+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.contrib.sites.models import Site
+from django.core.exceptions import ValidationError, ObjectDoesNotExist
+from django.core.validators import RegexValidator
from django.db import models
-from philo.models.base import Tag, Entity, Titled
-import datetime
+from django.db.models.query import QuerySet
+from django.http import HttpResponse, Http404
+from django.utils.encoding import force_unicode
+from philo.contrib.julian.feedgenerator import ICalendarFeed
+from philo.contrib.penfield.models import FeedView, FEEDS
+from philo.exceptions import ViewCanNotProvideSubpath
+from philo.models import Tag, Entity, Page, TemplateField
+from philo.utils import ContentTypeRegistryLimiter
+import datetime, calendar
-class Location(Entity, Titled):
- slug = models.SlugField(max_length=255, unique=True)
+
+__all__ = ('register_location_model', 'unregister_location_model', 'Location', 'TimedModel', 'Event', 'Calendar', 'CalendarView',)
+
+
+ICALENDAR = ICalendarFeed.mime_type
+FEEDS[ICALENDAR] = ICalendarFeed
+try:
+ DEFAULT_SITE = Site.objects.get_current()
+except:
+ DEFAULT_SITE = None
+_languages = dict(settings.LANGUAGES)
+try:
+ _languages[settings.LANGUAGE_CODE]
+ DEFAULT_LANGUAGE = settings.LANGUAGE_CODE
+except KeyError:
+ try:
+ lang = settings.LANGUAGE_CODE.split('-')[0]
+ _languages[lang]
+ DEFAULT_LANGUAGE = lang
+ except KeyError:
+ DEFAULT_LANGUAGE = None
+
+
+location_content_type_limiter = ContentTypeRegistryLimiter()
-class Calendar(Entity, Titled):
+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)
slug = models.SlugField(max_length=255, unique=True)
+
+ 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 datetime.datetime.combine(self.start_date, self.start_time) if self.start_time else self.start_date
+
+ def get_end(self):
+ return datetime.datetime.combine(self.end_date, self.end_time) if self.end_time else self.end_date
+
+ class Meta:
+ abstract = True
+
+
+class EventManager(models.Manager):
+ def get_query_set(self):
+ return EventQuerySet(self.model)
+
+class EventQuerySet(QuerySet):
+ def upcoming(self):
+ return self.filter(start_date__gte=datetime.date.today())
+ def current(self):
+ return self.filter(start_date__lte=datetime.date.today(), end_date__gte=datetime.date.today())
+ def single_day(self):
+ return self.filter(start_date__exact=models.F('end_date'))
+ def multiday(self):
+ return self.exclude(start_date__exact=models.F('end_date'))
+
+class Event(Entity, TimedModel):
+ name = models.CharField(max_length=255)
+ slug = models.SlugField(max_length=255, unique_for_date='start_date')
+
+ 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, related_name='events', blank=True, null=True)
+
+ parent_event = models.ForeignKey('self', blank=True, null=True)
+
+ # TODO: "User module"
+ owner = models.ForeignKey(User, related_name='owned_events')
+
+ created = models.DateTimeField(auto_now_add=True)
+ last_modified = models.DateTimeField(auto_now=True)
+
+ site = models.ForeignKey(Site, default=DEFAULT_SITE)
+
+ @property
+ def uuid(self):
+ return "%s@%s" % (self.created.isoformat(), getattr(self.site, 'domain', 'None'))
+
+ objects = EventManager()
+
+ def __unicode__(self):
+ return self.name
+
+ class Meta:
+ unique_together = ('site', 'created')
+
+
+class Calendar(Entity):
+ name = models.CharField(max_length=100)
+ slug = models.SlugField(max_length=100)
+ description = models.TextField(blank=True)
+ events = models.ManyToManyField(Event, related_name='calendars', blank=True)
+
+ site = models.ForeignKey(Site, default=DEFAULT_SITE)
+ language = models.CharField(max_length=5, choices=settings.LANGUAGES, default=DEFAULT_LANGUAGE)
+
+ def __unicode__(self):
+ return self.name
+
+ @property
+ def fpi(self):
+ # See http://xml.coverpages.org/tauber-fpi.html or ISO 9070:1991 for format information.
