UniqueEntity message can't include the value

[javiereguiluz]

Constraint messages can include {{ value }} in the message option to display the wrong value introduced by the user. Apparently, you can't do the same in the UniqueEntity constraint, so it should be documented here: http://symfony.com/doc/current/reference/constraints/UniqueEntity.html#message

[HeahDude]

Yes, it's been introduced in 2.8 (ref symfony/symfony#15279).

[javiereguiluz]

I'm getting reports (via email) from people who can't make this work. By the way, what's the {{ value }} when the UniqueEntity is matched against several values?

[HeahDude]

The value always represents the validated value (ref https://github.com/symfony/symfony/blob/master/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php#L131).

By default it is not used in the validation message (ref https://github.com/symfony/symfony/blob/master/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntity.php#L28).

Using it in a custom message should work nevertheless.