Using Laravel rules with custom validation rules #55702
Description
Laravel Version
12.13.0
PHP Version
8.4.7
Database Driver & Version
No response
Description
Use Laravel rules with custom validation rules.
However, nested fields do not behave as expected. Nested fields are considered not verifiable.
Is this usage appropriate?
Steps To Reproduce
Custom Validation Rules
namespace App\Rules;
use Closure;
use Illuminate\Contracts\Validation\ValidationRule;
use Illuminate\Support\Facades\Validator;
class ExampleRule implements ValidationRule
{
/**
* Run the validation rule.
*
* @param \Closure(string, ?string=): \Illuminate\Translation\PotentiallyTranslatedString $fail
*/
public function validate(string $attribute, mixed $value, Closure $fail): void
{
$validator = Validator::make(
[$attribute => $value],
[$attribute => ['date_format:Y/m/d']],
);
if ($validator->fails()) {
$fail('error');
}
}
}Tests
namespace Tests\Unit\Rules;
use App\Rules\ExampleRule;
use Illuminate\Support\Facades\Validator;
use Tests\TestCase;
class ExampleRuleTest extends TestCase
{
public function test_non_unnested_fields_behave_as_expected(): void
{
$validator = Validator::make(
['field' => '2025-05-01'], // Value that do not pass validation
['field' => [new ExampleRule()],
]);
$this->assertSame(true, $validator->fails()); // OK
}
public function test_nested_fields_do_not_behave_as_expected(): void
{
$validator = Validator::make(
['field' => ['foo' => '2025-05-01']], // Value that do not pass validation
['field.foo' => [new ExampleRule()]],
);
$this->assertSame(true, $validator->fails()); // NG
}
}Dump
Illuminate\Validation\Validator::isValidatable()Illuminate\Validation\Validator::presentOrRuleIsImplicit()Illuminate\Validation\Concerns\ValidatesAttributes::validatePresent()
trait ValidatesAttributes
{
public function validatePresent($attribute, $value)
{
dump([$this->data, $attribute, $value]);
return Arr::has($this->data, $attribute);
}
}array:3 [
0 => array:1 [
"field" => array:1 [
"foo" => "2025-05-01"
]
]
1 => "field.foo"
2 => "2025-05-01"
] // vendor/laravel/framework/src/Illuminate/Validation/Concerns/ValidatesAttributes.php:1854
array:3 [
0 => array:1 [
"field__dot__9tDDcjCZCvvl01xyfoo" => "2025-05-01"
]
1 => "field.foo"
2 => null
] // vendor/laravel/framework/src/Illuminate/Validation/Concerns/ValidatesAttributes.php:1854