+ return "-//%s//%s//%s" % (self.site.name, self.name, self.language.split('-')[0].upper())
+
+ class Meta:
+ unique_together = ('name', 'site', 'language')
+
+class CalendarView(FeedView):
+ calendar = models.ForeignKey(Calendar)
+ index_page = models.ForeignKey(Page, related_name="calendar_index_related")
+ event_detail_page = models.ForeignKey(Page, related_name="calendar_detail_related")
+
+ timespan_page = models.ForeignKey(Page, related_name="calendar_timespan_related", blank=True, null=True)
+ tag_page = models.ForeignKey(Page, related_name="calendar_tag_related", blank=True, null=True)
+ location_page = models.ForeignKey(Page, related_name="calendar_location_related", blank=True, null=True)
+ owner_page = models.ForeignKey(Page, related_name="calendar_owner_related", blank=True, null=True)
+
+ tag_archive_page = models.ForeignKey(Page, related_name="calendar_tag_archive_related", blank=True, null=True)
+ location_archive_page = models.ForeignKey(Page, related_name="calendar_location_archive_related", blank=True, null=True)
+ owner_archive_page = models.ForeignKey(Page, related_name="calendar_owner_archive_related", blank=True, null=True)
+
+ tag_permalink_base = models.CharField(max_length=30, default='tags')
+ owner_permalink_base = models.CharField(max_length=30, default='owners')
+ location_permalink_base = models.CharField(max_length=30, default='locations')
+ events_per_page = models.PositiveIntegerField(blank=True, null=True)
+
+ item_context_var = "events"
+ object_attr = "calendar"
+
+ def get_reverse_params(self, obj):
+ if isinstance(obj, User):
+ return 'events_for_user', [], {'username': obj.username}
+ elif isinstance(obj, Event):
+ return 'event_detail', [], {
+ 'year': str(obj.start_date.year).zfill(4),
+ 'month': str(obj.start_date.month).zfill(2),
+ 'day': str(obj.start_date.day).zfill(2),
+ 'slug': obj.slug
+ }
+ elif isinstance(obj, Tag) or isinstance(obj, models.query.QuerySet) and obj.model == Tag:
+ if isinstance(obj, Tag):
+ obj = [obj]
+ return 'entries_by_tag', [], {'tag_slugs': '/'.join(obj)}
+ raise ViewCanNotProvideSubpath
+
+ def timespan_patterns(self, pattern, timespan_name):
+ return self.feed_patterns(pattern, 'get_events_by_timespan', 'timespan_page', "events_by_%s" % timespan_name)
+
+ @property
+ def urlpatterns(self):
+ # Perhaps timespans should be done with GET parameters? Or two /-separated
+ # date slugs? (e.g. 2010-02-1/2010-02-2) or a start and duration?
+ # (e.g. 2010-02-01/week/ or ?d=2010-02-01&l=week)
+ urlpatterns = self.feed_patterns(r'^', 'get_all_events', 'index_page', 'index') + \
+ self.timespan_patterns(r'^(?P<year>\d{4})', 'year') + \
+ self.timespan_patterns(r'^(?P<year>\d{4})/(?P<month>\d{2})', 'month') + \
+ self.timespan_patterns(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})', 'day') + \
+ self.feed_patterns(r'^%s/(?P<username>[^/]+)' % self.owner_permalink_base, 'get_events_by_owner', 'owner_page', 'events_by_user') + \
+ self.feed_patterns(r'^%s/(?P<app_label>\w+)/(?P<model>\w+)/(?P<pk>[^/]+)' % self.location_permalink_base, 'get_events_by_location', 'location_page', 'events_by_location') + \
+ self.feed_patterns(r'^%s/(?P<tag_slugs>[-\w]+[-+/\w]*)' % self.tag_permalink_base, 'get_events_by_tag', 'tag_page', 'events_by_tag') + \
+ patterns('',
+ url(r'(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[\w-]+)$', self.event_detail_view, name="event_detail"),
+ )
+
+ # Some sort of shortcut for a location would be useful. This could be on a per-calendar
+ # or per-calendar-view basis.
