How to validate array of arrays in Symfony 4

Question

I want to know how can I validate array of arrays in symfony. My validation rules are:

User - NotBlank
Date - Date and NotBlank
Present - NotBlank

So far I have done this:

$validator = Validation::createValidator();

$constraint = new Assert\Collection(array(
        'user' => new Assert\NotBlank(),
        'date' => new Assert\Date(),
        'present' => new Assert\NotBlank()
));

$violations = $validator->validate($request->request->get('absences')[0], $constraint);

But the problem is that it only allows to validate single array eg.
$request->request->get('absences')[0].

Here is how the array looks like:

Possible duplicate of Use a custom constraint/validator in symfony form type — Mike Doe
– Mike Doe, Commented Nov 19, 2018 at 12:11

xYundy · Accepted Answer · 2020-10-07 12:34:02Z

20

You have to put the Collection constraint inside All constraint:

When applied to an array (or Traversable object), this constraint allows you to apply a collection of constraints to each element of the array.

So, your code will probably look like this:

$constraint = new Assert\All(['constraints' => [
    new Assert\Collection([
        'user' => new Assert\NotBlank(),
        'date' => new Assert\Date(),
        'present' => new Assert\NotBlank()
    ])
]]);

Update: if you want to use annotations for this, it'll look something like this:

@Assert\All(
    constraints={
        @Assert\Collection(
            fields={
                "user"=@Assert\NotBlank(),
                "date"=@Assert\Date(),
                "present"=@Assert\NotBlank()
            }
        )
    }
)

edited Oct 7, 2020 at 12:34

xYundy

837 bronze badges

answered Nov 19, 2018 at 12:50

Bartosz Zasada

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5 Comments

Martin Over a year ago

Thanks. I was looking at the All assertion, but did not figure it out, that I can pass Collection into all Assertion.

reddy Over a year ago

Hi how do you write this in annotation form?

Bartosz Zasada Over a year ago

Hi @reddy, sorry, I only just saw your question. I updated my answer.

Karol Gasienica Over a year ago

How to validate if there's items > 0 :) ?

Kevin Kopf Over a year ago

Six years later, still helpful!

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