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27 lines
903 B
27 lines
903 B
from django.db.models.signals import post_save, post_delete, m2m_changed
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from django.dispatch import receiver
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from utils.cache import invalidate_cache_patterns
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from .models import Author, Book, BookCollection, Category
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TARGET_MODELS = [Author, Book, BookCollection, Category]
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def invalidate_library_cache():
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"""
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Invalidates all Redis cache keys for library API views.
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"""
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return invalidate_cache_patterns("*library_api*", "*library_books*")
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@receiver(post_save)
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@receiver(post_delete)
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def clear_library_cache_on_save_or_delete(sender, instance, **kwargs):
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if sender in TARGET_MODELS:
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invalidate_library_cache()
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@receiver(m2m_changed)
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def clear_library_cache_on_m2m(sender, instance, action, **kwargs):
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if action in ('post_add', 'post_remove', 'post_clear'):
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if isinstance(instance, (Book, BookCollection, Category)):
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invalidate_library_cache()
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