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https://github.com/pacnpal/thrillwiki_django_no_react.git
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71 lines
2.9 KiB
Python
71 lines
2.9 KiB
Python
from django.contrib.contenttypes.models import ContentType
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from django.db import models
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from django.core.exceptions import ObjectDoesNotExist
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class CommentThreadManager(models.Manager):
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"""Manager for handling comment threads on both regular and historical models."""
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def for_instance(self, instance):
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"""Get comment threads for any model instance."""
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# Get the base model class if this is a historical instance
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if instance.__class__.__name__.startswith('Historical'):
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model_class = instance.instance.__class__
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instance_id = instance.instance.pk
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else:
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model_class = instance.__class__
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instance_id = instance.pk
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ct = ContentType.objects.get_for_model(model_class)
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return self.filter(content_type=ct, object_id=instance_id)
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def create_for_instance(self, instance, **kwargs):
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"""Create a comment thread for any model instance."""
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# Get the base model class if this is a historical instance
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if instance.__class__.__name__.startswith('Historical'):
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model_class = instance.instance.__class__
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instance_id = instance.instance.pk
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else:
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model_class = instance.__class__
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instance_id = instance.pk
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ct = ContentType.objects.get_for_model(model_class)
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return self.create(content_type=ct, object_id=instance_id, **kwargs)
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class ThreadedModelManager(models.Manager):
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"""Manager for models that have comment threads."""
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"""Manager for models that have comment threads."""
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def get_comment_threads(self, instance):
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"""Get comment threads for this instance."""
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from comments.models import CommentThread
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if not instance.pk:
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return CommentThread.objects.none()
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return CommentThread.objects.for_instance(instance)
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def add_comment_thread(self, instance, **kwargs):
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"""Create a comment thread for this instance."""
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from comments.models import CommentThread
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if not instance.pk:
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raise ObjectDoesNotExist("Cannot create comment thread for unsaved instance")
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return CommentThread.objects.create_for_instance(instance, **kwargs)
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def with_comment_threads(self):
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"""Get all instances with their comment threads."""
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from comments.models import CommentThread
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qs = self.get_queryset()
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content_type = ContentType.objects.get_for_model(self.model)
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# Get comment threads through a subquery
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threads = CommentThread.objects.filter(
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content_type=content_type,
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object_id=models.OuterRef('pk')
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)
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return qs.annotate(
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comment_count=models.Subquery(
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threads.values('object_id')
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.annotate(count=models.Count('id'))
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.values('count'),
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output_field=models.IntegerField()
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)
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) |