File: apps.py

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python-django-ordered-model 3.7.4-2
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from django.apps import AppConfig, apps
from django.db.models.signals import post_delete


class OrderedModelConfig(AppConfig):
    name = "ordered_model"
    label = "ordered_model"

    def ready(self):
        from .models import OrderedModelBase

        for cls in apps.get_models():
            if issubclass(cls, OrderedModelBase):
                post_delete.connect(
                    cls._on_ordered_model_delete, sender=cls, dispatch_uid=cls.__name__
                )