How to pass parameters in Laravel Rule?

Question

I would like to move this code to the App\Rule:

//Currently in class AppServiceProvider extends ServiceProvider

Validator::extend('empty_if', function ($attribute, $value, $parameters, $validator) {
   return ($value != '' && request($parameters[0]) != '') ? false : true;
});

So that it should be this:

//in: App\Rules\EmptyIf

public function passes($attribute, $value, $parameters)
{
   return ($value != '' && request($parameters[0]) != '') ? false : true;
}

But my problem is, that I cannot pass $parameters with

Validator::extend('empty_if', 'App\Rules\EmptyIf@passes');

How would you pass parameters to Laravel Rule?

Answer 1

If I understand what you need correctly you don't need to extend the validator.

You seem to have class:

class EmptyIf extends Rule {
      public function passes($attribute, $value, $parameters) { }
}

Then you can just use this as:

$this->validate($data, [ "entry" => [ new EmptyIf() ] ]);

You might be able to do both using:

Validator::extend('empty_if', function ($attribute, $value, $parameters) {
    return (new EmptyIf())->passes($atribute, $value, $parameters);
 });