from django.contrib.postgres.fields import DateTimeRangeField from django.db import models from django.utils.text import slugify from django.conf import settings from utils.models import CreatedUpdatedModel from django.core.exceptions import ValidationError from datetime import timedelta class EventLocation(CreatedUpdatedModel): """ The places where stuff happens """ name = models.CharField(max_length=100) slug = models.SlugField() icon = models.CharField(max_length=100) camp = models.ForeignKey('camps.Camp', null=True, related_name="eventlocations") def __str__(self): return self.name class Meta: unique_together = (('camp', 'slug'), ('camp', 'name')) class EventType(CreatedUpdatedModel): """ Every event needs to have a type. """ name = models.CharField(max_length=100, unique=True) slug = models.SlugField() color = models.CharField(max_length=50) light_text = models.BooleanField(default=False) notifications = models.BooleanField(default=False) def __str__(self): return self.name class Event(CreatedUpdatedModel): """ Something that is on the program one or more times. """ title = models.CharField(max_length=255) slug = models.SlugField(blank=True, max_length=255) abstract = models.TextField() event_type = models.ForeignKey(EventType) camp = models.ForeignKey('camps.Camp', null=True, related_name="events") class Meta: ordering = ['title'] unique_together = (('camp', 'slug'), ('camp', 'title')) def __str__(self): return '%s (%s)' % (self.title, self.camp.title) def save(self, **kwargs): if not self.slug: self.slug = slugify(self.title) super(Event, self).save(**kwargs) @property def speakers_list(self): if self.speakers.exists(): return ", ".join(self.speakers.all().values_list('name', flat=True)) return False class EventInstance(CreatedUpdatedModel): """ An instance of an event """ event = models.ForeignKey('program.event', related_name='instances') when = DateTimeRangeField() notifications_sent = models.BooleanField(default=False) location = models.ForeignKey('program.EventLocation', related_name='eventinstances') class Meta: ordering = ['when'] def __str__(self): return '%s (%s)' % (self.event, self.when) def __clean__(self): errors = [] if self.location.camp != self.event.camp: errors.append(ValidationError({'location', "Error: This location belongs to a different camp"})) if errors: raise ValidationError(errors) @property def schedule_date(self): """ Returns the schedule date of this eventinstance. Schedule date is determined by substracting settings.SCHEDULE_MIDNIGHT_OFFSET_HOURS from the eventinstance start time. This means that if an event is scheduled for 00:30 wednesday evening (technically thursday) then the date after substracting 5 hours would be wednesdays date, not thursdays (given settings.SCHEDULE_MIDNIGHT_OFFSET_HOURS=5) """ return (self.when.lower-timedelta(hours=settings.SCHEDULE_MIDNIGHT_OFFSET_HOURS)).date() @property def timeslots(self): """ Find the number of timeslots this eventinstance takes up """ seconds = (self.when.upper-self.when.lower).seconds minutes = seconds / 60 return minutes / settings.SCHEDULE_TIMESLOT_LENGTH_MINUTES def get_speaker_picture_upload_path(instance, filename): """ We want speaker pictures are saved as MEDIA_ROOT/speakers/camp-slug/speaker-slug/filename """ return 'speakers/%(campslug)s/%(speakerslug)s/%(filename)s' % { 'campslug': instance.camp.slug, 'speakerslug': instance.slug, 'filename': filename } class Speaker(CreatedUpdatedModel): """ A Person anchoring an event. """ name = models.CharField(max_length=150) biography = models.TextField() picture_small = models.ImageField(null=True, blank=True, upload_to=get_speaker_picture_upload_path) picture_large = models.ImageField(null=True, blank=True, upload_to=get_speaker_picture_upload_path) slug = models.SlugField(blank=True, max_length=255) camp = models.ForeignKey('camps.Camp', null=True, related_name="speakers") events = models.ManyToManyField( Event, blank=True, ) class Meta: ordering = ['name'] unique_together = (('camp', 'name'), ('camp', 'slug')) def __str__(self): return '%s (%s)' % (self.name, self.camp) def save(self, **kwargs): if not self.slug: self.slug = slugify(self.name) super(Speaker, self).save(**kwargs)