CODEWITHSUNDEEP
phpsymfonyvalidation
thellmei
thellmei

Reputation: 243

Symfony Form Validation: UniqueEntity - multiple fields - including one nullable field

Situation: I have an form based on an entity. This entity has two properties country and staticRank and the tuple of both these both properties should be unique... BUT: the staticRank could isn't required and due to that, it can be null. I tried solving that problem using the UniqueEntity annotation:

@UniqueEntity(fields={"country", "staticRank"})

This isn't working like expected, because if the staticRank is null it should be a valid combination according to my definition. However, there are several tuples given with the same country and null (for the staticRank), so the constraint notes a violation.

Actual Question: Is there a way to archieve this behaviour without inheriting the "UniqueEntityValidator"?

EDIT: As far as I've experienced, the ignoreNull-property of the constraint would just allow both values to be null (or if the constraint is only set to a single field)

Upvotes: 1

Views: 820

Answers (1)

thellmei
thellmei

Reputation: 243

Solved that problem by passing a service into my Type (inherited from "AbstractType") and adding a constraint option:

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setRequired('myService');
    $resolver->setDefaults([
        // ...
        'constraints' => [
            new Callback([
                'callback' => [$this, 'checkCountryRankUniqueness']
            ])
        ]
    ]);
}

In that constraint method, I checked whether the staticRank is null. If it isn't null, it will iterate over all objects and check whether the combination is unique.

Upvotes: 1

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