How to get all possible error messages of a Laravel Controller method

So I have a Laravel Application, which has many Controllers to handle various aspects of the applications.

Now each controller has various methods. Most of the methods have validations rules defined such as:

$validationArray = [
    'id'=>'required|integer',
    'status'=>'required|string'
];
$validator = Validator::make($request->all(),$validationArray);
if ($validator->fails()){
    return Response::json(['response'=>implode(', ',$validator->messages()->all())],422);
}

Now the following line:

return Response::json(['response'=>implode(', ',$validator->messages()->all())],422);

actually returns whatever is wrong with the validation rules.

My question is: Is there any way to get all possible error messages programmatically?

Of course, one way to do it is going around the rule by rule and make a list manually but there are hundreds of the methods scattered over various controllers.

So, if anyone could point me in the direction of taking all the error messages in some easier way, would be much appreciated.

Thank you in advance!

via Chebli Mohamed