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https://github.com/pacnpal/thrilltrack-explorer.git
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d6ff4cc3a3
- Created a base email template (base.html) for consistent styling across all emails. - Added moderation approval email template (moderation_approved.html) to notify users of approved submissions. - Added moderation rejection email template (moderation_rejected.html) to inform users of required changes for their submissions. - Created password reset email template (password_reset.html) for users requesting to reset their passwords. - Developed a welcome email template (welcome.html) to greet new users and provide account details and tips for using ThrillWiki.
253 lines
9.0 KiB
Python
253 lines
9.0 KiB
Python
"""
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Signal handlers for automatic search vector updates.
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These signals ensure search vectors stay synchronized with model changes,
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eliminating the need for manual re-indexing.
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Signal handlers are only active when using PostgreSQL with PostGIS backend.
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"""
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from django.db.models.signals import post_save, pre_save
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from django.dispatch import receiver
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from django.conf import settings
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from django.contrib.postgres.search import SearchVector
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from apps.entities.models import Company, RideModel, Park, Ride
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# Only register signals if using PostgreSQL with PostGIS
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_using_postgis = 'postgis' in settings.DATABASES['default']['ENGINE']
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if _using_postgis:
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# ==========================================
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# Company Signals
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# ==========================================
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@receiver(post_save, sender=Company)
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def update_company_search_vector(sender, instance, created, **kwargs):
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"""
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Update search vector when company is created or updated.
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Search vector includes:
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- name (weight A)
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- description (weight B)
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"""
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# Update the company's own search vector
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Company.objects.filter(pk=instance.pk).update(
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search_vector=(
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SearchVector('name', weight='A', config='english') +
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SearchVector('description', weight='B', config='english')
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)
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)
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@receiver(pre_save, sender=Company)
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def check_company_name_change(sender, instance, **kwargs):
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"""
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Track if company name is changing to trigger cascading updates.
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Stores the old name on the instance for use in post_save signal.
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"""
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if instance.pk:
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try:
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old_instance = Company.objects.get(pk=instance.pk)
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instance._old_name = old_instance.name
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except Company.DoesNotExist:
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instance._old_name = None
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else:
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instance._old_name = None
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@receiver(post_save, sender=Company)
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def cascade_company_name_updates(sender, instance, created, **kwargs):
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"""
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When company name changes, update search vectors for related objects.
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Updates:
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- All RideModels from this manufacturer
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- All Rides from this manufacturer
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"""
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# Skip if this is a new company or name hasn't changed
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if created or not hasattr(instance, '_old_name'):
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return
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old_name = getattr(instance, '_old_name', None)
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if old_name == instance.name:
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return
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# Update all RideModels from this manufacturer
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ride_models = RideModel.objects.filter(manufacturer=instance)
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for ride_model in ride_models:
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RideModel.objects.filter(pk=ride_model.pk).update(
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search_vector=(
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SearchVector('name', weight='A', config='english') +
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SearchVector('manufacturer__name', weight='A', config='english') +
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SearchVector('description', weight='B', config='english')
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)
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)
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# Update all Rides from this manufacturer
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rides = Ride.objects.filter(manufacturer=instance)
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for ride in rides:
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Ride.objects.filter(pk=ride.pk).update(
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search_vector=(
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SearchVector('name', weight='A', config='english') +
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SearchVector('park__name', weight='A', config='english') +
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SearchVector('manufacturer__name', weight='B', config='english') +
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SearchVector('description', weight='B', config='english')
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)
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)
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# ==========================================
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# Park Signals
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# ==========================================
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@receiver(post_save, sender=Park)
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def update_park_search_vector(sender, instance, created, **kwargs):
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"""
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Update search vector when park is created or updated.
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Search vector includes:
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- name (weight A)
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- description (weight B)
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"""
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# Update the park's own search vector
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Park.objects.filter(pk=instance.pk).update(
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search_vector=(
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SearchVector('name', weight='A', config='english') +
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SearchVector('description', weight='B', config='english')
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)
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)
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@receiver(pre_save, sender=Park)
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def check_park_name_change(sender, instance, **kwargs):
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"""
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Track if park name is changing to trigger cascading updates.
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Stores the old name on the instance for use in post_save signal.
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"""
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if instance.pk:
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try:
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old_instance = Park.objects.get(pk=instance.pk)
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instance._old_name = old_instance.name
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except Park.DoesNotExist:
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instance._old_name = None
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else:
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instance._old_name = None
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@receiver(post_save, sender=Park)
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def cascade_park_name_updates(sender, instance, created, **kwargs):
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"""
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When park name changes, update search vectors for related rides.
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Updates:
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- All Rides in this park
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"""
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# Skip if this is a new park or name hasn't changed
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if created or not hasattr(instance, '_old_name'):
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return
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old_name = getattr(instance, '_old_name', None)
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if old_name == instance.name:
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return
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# Update all Rides in this park
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rides = Ride.objects.filter(park=instance)
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for ride in rides:
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Ride.objects.filter(pk=ride.pk).update(
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search_vector=(
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SearchVector('name', weight='A', config='english') +
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SearchVector('park__name', weight='A', config='english') +
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SearchVector('manufacturer__name', weight='B', config='english') +
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SearchVector('description', weight='B', config='english')
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)
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)
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# ==========================================
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# RideModel Signals
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# ==========================================
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@receiver(post_save, sender=RideModel)
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def update_ride_model_search_vector(sender, instance, created, **kwargs):
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"""
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Update search vector when ride model is created or updated.
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Search vector includes:
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- name (weight A)
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- manufacturer__name (weight A)
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- description (weight B)
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"""
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RideModel.objects.filter(pk=instance.pk).update(
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search_vector=(
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SearchVector('name', weight='A', config='english') +
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SearchVector('manufacturer__name', weight='A', config='english') +
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SearchVector('description', weight='B', config='english')
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)
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)
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@receiver(pre_save, sender=RideModel)
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def check_ride_model_manufacturer_change(sender, instance, **kwargs):
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"""
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Track if ride model manufacturer is changing.
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Stores the old manufacturer on the instance for use in post_save signal.
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"""
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if instance.pk:
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try:
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old_instance = RideModel.objects.get(pk=instance.pk)
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instance._old_manufacturer = old_instance.manufacturer
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except RideModel.DoesNotExist:
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instance._old_manufacturer = None
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else:
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instance._old_manufacturer = None
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# ==========================================
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# Ride Signals
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# ==========================================
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@receiver(post_save, sender=Ride)
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def update_ride_search_vector(sender, instance, created, **kwargs):
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"""
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Update search vector when ride is created or updated.
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Search vector includes:
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- name (weight A)
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- park__name (weight A)
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- manufacturer__name (weight B)
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- description (weight B)
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"""
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Ride.objects.filter(pk=instance.pk).update(
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search_vector=(
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SearchVector('name', weight='A', config='english') +
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SearchVector('park__name', weight='A', config='english') +
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SearchVector('manufacturer__name', weight='B', config='english') +
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SearchVector('description', weight='B', config='english')
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)
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)
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@receiver(pre_save, sender=Ride)
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def check_ride_relationships_change(sender, instance, **kwargs):
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"""
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Track if ride park or manufacturer are changing.
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Stores old values on the instance for use in post_save signal.
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"""
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if instance.pk:
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try:
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old_instance = Ride.objects.get(pk=instance.pk)
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instance._old_park = old_instance.park
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instance._old_manufacturer = old_instance.manufacturer
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except Ride.DoesNotExist:
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instance._old_park = None
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instance._old_manufacturer = None
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else:
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instance._old_park = None
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instance._old_manufacturer = None
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