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Revision: Tue, 30 May 2023 16:57:33 GMT
v3.1 – outdated
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Symfony Validator

You can validate your data using the Symfony Validator package. Spiral provides a Symfony Validator bridge component that allows you to quickly and easily integrate Symfony Validator into a project based on the Spiral Framework.

Note
Read more about Validation in the Spiral Framework.

Installation

To install the component:

composer require spiral-packages/symfony-validator

To enable the component, you just need to add Spiral\Validation\Symfony\Bootloader\ValidatorBootloader to the bootloaders list, which is located in the class of your application.

php
namespace App;

use Spiral\Validation\Symfony\Bootloader\ValidatorBootloader;

class App extends Kernel
{
    protected const LOAD = [
        // ...
        ValidatorBootloader::class,
        // ...
    ];
}

Usage

First of all, need to create a filter that will receive incoming data that will be validated by the validator.

Filter with attributes

Create a filter class and extend it from the base filter class with attributes Spiral\Validation\Symfony\AttributesFilter. Define the required properties, and add attributes to them indicating the data source and validation rules. All available validation rules are described in the official Symfony documentation.

php
namespace App\Filter;

use Spiral\Filters\Attribute\Input\Post;
use Spiral\Validation\Symfony\Attribute\Input\File;
use Spiral\Validation\Symfony\AttributesFilter;
use Symfony\Component\HttpFoundation\File\UploadedFile;
use Symfony\Component\Validator\Constraints;

final class CreatePostFilter extends AttributesFilter
{
    #[Post]
    #[Constraints\NotBlank]
    #[Constraints\Length(min: 5)]
    public string $title;

    #[Post]
    #[Constraints\NotBlank]
    #[Constraints\Length(min: 5)]
    public string $slug;

    #[Post]
    #[Constraints\NotBlank]
    #[Constraints\Positive]
    public int $sort;
    
    #[File]
    #[Constraints\Image]
    public UploadedFile $image;
}

Filter with FilterDefinition

If you prefer to configure validation rules in an array, you can use a filter with a filterDefinition method definition. Create a filter class and extend it from the base filter class Spiral\Filters\Model\Filter, add Spiral\Filters\Model\HasFilterDefinition interface. Implement the filterDefinition method, which should return a Spiral\Validation\Symfony\FilterDefinition object with data mapping rules and validation rules.

php
namespace App\Filter;

use Spiral\Filters\Model\Filter;
use Spiral\Filters\Model\FilterDefinitionInterface;
use Spiral\Filters\Model\HasFilterDefinition;
use Spiral\Validation\Symfony\FilterDefinition;
use Symfony\Component\Validator\Constraints;
use Spiral\Filters\Attribute\Input\Post;
use Spiral\Validation\Symfony\Attribute\Input\File;

final class CreatePostFilter extends Filter implements HasFilterDefinition
{
    #[Post]
    public string $title;

    #[Post]
    public string $slug;

    #[Post]
    public int $sort;
    
    #[File]
    public UploadedFile $image;
    
    public function filterDefinition(): FilterDefinitionInterface
    {
        return new FilterDefinition(
            [
                'title' => [new Constraints\NotBlank(), new Constraints\Length(min: 5)],
                'slug' => [new Constraints\NotBlank(), new Constraints\Length(min: 5)],
                'sort' => [new Constraints\NotBlank(), new Constraints\Positive()],
                'image' => [new Constraints\Image()]
            ]
        );
    }
}

If you prefer to configure fields mapping in an array, you can define fields mapping in a filterDefinition method.

php
namespace App\Filter;

use Spiral\Filters\Model\Filter;
use Spiral\Filters\Model\FilterDefinitionInterface;
use Spiral\Filters\Model\HasFilterDefinition;
use Spiral\Validation\Symfony\FilterDefinition;
use Symfony\Component\Validator\Constraints;

final class CreatePostFilter extends Filter implements HasFilterDefinition
{
    public function filterDefinition(): FilterDefinitionInterface
    {
        return new FilterDefinition(
            [
                'title' => [new Constraints\NotBlank(), new Constraints\Length(min: 5)],
                'slug' => [new Constraints\NotBlank(), new Constraints\Length(min: 5)],
                'sort' => [new Constraints\NotBlank(), new Constraints\Positive()],
                'image' => [new Constraints\Image()]
            ],
            [
                'title' => 'title',
                'slug' => 'slug',
                'sort' => 'sort',
                'image' => 'symfony-file:image'
            ]
        );
    }
}

Note
Read more about Filters in the Spiral Framework.

Request validation

When requesting a filter from a container, the data will be automatically validated. When validation errors occur, a Spiral\Filters\Exception\ValidationException containing validation errors will be thrown.

php
use App\Filter\CreatePostFilter;
use Spiral\Filters\Exception\ValidationException;

try {
    $filter = $this->container->get(CreatePostFilter::class); 
} catch (ValidationException $e) {
    var_dump($e->errors); // Errors processing
}