cakephp: Validation rule can not be added without a name

This is a (multiple allowed):

• bug

• enhancement

• feature-discussion (RFC)

• CakePHP Version: 4.0.0

What you did

this doesn’t work:

public function validationDefault(Validator $validator): Validator
    {
        return $validator
            ->add('date_field', [
                ['rule' => 'date', 'provider' => 'custom'],
            ])
     }

this works:

public function validationDefault(Validator $validator): Validator
    {
        return $validator
            ->add('date_field', [
                'validationRuleName' => ['rule' => 'date', 'provider' => 'custom'],
            ])
     }

What happened

Argument 1 passed to Cake\Validation\ValidationSet::add() must be of the type string, int given, called in vendor/cakephp/cakephp/src/Validation/Validator.php on line 475

What you expected to happen

Validation rule added successfully without having to add a name

Possible solution

revert add-method in ValidationSet class from public function add(string $name, $rule) back to public function add($name, $rule)