
+ filename = self._FeedView__get_dynamic_attr('filename', obj)
+ response['Filename'] = filename
+ response['Content-Disposition'] = 'attachment; filename=%s' % filename
+ return response
+
+ return inner
+
+ def get_event_queryset(self):
+ return self.calendar.events.all()
+
+ def get_all_events(self, request, extra_context=None):
+ return self.get_event_queryset(), extra_context
+
+ def title(self, obj):
+ return obj.name
+
+ def link(self, obj):
+ # Link is ignored anyway...
+ return ""
+
+ def filename(self, obj):
+ return "%s.ics" % obj.slug
+
+ def feed_guid(self, obj):
+ # Is this correct? Should I have a different id for different subfeeds?
+ return obj.uuid
+
+ def description(self, obj):
+ return obj.description
+
+ # Would this be meaningful? I think it's just ignored anyway, for ical format.
+ #def categories(self, obj):
+ # event_ct = ContentType.objects.get_for_model(Event)
+ # event_pks = obj.events.values_list('pk')
+ # return [tag.name for tag in Tag.objects.filter(content_type=event_ct, object_id__in=event_pks)]
+
+ def item_title(self, item):
+ return item.name
+
+ def item_description(self, item):
+ return item.description
+
+ def item_link(self, item):
+ return self.reverse(item)
+
+ def item_guid(self, item):
+ return item.uuid
+
+ def item_author_name(self, item):
+ if item.owner:
+ return item.owner.get_full_name()
+
+ def item_author_email(self, item):
+ return getattr(item.owner, 'email', None) or None
+
+ def item_pubdate(self, item):
+ return item.created
+
+ def item_categories(self, item):
+ return [tag.name for tag in item.tags.all()]
+
+ def item_extra_kwargs(self, item):
+ return {
+ 'start': item.get_start(),
+ 'end': item.get_end(),
+ 'last_modified': item.last_modified,
+ # Is forcing unicode enough, or should we look for a "custom method"?
+ 'location': force_unicode(item.location),
+ }
+
+ class Meta:
+ verbose_name = "iCalendar view"
+
+field = ICalendarFeedView._meta.get_field('feed_type')
+field._choices += ((ICALENDAR, 'iCalendar'),)
+field.default = ICALENDAR
\ No newline at end of file
git.ithinksw.org / philo.git / blobdiff