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doctrine
Initializing a collection overwrites nulled field
Bug Report
| Q | A |
|---|---|
| BC Break | no? |
| Version | 3.2.1 down to 2.x |
Summary
When Doctrine fetches the entities for a PersistentCollection it overwrites the programmatically set null values in association fields for already managed (in the identity map) entities.
This happens by the if statement in https://github.com/doctrine/orm/blob/205b2f5f200c63f8cb22a26bfc0174071ed97d2c/src/Internal/Hydration/ObjectHydrator.php#L434.
Current behavior
The association field, which was just set to null by code, is overwritten with the persisted peer entity.
How to reproduce
In the following example there is a one-to-one association. One side gets set to null, but when a collection containing the entity is loaded, the field is restored with the peer entity.
https://github.com/insel-maz/doctrine-bug-collection-initialization-overwrites-field
Expected behavior
If an entity is already managed (in the identity map) Doctrine should not change the fields when fetching the database records for a PersistentCollection.
