48 lines
1.7 KiB
Python
48 lines
1.7 KiB
Python
from django.conf import settings
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from django.db.models.signals import post_save, pre_delete, post_delete
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from django.dispatch import receiver
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from .models import Source, Media
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from .tasks import delete_index_source_task, index_source_task, download_media_thumbnail
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from .utils import delete_file
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@receiver(post_save, sender=Source)
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def source_post_save(sender, instance, created, **kwargs):
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# Triggered when a source is saved
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if created:
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# If the source is newly created schedule its indexing
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index_source_task(str(instance.pk), repeat=settings.INDEX_SOURCE_EVERY)
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@receiver(pre_delete, sender=Source)
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def source_post_delete(sender, instance, **kwargs):
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# Triggered just before a source is deleted, delete all media objects to trigger
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# the Media models post_delete signal
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for media in Media.objects.filter(source=instance):
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media.delete()
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@receiver(post_delete, sender=Source)
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def source_post_delete(sender, instance, **kwargs):
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# Triggered when a source is deleted
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delete_index_source_task(str(instance.pk))
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@receiver(post_save, sender=Media)
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def media_post_save(sender, instance, created, **kwargs):
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# Triggered when media is saved
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if created:
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# If the media is newly created fire a task off to download its thumbnail
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metadata = instance.loaded_metadata
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thumbnail_url = metadata.get('thumbnail', '')
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if thumbnail_url:
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download_media_thumbnail(str(instance.pk), thumbnail_url)
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@receiver(post_delete, sender=Media)
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def media_post_delete(sender, instance, **kwargs):
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# Triggered when media is deleted, delete media thumbnail
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if instance.thumb:
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delete_file(instance.thumb.path)
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