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https://github.com/pacnpal/thrillwiki_django_no_react.git
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96 lines
2.8 KiB
Python
96 lines
2.8 KiB
Python
"""
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Django signals for automatically updating statistics cache.
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This module contains signal handlers that invalidate the stats cache
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whenever relevant entities are created, updated, or deleted.
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"""
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from django.db.models.signals import post_save, post_delete
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from django.dispatch import receiver
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from django.core.cache import cache
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from apps.parks.models import Park, ParkReview, ParkPhoto, Company as ParkCompany
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from apps.rides.models import Ride, RollerCoasterStats, RideReview, RidePhoto, Company as RideCompany
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def invalidate_stats_cache():
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"""
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Invalidate the platform stats cache.
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This function is called whenever any entity that affects statistics
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is created, updated, or deleted.
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"""
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cache.delete("platform_stats")
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# Also update the timestamp for when stats were last invalidated
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from datetime import datetime
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cache.set("platform_stats_timestamp", datetime.now().isoformat(), 300)
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# Park signals
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@receiver(post_save, sender=Park)
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@receiver(post_delete, sender=Park)
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def park_changed(sender, **kwargs):
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"""Handle Park creation/deletion."""
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invalidate_stats_cache()
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# Ride signals
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@receiver(post_save, sender=Ride)
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@receiver(post_delete, sender=Ride)
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def ride_changed(sender, **kwargs):
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"""Handle Ride creation/deletion."""
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invalidate_stats_cache()
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# Roller coaster stats signals
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@receiver(post_save, sender=RollerCoasterStats)
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@receiver(post_delete, sender=RollerCoasterStats)
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def roller_coaster_stats_changed(sender, **kwargs):
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"""Handle RollerCoasterStats creation/deletion."""
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invalidate_stats_cache()
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# Company signals (both park and ride companies)
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@receiver(post_save, sender=ParkCompany)
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@receiver(post_delete, sender=ParkCompany)
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def park_company_changed(sender, **kwargs):
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"""Handle ParkCompany creation/deletion."""
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invalidate_stats_cache()
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@receiver(post_save, sender=RideCompany)
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@receiver(post_delete, sender=RideCompany)
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def ride_company_changed(sender, **kwargs):
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"""Handle RideCompany creation/deletion."""
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invalidate_stats_cache()
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# Photo signals
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@receiver(post_save, sender=ParkPhoto)
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@receiver(post_delete, sender=ParkPhoto)
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def park_photo_changed(sender, **kwargs):
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"""Handle ParkPhoto creation/deletion."""
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invalidate_stats_cache()
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@receiver(post_save, sender=RidePhoto)
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@receiver(post_delete, sender=RidePhoto)
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def ride_photo_changed(sender, **kwargs):
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"""Handle RidePhoto creation/deletion."""
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invalidate_stats_cache()
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# Review signals
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@receiver(post_save, sender=ParkReview)
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@receiver(post_delete, sender=ParkReview)
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def park_review_changed(sender, **kwargs):
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"""Handle ParkReview creation/deletion."""
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invalidate_stats_cache()
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@receiver(post_save, sender=RideReview)
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@receiver(post_delete, sender=RideReview)
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def ride_review_changed(sender, **kwargs):
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"""Handle RideReview creation/deletion."""
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invalidate_stats_cache()
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