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Ran 20 Jul 2026 04:51PM UTC

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Committed 20 Jul 2026 04:48PM UTC coverage: 99.957% (+0.001%) from 99.956%

Job # 29761174005.2

Build Type

push

github

Committed by

web-flow

Commit Message

Fix CachedInstanceLoader to raise MultipleObjectsReturned on duplicate import id (#2162) (#2169)

* fix: raise MultipleObjectsReturned for duplicate import id in CachedInstanceLoader (#2162)

CachedInstanceLoader built its instance cache with a dict comprehension
keyed on the import id, so when two rows shared an import id the second
silently overwrote the first and get_instance() returned only the last
match. ModelInstanceLoader, which calls QuerySet.get(), already raises
MultipleObjectsReturned in this case. Track duplicate import ids while
building the cache and raise the same exception from get_instance() so
the two loaders behave consistently.

* fix: address cached loader duplicate review

* Don't leak the import id value in the duplicate-match error

Per review: the user-supplied import id value was interpolated into the
MultipleObjectsReturned message, so an attacker-controlled string could reach
logs that may render it unescaped. Report only the configured field name and
assert the value no longer appears in the message.

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