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[Validator] UniqueEntity - add warning about not supported types and association mappings. #21262

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[Validator] UniqueEntity - add warning about not supported types and association mappings. #21262

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[Validator] UniqueEntity - add warning about not supported types and …
wkania Aug 1, 2025
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Fix spaces
wkania Aug 1, 2025
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Update UniqueEntity.rst
wkania Aug 2, 2025
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9 changes: 9 additions & 0 deletions reference/constraints/UniqueEntity.rst
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Expand Up @@ -402,4 +402,13 @@ blank, ``findBy()`` will be used. The method receives as its argument a
fields configured in the ``fields`` option). The method should return a
:phpfunction:`countable PHP variable <is_countable>`.

.. warning::

This constraint does not support Doctrine types such as ``simple_array``,
``json``, or ``jsonb``, nor does it handle association mappings like
``One-To-Many`` and ``Many-To-Many`` relationships. It may also not work
correctly with custom Doctrine types. To perform uniqueness checks on
such fields, you must define a custom ``repositoryMethod`` that
implements the desired logic.

.. _`race conditions`: https://en.wikipedia.org/wiki/Race_condition