+ #url(r'^%s/(?P<slug>[\w-]+)' % self.location_permalink_base, ...)
+
+ if self.tag_archive_page:
+ urlpatterns += patterns('',
+ url(r'^%s$' % self.tag_permalink_base, self.tag_archive_view, name='tag_archive')
+ )
+
+ if self.owner_archive_page:
+ urlpatterns += patterns('',
+ url(r'^%s$' % self.owner_permalink_base, self.owner_archive_view, name='owner_archive')
+ )
+
+ if self.location_archive_page:
+ urlpatterns += patterns('',
+ url(r'^%s$' % self.location_permalink_base, self.location_archive_view, name='location_archive')
+ )
+ return urlpatterns
+
+ # Basic QuerySet fetchers.
+ def get_event_queryset(self):
+ return self.calendar.events.all()
+
+ def get_timespan_queryset(self, year, month=None, day=None):
+ qs = self.get_event_queryset()
+ # See python documentation for the min/max values.
+ if year and month and day:
+ year, month, day = int(year), int(month), int(day)
+ start_datetime = datetime.datetime(year, month, day, 0, 0)
+ end_datetime = datetime.datetime(year, month, day, 23, 59)
+ elif year and month:
+ year, month = int(year), int(month)
+ start_datetime = datetime.datetime(year, month, 1, 0, 0)
+ end_datetime = datetime.datetime(year, month, calendar.monthrange(year, month)[1], 23, 59)
+ else:
+ year = int(year)
+ start_datetime = datetime.datetime(year, 1, 1, 0, 0)
+ end_datetime = datetime.datetime(year, 12, 31, 23, 59)
+
+ return qs.exclude(end_date__lt=start_datetime, end_time__lt=start_datetime).exclude(start_date__gt=end_datetime, start_time__gt=end_datetime, start_time__isnull=False).exclude(start_time__isnull=True, start_date__gt=end_datetime)
+
+ def get_tag_queryset(self):
+ return Tag.objects.filter(events__calendars=self.calendar).distinct()
+
+ def get_location_querysets(self):
+ # Potential bottleneck?
+ location_map = {}
+ locations = Event.objects.values_list('location_content_type', 'location_pk')
+
+ for ct, pk in locations:
+ location_map.setdefault(ct, []).append(pk)
+
+ location_cts = ContentType.objects.in_bulk(location_map.keys())
+ location_querysets = {}
+
+ for ct_pk, pks in location_map.items():
+ ct = location_cts[ct_pk]
+ location_querysets[ct] = ct.model_class()._default_manager.filter(pk__in=pks)
+
+ return location_querysets
+
+ def get_owner_queryset(self):
+ return User.objects.filter(owned_events__calendars=self.calendar).distinct()
+
+ # Event QuerySet parsers for a request/args/kwargs
+ def get_all_events(self, request, extra_context=None):
+ return self.get_event_queryset(), extra_context
+
+ def get_events_by_timespan(self, request, year, month=None, day=None, extra_context=None):
+ context = extra_context or {}
+ context.update({
+ 'year': year,
+ 'month': month,
+ 'day': day
+ })
+ return self.get_timespan_queryset(year, month, day), context
+
+ def get_events_by_owner(self, request, username, extra_context=None):
+ try:
+ owner = self.get_owner_queryset().get(username=username)
+ except User.DoesNotExist:
+ raise Http404
+
+ qs = self.get_event_queryset().filter(owner=owner)
+ context = extra_context or {}
+ context.update({
+ 'owner': owner
+ })
+ return qs, context
+
+ def get_events_by_tag(self, request, tag_slugs, extra_context=None):
+ tag_slugs = tag_slugs.replace('+', '/').split('/')
+ tags = self.get_tag_queryset().filter(slug__in=tag_slugs)
+
+ if not tags:
+ raise Http404
+
+ # Raise a 404 on an incorrect slug.
