22 lines
568 B
Python
22 lines
568 B
Python
from django.core.cache import cache
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from django.db.models.signals import post_delete, post_save
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from django.dispatch import receiver
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from .models import Material
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CATEGORY_TREE_CACHE_KEY = 'material:category_tree:approved'
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def invalidate_category_tree_cache():
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cache.delete(CATEGORY_TREE_CACHE_KEY)
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@receiver(post_save, sender=Material)
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def _on_material_saved(sender, instance, **kwargs):
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invalidate_category_tree_cache()
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@receiver(post_delete, sender=Material)
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def _on_material_deleted(sender, instance, **kwargs):
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invalidate_category_tree_cache()
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