如何使用Laravel 4.2在单个查询(而不是查询循环)中大量插入或更新

$cardQueryList = [];
foreach($cards as $cardName => $quantity) {
    $cardQueryList[] = [
        'username' => $user->username,
        'card_uid' => $card->uid,
        'have_quantity' => $quantity
    ];
}

Collection::insert($cardQueryList);
$cardQueryList = [];
foreach($cards as $cardNam