symposion_app/symposion/conference/models.py
Tzu-ping Chung 1b51ef2ad8 Replace django-timezones w/ django-timezone-field
django-timezones does not support Python 3. django-timezone-field is
a revived fork that does.

For some unknown reason django-timezone-field's TimeZoneField does
not like positional arguments, so I changed to first argument to a
kwarg "verbose_name".
2015-08-04 13:47:35 +08:00

82 lines
2.3 KiB
Python

from django.db import models
from django.utils.translation import ugettext_lazy as _
from timezone_field import TimeZoneField
CONFERENCE_CACHE = {}
class Conference(models.Model):
"""
the full conference for a specific year, e.g. US PyCon 2012.
"""
title = models.CharField(_("title"), max_length=100)
# when the conference runs
start_date = models.DateField(_("start date"), null=True, blank=True)
end_date = models.DateField(_("end date"), null=True, blank=True)
# timezone the conference is in
timezone = TimeZoneField(blank=True, verbose_name=_("timezone"))
def __unicode__(self):
return self.title
def save(self, *args, **kwargs):
super(Conference, self).save(*args, **kwargs)
if self.id in CONFERENCE_CACHE:
del CONFERENCE_CACHE[self.id]
def delete(self):
pk = self.pk
super(Conference, self).delete()
try:
del CONFERENCE_CACHE[pk]
except KeyError:
pass
class Meta(object):
verbose_name = _("conference")
verbose_name_plural = _("conferences")
class Section(models.Model):
"""
a section of the conference such as "Tutorials", "Workshops",
"Talks", "Expo", "Sprints", that may have its own review and
scheduling process.
"""
conference = models.ForeignKey(Conference, verbose_name=_("conference"))
name = models.CharField(_("name"), max_length=100)
slug = models.SlugField()
# when the section runs
start_date = models.DateField(_("start date"), null=True, blank=True)
end_date = models.DateField(_("end date"), null=True, blank=True)
def __unicode__(self):
return u"%s %s" % (self.conference, self.name)
class Meta(object):
verbose_name = _("section")
verbose_name_plural = _("sections")
ordering = ["start_date"]
def current_conference():
from django.conf import settings
try:
conf_id = settings.CONFERENCE_ID
except AttributeError:
from django.core.exceptions import ImproperlyConfigured
raise ImproperlyConfigured("You must set the CONFERENCE_ID setting.")
try:
current_conf = CONFERENCE_CACHE[conf_id]
except KeyError:
current_conf = Conference.objects.get(pk=conf_id)
CONFERENCE_CACHE[conf_id] = current_conf
return current_conf