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@@ -1407,9 +1407,10 @@ class MACAddress(PrimaryModel):
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@cached_property
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def is_primary(self):
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- if self.assigned_object and hasattr(self.assigned_object, 'primary_mac_address'):
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- if self.assigned_object.primary_mac_address and self.assigned_object.primary_mac_address.pk == self.pk:
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- return True
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+ # Compare against primary_mac_address_id (a column already loaded on the assigned object) rather than
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+ # dereferencing primary_mac_address, to avoid an extra query per object in list responses.
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+ if (obj := self.assigned_object) is not None and hasattr(obj, 'primary_mac_address_id'):
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+ return obj.primary_mac_address_id == self.pk
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return False
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def clean(self, *args, **kwargs):
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