small / forms
Provide PHP class to validate api data.
    2.1.1
    2025-10-02 20:55 UTC
Requires
- php: >=8.3
 - small/collection: 3.*
 
Requires (Dev)
README

            

About
This project provides a data validation forms.
Useful to validate entry api data.
It is compatible with Symfony constraints annotations
Install
composer require small/forms
Inline forms
You can easily create a form inside your controller action.
For example, we want to check that this entry data match our controller action :
\Small\Forms\Form\FormBuilder::createInlineForm()
    ->addField(
        'name', 
        new \Small\Forms\Form\Field\Type\StringType(),
        [new \Small\Forms\ValidationRule\ValidateNumberCharsLessThan(256)]
    )->addField('age', new \Small\Forms\Form\Field\Type\IntType())
;
try {
    $form->fillFromSymfonyRequest($request)
        ->validate($messages = new \Small\Collection\Collection\StringCollection())
    ;
} catch (\Small\Forms\ValidationRule\Exception\ValidationFailException) {
    return new \Symfony\Component\HttpFoundation\JsonResponse($messages, \Symfony\Component\HttpFoundation\Response::HTTP_BAD_REQUEST);
}
$arrayData = $form->toArray();
Class forms
If you want to reuse your form, you can declare it as a class :
namespace App\Form;
class PersonForm extends \Small\Forms\Form\AbstractForm
{
    public function build(): self {
        
        $this->addField(
            'name', 
            new \Small\Forms\Form\Field\Type\StringType(),
            [new \Small\Forms\ValidationRule\ValidateNumberCharsLessThan(256)]
        );
        
        $this->addField('age', new \Small\Forms\Form\Field\Type\IntType());
        
    }
    
}
And simply use it in your controllers :
try {
    $form = \Small\Forms\Form\FormBuilder::createFromFormClass(App\Form\PersonForm::class)
        ->fillFromSymfonyRequest($request)
        ->validate($messages = new \Small\Collection\Collection\StringCollection())
    ;
} catch (\Small\Forms\ValidationRule\Exception\ValidationFailException) {
    return new \Symfony\Component\HttpFoundation\JsonResponse($messages, \Symfony\Component\HttpFoundation\Response::HTTP_BAD_REQUEST);
}
$arrayData = $form->toArray();
Standard objects with attributes
You can also create a form directly from object
namespace App\DTO;
use Small\Forms\Modifier\NullIfEmptyModifier;use Small\Forms\ValidationRule\ValidateNotEmpty;
use Small\Forms\ValidationRule\ValidateGreaterOrEqual;
class Person
{
    #[ValidateNotEmpty]
    private string $name;
    #[ValidateGreaterThanOrEqual(18)]
    #[NullIfEmptyModifier]
    private int $age;
}
namespace App\Entity;
use Symfony\Component\Validator\Constraints as Assert;
class Employe
{
    
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column]
    private ?int $id = null;
    #[ORM\Column]
    #[Assert\NotBlank]
    private string $name;
    #[ORM\Column]
    private int $age;
    #[ORM\Column]
    private int $idService;
    
    #[ORM\ManyToOne(inversedBy: 'Service')]
    #[ORM\JoinColumn(name: "idService", referencedColumnName: "id", nullable: true)]
    private Service|null $service = null;
}
try {
    $form = \Small\Forms\Form\FormBuilder::createFromAdapter(
        new \Small\Forms\Adapter\AnnotationAdapter($person)
    )->validate($messages = new \Small\Collection\Collection\StringCollection())
    ->hydrate($employe = new App\Entity\Employe());
} catch (\Small\Forms\ValidationRule\Exception\ValidationFailException) {
    return new \Symfony\Component\HttpFoundation\JsonResponse($messages, \Symfony\Component\HttpFoundation\Response::HTTP_BAD_REQUEST);
}
$useCase->joinCompanyUseCase($employe);
$form->fillFromObject($employe)
    ->hydrate($person)
;
return new \Symfony\Component\HttpFoundation\JsonResponse($person);
The validation rules will be parsed from your entity class php attributes.
Symfony DTO or entities
You can also create a form from DTO object
namespace App\DTO;
use Symfony\Component\Validator\Constraints as Assert;
class Person
{
    #[Assert\NotBlank]
    private string $name;
    #[Assert\GreaterThanOrEqual(18)]
    private int $age;
}
namespace App\Entity;
use Symfony\Component\Validator\Constraints as Assert;
class Employe
{
    
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column]
    private ?int $id = null;
    #[ORM\Column]
    #[Assert\NotBlank]
    private string $name;
    #[ORM\Column]
    private int $age;
    #[ORM\Column]
    private int $idService;
    
    #[ORM\ManyToOne(inversedBy: 'Service')]
    #[ORM\JoinColumn(name: "idService", referencedColumnName: "id", nullable: true)]
    private Service|null $service = null;
}
try {
    $form = \Small\Forms\Form\FormBuilder::createFromAdapter(
        new \Small\Forms\Adapter\SymfonyAnnotationAdapter($person)
    )->validate($messages = new \Small\Collection\Collection\StringCollection())
    ->hydrate($employe = new App\Entity\Employe());
} catch (\Small\Forms\ValidationRule\Exception\ValidationFailException) {
    return new \Symfony\Component\HttpFoundation\JsonResponse($messages, \Symfony\Component\HttpFoundation\Response::HTTP_BAD_REQUEST);
}
$useCase->joinCompanyUseCase($employe);
$form->fillFromObject($employe)
    ->hydrate($person)
;
return new \Symfony\Component\HttpFoundation\JsonResponse($person);
The validation rules will be parsed from your entity class php attributes.
List of validation rules
- ValidateAtLeastOneOf
 - ValidateBoolean
 - ValidateCallback
 - ValidateChoice
 - ValidateCountLessOrEqualThan
 - ValidateCountGreaterThan
 - ValidateCountLessOrEqualThan
 - ValidateCountLessThan
 - ValidateDateTime
 - ValidateDecimal
 - ValidateDivisibleBy
 - ValidateEmail
 - ValidateString
 - ValidateStringArray
 - ValidateUnique
 - ValidateDateTime
 - ValidateDivisibleBy
 - ValidateEmail
 - ValidateEmpty
 - ValidateEqual
 - ValidateFloat
 - ValidateFloatArray
 - ValidateGreater
 - ValidateGreaterOrEqual
 - ValidateInt
 - ValidateIntArray
 - ValidateIsFalse
 - ValidateIsNull
 - ValidateIsTrue
 - ValidateJson
 - ValidateLess
 - ValidateLessOrEqual
 - ValidateMatchRegex
 - ValidateMixedArray
 - ValidateNegativeNumber
 - ValidateNotEmpty
 - ValidateNotEqual
 - ValidateNotMatchRegex
 - ValidateNotNull
 - ValidateNumberCharsBetween
 - ValidateNumberCharLessThan
 - ValidatePositiveNumber
 - ValidateRange
 - ValidateRequired
 - ValidateChoice
 - ValidateSequencialy
 - ValidateString
 - ValidateStringArray
 - ValidateUnique
 
List of modifiers
- ArrayToCollectionModifier
 - ExplodeModifier
 - FalseIfEmptyModifier
 - FormBooleanToPhpModifier
 - ImplodeModifier
 - LTrimModifier
 - NullIfEmptyModifier
 - RoundModifier
 - RTrimModifier
 - StringToDateTimeImmutableModifier
 - StringToDateTimeModifier
 - SubStrModifier
 - ToLowerModifier
 - ToUpperModifier
 - TrimModifier
 - UcFirstModifier
 - UcWordsModifier