76 lines
2.5 KiB
Python
76 lines
2.5 KiB
Python
# chrono - agendas system
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# Copyright (C) 2016 Entr'ouvert
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from django.core.urlresolvers import reverse
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from django.db import models
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from django.db.models.expressions import RawSQL
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from django.utils.text import slugify
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from django.utils.translation import ugettext_lazy as _
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from jsonfield import JSONField
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class Agenda(models.Model):
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label = models.CharField(_('Label'), max_length=50)
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slug = models.SlugField(_('Slug'))
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class Meta:
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ordering = ['label']
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def save(self, *args, **kwargs):
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if not self.slug:
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base_slug = slugify(self.label)
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slug = base_slug
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i = 1
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while True:
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try:
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Agenda.objects.get(slug=slug)
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except self.DoesNotExist:
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break
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slug = '%s-%s' % (base_slug, i)
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i += 1
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self.slug = slug
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super(Agenda, self).save(*args, **kwargs)
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def get_absolute_url(self):
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return reverse('chrono-manager-agenda-view', kwargs={'pk': self.id})
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class EventManager(models.Manager):
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def get_queryset(self):
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return super(EventManager, self).get_queryset().annotate(
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booked_places=RawSQL('''SELECT count(*)
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FROM agendas_booking
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WHERE agendas_booking.event_id = agendas_event.id
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AND cancellation_datetime IS NULL''', ()))
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class Event(models.Model):
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agenda = models.ForeignKey(Agenda)
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start_datetime = models.DateTimeField(_('Date/time'))
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places = models.PositiveIntegerField(_('Places'))
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objects = EventManager()
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class Meta:
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ordering = ['agenda', 'start_datetime']
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class Booking(models.Model):
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event = models.ForeignKey(Event)
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extra_data = JSONField(null=True)
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cancellation_datetime = models.DateTimeField(null=True)
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