from django.core.exceptions import ObjectDoesNotExist from django.db import models from markitup.fields import MarkupField from model_utils.managers import InheritanceManager from symposion.proposals.models import ProposalBase from symposion.conference.models import Section class Schedule(models.Model): section = models.OneToOneField(Section) slug = models.SlugField(unique=True) class Day(models.Model): schedule = models.ForeignKey(Schedule) date = models.DateField() class Meta: unique_together = [("schedule", "date")] class Room(models.Model): schedule = models.ForeignKey(Schedule) name = models.CharField(max_length=65) order = models.PositiveIntegerField() class SlotKind(models.Model): """ A slot kind represents what kind a slot is. For example, a slot can be a break, lunch, or X-minute talk. """ schedule = models.ForeignKey(Schedule) label = models.CharField(max_length=50) class Slot(models.Model): day = models.ForeignKey(Day) kind = models.ForeignKey(SlotKind) start = models.TimeField() end = models.TimeField() def assign(self, content): """ Assign the given content to this slot and if a previous slot content was given we need to unlink it to avoid integrity errors. """ self.unassign() content.slot = self content.save() def unassign(self): """ Unassign the associated content with this slot. """ if self.content and self.content.slot_id: self.content.slot = None self.content.save() @property def content(self): """ Return the content this slot represents. @@@ hard-coded for presentation for now """ try: return self.content_ptr except ObjectDoesNotExist: return None class SlotRoom(models.Model): """ Links a slot with a room. """ slot = models.ForeignKey(Slot) room = models.ForeignKey(Room) class Meta: unique_together = [("slot", "room")] class Presentation(models.Model): slot = models.OneToOneField(Slot, null=True, blank=True, related_name="content_ptr") title = models.CharField(max_length=100) description = MarkupField() abstract = MarkupField() speaker = models.ForeignKey("speakers.Speaker", related_name="presentations") additional_speakers = models.ManyToManyField("speakers.Speaker", blank=True) cancelled = models.BooleanField(default=False) proposal_base = models.OneToOneField(ProposalBase, related_name="presentation") section = models.ForeignKey(Section, related_name="presentations") @property def number(self): return self.proposal.number @property def proposal(self): if self.proposal_base_id is None: return None return ProposalBase.objects.get_subclass(pk=self.proposal_base_id) def speakers(self): yield self.speaker for speaker in self.additional_speakers.all(): yield speaker def __unicode__(self): return "#%s %s (%s)" % (self.number, self.title, self.speaker)