Question 40896 in PHP Question posted in
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Symfony nested constraints don't work properly – PHP

I came across a strange problem with Symfony validation.
Seems that "nested" constraints don’t work properly.

For example, I create a string variable $data which needs to be validated.

$data = 'string';
$constraint = new AssertType('integer');
$violations = $validator->validate($data, $constraint);
self::assertTrue($violations->count() > 0);

In this case it works properly. We pass the string variable to the constraint which allows only integer. But if I create "nested" constraint the test won’t pass.

$data = 'string';
$constraint = new AssertRequired([
    new AssertType('integer'),
]);
$violations = $validator->validate($data, $constraint);
self::assertTrue($violations->count() > 0);

In this case the test is failed. The validator doesn’t find any violations.

Is it a bug? Or do I do something wrong?

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2

Answers


  1. 0

    if you want your data to be not empty (required) and to be a number:

    $data = 'string';

$validator = Validation::createValidator();
$violations = $validator->validate($data, [
    new NotBlank(),
    new Type(['integer'),
]);

    see https://symfony.com/doc/current/components/validator.html

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  2. 0

    There is no AssertRequired constraint.

    Since Symfony 5.4 you can use Attributes to combine constraints:

    #[AssertAll([
    new AssertNotNull(),
    new AssertRange(min: 3),
])]

    or

    #[AssertCollection(
    fields: [
        'foo' => [
            new AssertNotNull(),
            new AssertRange(min: 3),
        ],
        'bar' => new AssertRange(min: 5),
        'baz' => new AssertRequired([new AssertEmail()]),
    ]
)]

    https://symfony.com/blog/new-in-symfony-5-4-nested-validation-attributes

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