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Donkie
5d812e269e
Each list endpoint parsed `sort` inline with a bare split(":"), so `?sort=name`
raised "not enough values to unpack" and `?sort=name:sideways` a KeyError from
SortOrder[...]. Both surfaced as a 500 (todo.md task 8).
parse_nested_field also gated on hasattr, so any attribute that merely existed
passed through to order_by() -- `?sort=metadata:asc` got as far as calling
.asc() on the MetaData object. It now checks the SQLAlchemy mapper's columns,
so only real columns are accepted; relationship traversal through filament. and
vendor. still works.
Sort parsing moves into a shared parse_sort() used by all four call sites, which
tolerates surrounding whitespace and rejects a missing colon, an empty field
name or an unknown direction with a message saying what was expected.
database/vendor.py turned out not to use parse_nested_field at all -- it did a
bare getattr(models.Vendor, fieldstr) -- so /vendor kept returning 500 even
after the helper was fixed. It now uses the shared helper like filament.py.
All three endpoints verified end-to-end: 400 for each malformed form, 200 for
valid single and multi-field sorts, and no unhandled exceptions in the log.