71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
from django.db import models
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from timezones.fields import TimeZoneField
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CONFERENCE_CACHE = {}
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class Conference(models.Model):
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"""
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the full conference for a specific year, e.g. US PyCon 2012.
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"""
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title = models.CharField(max_length=100)
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# when the conference runs
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start_date = models.DateField(null=True, blank=True)
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end_date = models.DateField(null=True, blank=True)
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# timezone the conference is in
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timezone = TimeZoneField(blank=True)
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def __unicode__(self):
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return self.title
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def save(self, *args, **kwargs):
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super(Conference, self).save(*args, **kwargs)
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if self.id in CONFERENCE_CACHE:
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del CONFERENCE_CACHE[self.id]
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def delete(self):
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pk = self.pk
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super(Conference, self).delete()
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try:
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del CONFERENCE_CACHE[pk]
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except KeyError:
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pass
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class Section(models.Model):
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"""
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a section of the conference such as "Tutorials", "Workshops",
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"Talks", "Expo", "Sprints", that may have its own review and
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scheduling process.
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"""
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conference = models.ForeignKey(Conference)
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name = models.CharField(max_length=100)
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# when the section runs
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start_date = models.DateField(null=True, blank=True)
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end_date = models.DateField(null=True, blank=True)
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def __unicode__(self):
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return self.name
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def current_conference():
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from django.conf import settings
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try:
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conf_id = settings.CONFERENCE_ID
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except AttributeError:
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from django.core.exceptions import ImproperlyConfigured
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raise ImproperlyConfigured("You must set the CONFERENCE_ID setting.")
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try:
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current_conf = CONFERENCE_CACHE[conf_id]
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except KeyError:
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current_conf = Conference.objects.get(pk=conf_id)
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CONFERENCE_CACHE[conf_id] = current_conf
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return current_conf
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