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Fix _dto_to_dict for slots=True dataclasses

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The defquery conversion routes inter-service results through
_dto_to_dict which checked __dict__ (absent on slots dataclasses),
producing {"value": obj} instead of proper field dicts. This broke
TicketDTO deserialization in the cart app. Check __dataclass_fields__
first and use dataclasses.asdict() for correct serialization.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
giles
2026-03-04 08:24:40 +00:00
parent 1f36987f77
commit 41e803335a
1 changed files with 4 additions and 1 deletions
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5
shared/sx/primitives_io.py
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@@ -225,7 +225,10 @@ def _dto_to_dict(obj: Any) -> dict[str, Any]:
keys for any datetime-valued field so sx handlers can build URL paths keys for any datetime-valued field so sx handlers can build URL paths
without parsing date strings. without parsing date strings.
""" """
if hasattr(obj, "_asdict"): if hasattr(obj, "__dataclass_fields__"):
import dataclasses
d = dataclasses.asdict(obj)
elif hasattr(obj, "_asdict"):
d = dict(obj._asdict()) d = dict(obj._asdict())
elif hasattr(obj, "__dict__"): elif hasattr(obj, "__dict__"):
d = {k: v for k, v in obj.__dict__.items() if not k.startswith("_")} d = {k: v for k, v in obj.__dict__.items() if not k.startswith("_")}