[DoctrineBridge][Form] Fix IdReader when indexing by primary foreign key #15251
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Port to Symfony 2.7 of PR #14372 . The
IdReader
class can now resolve association and determine the real id value.There is still room for improvement, though. Since I've added a
new IdReader
in the constructor, it is better to declareIdReader
asfinal
just to be safe.PS: sorry to keep you waiting, @webmozart . When merging both commit don't forget to add the
@deprecated
annotation, and thatSingleAssociationToIntIdEntity.php
is duplicated.