from django.apps import AppConfig

class InventoryConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'inventory'

    def ready(self):
        import inventory.signals
        from decimal import Decimal
        from inventory.models import VatRate
        VatRate.objects.get_or_create(rate=Decimal('0.15'), is_active=True)