+ found_slugs = [tag.slug for tag in tags]
+ for slug in tag_slugs:
+ if slug and slug not in found_slugs:
+ raise Http404
-class Event(Entity, Titled):
- description = models.TextField()
- start_time = models.DateTimeField()
- end_time = models.DateTimeField()
- is_all_day_event = models.BooleanField(default=False)
- time_created = models.DateTimeField(default=datetime.datetime.now)
- location = models.ForeignKey(Location)
- calendars = models.ManyToManyField(Calendar)
- tags = models.ManyToManyField(Tag)
+ events = self.get_event_queryset()
+ for tag in tags:
+ events = events.filter(tags=tag)
+
+ context = extra_context or {}
+ context.update({'tags': tags})
+
+ return events, context
+
+ def get_events_by_location(self, request, app_label, model, pk, extra_context=None):
+ try:
+ ct = ContentType.objects.get(app_label=app_label, model=model)
+ location = ct.model_class()._default_manager.get(pk=pk)
+ except ObjectDoesNotExist:
+ raise Http404
+
+ events = self.get_event_queryset().filter(location_content_type=ct, location_pk=location.pk)
+
+ context = extra_context or {}
+ context.update({
+ 'location': location
+ })
+ return events, context
+
+ # Detail View.
+ def event_detail_view(self, request, year, month, day, slug, extra_context=None):
+ try:
+ event = Event.objects.select_related('parent_event').get(start_date__year=year, start_date__month=month, start_date__day=day, slug=slug)
+ except Event.DoesNotExist:
+ raise Http404
+
+ context = self.get_context()
+ context.update(extra_context or {})
+ context.update({
+ 'event': event
+ })
+ return self.event_detail_page.render_to_response(request, extra_context=context)
+
+ # Archive Views.
+ def tag_archive_view(self, request, extra_context=None):
+ tags = self.get_tag_queryset()
+ context = self.get_context()
+ context.update(extra_context or {})
+ context.update({
+ 'tags': tags
+ })
+ return self.tag_archive_page.render_to_response(request, extra_context=context)
+
+ def location_archive_view(self, request, extra_context=None):
+ # What datastructure should locations be?
+ locations = self.get_location_querysets()
+ context = self.get_context()
+ context.update(extra_context or {})
+ context.update({
+ 'locations': locations
+ })
+ return self.location_archive_page.render_to_response(request, extra_context=context)
+
+ def owner_archive_view(self, request, extra_context=None):
+ owners = self.get_owner_queryset()
+ context = self.get_context()
+ context.update(extra_context or {})
+ context.update({
+ 'owners': owners
+ })
+ return self.owner_archive_page.render_to_response(request, extra_context=context)
+
+ # Process page items
+ def process_page_items(self, request, items):
+ if self.events_per_page:
+ page_num = request.GET.get('page', 1)
+ paginator, paginated_page, items = paginate(items, self.events_per_page, page_num)
+ item_context = {
+ 'paginator': paginator,
+ 'paginated_page': paginated_page,
+ self.item_context_var: items
+ }
+ else:
+ item_context = {
+ self.item_context_var: items
+ }
+ return items, item_context
+
+ # Feed information hooks
+ def title(self, obj):
+ return obj.name
+
+ def link(self, obj):
+ # Link is ignored anyway...
+ return ""
+
+ def feed_guid(self, obj):
+ return obj.fpi
+
+ def description(self, obj):
+ return obj.description
+
+ def feed_extra_kwargs(self, obj):
+ return {'filename': "%s.ics" % obj.slug}
+
+ 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),
+ }
+
+ def __unicode__(self):
+ return u"%s for %s" % (self.__class__.__name__, self.calendar)
+field = CalendarView._meta.get_field('feed_type')
+field._choices += ((ICALENDAR, 'iCalendar'),)
+field.default = ICALENDAR
\ No newline at end of file
git.ithinksw.org / philo.git / blobdiff