forked from rc/aircox
64 lines
1.8 KiB
Python
64 lines
1.8 KiB
Python
from django.db.models.signals import post_save, pre_delete
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from django.dispatch import receiver
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from django.utils.translation import ugettext as _, ugettext_lazy
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from django.contrib.contenttypes.models import ContentType
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import aircox.models as models
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import aircox.utils as utils
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# FIXME: avoid copy of the code in schedule_post_saved and
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# schedule_pre_delete
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@receiver(post_save, sender=models.Schedule)
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def schedule_post_saved(sender, instance, created, *args, **kwargs):
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if not instance.program.sync:
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return
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initial = instance._Schedule__initial
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if not initial or not instance.changed(['date','duration', 'frequency']):
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return
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# old schedule and timedelta
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old_sched = models.Schedule(
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date = initial['date'],
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duration = initial['duration'],
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frequency = initial['frequency'],
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)
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delta = instance.date - old_sched.date
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# update diffusions...
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qs = models.Diffusion.objects.get_after().filter(
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program = instance.program
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)
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for diff in qs:
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if not old_sched.match(diff.date):
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continue
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diff.start += delta
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diff.end = diff.start + utils.to_timedelta(instance.duration)
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diff.save()
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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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if not instance.program.sync:
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return
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initial = instance._Schedule__initial
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if not initial or not instance.changed(['date','duration', 'frequency']):
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return
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old_sched = models.Schedule(
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date = initial['date'],
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duration = initial['duration'],
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frequency = initial['frequency'],
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)
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qs = models.Diffusion.objects.get_after().filter(
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program = instance.program
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)
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for diff in qs:
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if not old_sched.match(diff.date):
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continue
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diff.delete()
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