Add additional Logical validation in Laravel FormRequest

UpdatePasswordRequest.php

<?php

namespace App\Http\Requests;

use Illuminate\Contracts\Validation\Validator;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Support\Facades\Hash;

class ProfileUpdatePasswordRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        // check user is logged or not
        return auth()->check();
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'current_password' => 'bail|required|string|max:255',
            'new_password' => 'bail|required|string|max:255|confirmed|min:8',
        ];
    }

    /**
     * Validator instance
     * @param Validator $validator
     */
    public function withValidator(Validator $validator): void
    {
        $validator->after([$this, "afterValidation"]);
    }

    /**
     * After Rule validation
     * @param Validator $validator
     */
    public function afterValidation(Validator $validator)
    {
        // validate current user password
        $this->didMatchCurrentPassword($validator);
    }

    /**
     * Check Current user password match or not
     * @param Validator $validator
     */
    private function didMatchCurrentPassword(Validator $validator)
    {
        // typed current password in form
        $typed_current_password = $this->input('current_password');

        // if current password not match with auth password
        if (! Hash::check($typed_current_password, auth()->user()->getAuthPassword())){
            $validator->errors()->add('current_password', 'Current password did not match');
        }
    }

}