Add support for logging reverse relations in Binder history#277
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knokko merged 2 commits intoCodeYellowBV:masterfrom Feb 12, 2026
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…formatting in tests
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Changes
This PR adds the ability to include reverse relationships in the history log of a model. Previously, changes to a reverse ForeignKey (e.g., adding an Animal to a Zoo where the FK is on Animal would not appear in the Zoo's history.
Features
New Configuration Option: Added [include_reverse_relations] class options.
Reverse Relation Logging: When configured, the following actions on the child model now trigger a history entry on the parent model:
Implementation: Uses pre_save and pre-delete signals on the related (child) model to detect changes.
Utilizing DeferredM2M type to record these relation changes in the history changeset.
Documentation: Updated models.md with usage examples.
Testing: Added comprehensive tests test_reverse_relation_history.py and test_reverse_relation_no_child_history.py covering value changes, moves, and deletions. Validated that child models do not require history enabled for this feature to work on the parent.