Laravel validation with required parameter without using array

Here my code :

$validated = request()->validate([
        'q' => 'required|string',
    ]);

I want the same without using an array. I tried this :

$validated = request()->validate('q', 'required|string');

Thank’s for your help.

Answer

You can use $request->has() to check if a parameter has been sent.

$request->has('q');

Request parameters are all strings by default, but you can do an extra check for null by using get with a default value.

if ($request->get('q', null) !== null) {
    // $q is set!
}