我知道这是常见的问题，但是我遇到了使用href路由URL的正确方法的问题
"我试过了"

<a href="{{ route('staff.emvvalidationdetails.emvcard',emv.evd_id)}}">

• • 但它返回一个错误**

Use of undefined constant emv - assumed 'emv' (this will throw an Error in a future version of PHP)

• • 路线**

Route::get('emvvalidationdetailsemvcard', 'EmvvalidationdetailsController@emvcard')->name('staff.emvvalidationdetails.emvcard');

• • 主计长**

public function emvcard(Request $request, GetEmvDetailsByEvdId $getEmvDetailsByEvdId)
{

    $records = $getEmvDetailsByEvdId->execute($request->evd_id);
    // return response()->json($records);
    $breadcrumbs_main = 'Validated Accounts';
    $bradcrumbs_details = '-';
    return view('staff.emvvalidationdetails.update_card',['data_object' => $records],compact('breadcrumbs_main', 'breadcrumbs_details'));
}