40 lines
1.7 KiB
Python
40 lines
1.7 KiB
Python
from django.db.models.signals import post_delete, post_save
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from django.dispatch import receiver
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from orchestra.core import services
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from . import helpers, settings
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from .models import Order
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# TODO perhas use cache = caches.get_request_cache() to cache an account delete and don't processes get_related_objects() if the case
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# FIXME https://code.djangoproject.com/ticket/24576
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# TODO build a cache hash table {model: related, model: None}
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@receiver(post_delete, dispatch_uid="orders.cancel_orders")
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def cancel_orders(sender, **kwargs):
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if sender._meta.app_label not in settings.ORDERS_EXCLUDED_APPS:
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instance = kwargs['instance']
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# Account delete will delete all related orders, no need to maintain order consistency
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if isinstance(instance, Order.account.field.rel.to):
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return
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if type(instance) in services:
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for order in Order.objects.by_object(instance).active():
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order.cancel()
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elif not hasattr(instance, 'account'):
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# FIXME Indeterminate behaviour
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related = helpers.get_related_object(instance)
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if related and related != instance:
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type(related).objects.get(pk=related.pk)
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@receiver(post_save, dispatch_uid="orders.update_orders")
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def update_orders(sender, **kwargs):
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if sender._meta.app_label not in settings.ORDERS_EXCLUDED_APPS:
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instance = kwargs['instance']
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if type(instance) in services:
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Order.objects.update_by_instance(instance)
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elif not hasattr(instance, 'account'):
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related = helpers.get_related_object(instance)
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if related and related != instance:
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Order.objects.update_by_instance(related)
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