Question

我的刀片文件--->

{!! Form::open(['url'=>'/cart/update', 'method'=>'POST']) !!}
<div class="color-quality">
     <div class="color-quality-right">
     <input type="number" name="qty" value="{{ $cartProduct->quantity }}" min="1">
     <input type="hidden" name="id" value="{{ $cartProduct->id }}">
     <input type="submit" name="submit" value="update" class="item_add hvr-outline-out button2">
     {{-- <button type="submit" name="submit" value="update" class="item_add hvr-outline-out button2">Update</button> --}}
     </div>
     </div>
{!! Form::close() !!}

路由文件->

Route::post('/cart/update', 'CartController@updateCart');

控制器文件

public function updateCart(Request $request){
    $qty= $request->qty;
    $id = $request->id;

    /*echo $qty;
    echo "<br>";
    echo $id;*/
   Cart::update($id, $qty);
   return redirect('/cart/show');

}

当我回显文件并按UPDATE btn时，我得到这个ID和数量编号的结果... 返回，另一方面，出现一些错误... ErrorException（E_WARNING）为foreach（）提供了无效的参数

C：\ xampp \ htdocs \ larashop \ vendor \ darryldecode \ cart \ src \ Darryldecode \ Cart \ Cart.php *更新购物车 * * @参数$ id * @参数$ data * * $ data将是一个关联数组，您不需要传递所有数据，只需传递键值 *您要更新的项目的* * @返回布尔 * / 公共功能更新（$ id，$ data） { if（$ this-> fireEvent（'updating'，$ data）=== false）{ 返回false； }

    $cart = $this->getContent();

    $item = $cart->pull($id);

    foreach ($data as $key => $value) {
        // if the key is currently "quantity" we will need to check if an arithmetic
        // symbol is present so we can decide if the update of quantity is being added
        // or being reduced.
        if ($key == 'quantity') {
            // we will check if quantity value provided is array,
            // if it is, we will need to check if a key "relative" is set
            // and we will evaluate its value if true or false,
            // this tells us how to treat the quantity value if it should be updated
            // relatively to its current quantity value or just totally replace the value
            if (is_array($value)) {
                if (isset($value['relative'])) {
                    if ((bool)$value['relative']) {
                        $item = $this->updateQuantityRelative($item, $key, $value['value']);
                    } else {
                        $item = $this->updateQuantityNotRelative($item, $key, $value['value']);
                    }
                }
            } else {
                $item = $this->updateQuantityRelative($item, $key, $value);
            }

参数 “为foreach（）提供了无效的参数”

Answer 1

尝试一下：

Cart::update($id, ['quantity' => ['relative' => false,
                                   'value' => $qty
                                 ]
            ]);

更新商品到购物车（package-> darryldecode）Laravel 5.7

1 个答案: