Description

Now that UniqueValidator supports providing which fields to check for uniqueness it would be also useful to be able to provide errorPath like in UniqueEntityValidator.

Otherwise the errors are not shown when you use Form CollectionType and with an array of DTO's and normalizer option.

Example

class Input {
    /** @var MetadataInput[] */
    #[Unique(normalizer: [MetadataInput::class, 'getKeyForUniqueConstraint'], errorPath: 'key')
    public $metadata;
}

class MetadataInput {
  public $key;
  public $value;
}