#10237: Symmetry is lost when inheriting a self-referential m2m field ------------------------------------------+--------------------------------- Reporter: justinlilly | Owner: justinlilly Status: new | Milestone: Component: Database layer (models, ORM) | Version: 1.0 Keywords: mti, m2m, inheritance | Stage: Unreviewed Has_patch: 1 | ------------------------------------------+--------------------------------- When extending a model (via MTI, not ABC), the implicit symmetrical=True reference wasn't being maintained because the current class was being checked against the parent (which weren't the same type). By changing this to an isinstance call instead of a !__class!__ comparison, it properly compares to parent objects.
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