forked from rc/aircox
93 lines
3.0 KiB
Python
Executable File
93 lines
3.0 KiB
Python
Executable File
import pytz
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from django.contrib.auth.models import User, Group, Permission
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from django.contrib.contenttypes.models import ContentType
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from django.db.models import F
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from django.db.models.signals import post_save, pre_save, pre_delete, m2m_changed
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from django.dispatch import receiver, Signal
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from django.utils import timezone as tz
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from django.utils.translation import ugettext as _, ugettext_lazy
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import aircox.models as models
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import aircox.utils as utils
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import aircox.settings as settings
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# Add a default group to a user when it is created. It also assigns a list
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# of permissions to the group if it is created.
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#
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# - group name: settings.AIRCOX_DEFAULT_USER_GROUP
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# - group permissions: settings.AIRCOX_DEFAULT_USER_GROUP_PERMS
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#
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@receiver(post_save, sender=User)
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def user_default_groups(sender, instance, created, *args, **kwargs):
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"""
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Set users to different default groups
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"""
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if not created or instance.is_superuser:
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return
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for groupName, permissions in settings.AIRCOX_DEFAULT_USER_GROUPS.items():
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if instance.groups.filter(name = groupName).count():
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continue
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group, created = Group.objects.get_or_create(name = groupName)
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if created and permissions:
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for codename in permissions:
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permission = Permission.objects.filter(codename = codename).first()
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if permission:
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group.permissions.add(permission)
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group.save()
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instance.groups.add(group)
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@receiver(post_save, sender=models.Program)
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def program_post_save(sender, instance, created, *args, **kwargs):
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"""
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Clean-up later diffusions when a program becomes inactive
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"""
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if not program.active:
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program.diffusion_set.after().delete()
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@receiver(post_save, sender=models.Schedule)
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def schedule_post_save(sender, instance, created, *args, **kwargs):
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"""
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Handles Schedule's time, duration and timezone changes and update
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corresponding diffusions accordingly.
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"""
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if created or not instance.program.sync or \
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not instance.changed(['time','duration','timezone']):
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return
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initial = instance._Schedule__initial
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initial = models.Schedule(**{ k: v
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for k, v in instance._Schedule__initial.items()
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if not k.startswith('_')
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})
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today = tz.datetime.today()
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delta = instance.normalize(today) - \
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initial.normalize(today)
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qs = models.Diffusion.objects.program(instance.program).after()
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pks = [ d.pk for d in qs if initial.match(d.date) ]
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qs.filter(pk__in = pks).update(
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start = F('start') + delta,
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end = F('start') + delta + utils.to_timedelta(instance.duration)
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)
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@receiver(pre_delete, sender=models.Schedule)
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def schedule_pre_delete(sender, instance, *args, **kwargs):
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"""
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Delete later corresponding diffusion to a changed schedule.
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"""
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if not instance.program.sync:
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return
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qs = models.Diffusion.objects.program(instance.program).after()
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pks = [ d.pk for d in qs if instance.match(d.date) ]
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qs.filter(pk__in = pks).delete()
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