laravel 接收get传值Request

刚学laravel：href跳转页面，如何控制器接收传值：

<?php

namespace App\Http\Controllers;

use App\Http\Controllers\BaseController;

use App\Lib\Api\BaseApi;
use Illuminate\Http\Request;
use function GuzzleHttp\json_encode;

class  CombinationController extends BaseController
{
    public function combination(Request $request)
    {

        dd($name =$request['portfolioType'] );

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