我的代码在本地机器上工作得很完美，我已部署，但删除，添加和更新功能不能正常工作，这就是为什么我得到以下错误“购物车不包含rowId ce5452f389f041ab17e46324cc050c0d。”
这是我的控制器
public function index()
{
$cartItems=Cart::content();
return view('cart.index',compact('cartItems'));
}
public function addItem($id)
{
$product=Product::find($id);
Cart::add($id,$product->name,1,$product->price,['size'=>'medium']);
return back();
}
public function update(Request $request, $id)
{
// dd(Cart::content());
// dd($request->all());
Cart::update($id,['qty'=>$request->qty,"options"=>['size'=>$request->size]]);
return back();
}
public function destroy($id)
{
Cart::remove($id);
return back();
}
我的“模特”请耐心等待我，我只是寻求理解，如果我似乎是某种缓慢的
namespace Gloudemans\Shoppingcart;
use Closure;
use Illuminate\Support\Collection;
use Illuminate\Session\SessionManager;
use Illuminate\Database\DatabaseManager;
use Illuminate\Contracts\Events\Dispatcher;
use Gloudemans\Shoppingcart\Contracts\Buyable;
use Gloudemans\Shoppingcart\Exceptions\UnknownModelException;
use Gloudemans\Shoppingcart\Exceptions\InvalidRowIDException;
use Gloudemans\Shoppingcart\Exceptions\CartAlreadyStoredException;
class Cart
{
const DEFAULT_INSTANCE = 'default';
/**
* Instance of the session manager.
*
* @var \Illuminate\Session\SessionManager
*/
private $session;
/**
* Instance of the event dispatcher.
*
* @var \Illuminate\Contracts\Events\Dispatcher
*/
private $events;
/**
* Holds the current cart instance.
*
* @var string
*/
private $instance;
/**
* Cart constructor.
*
* @param \Illuminate\Session\SessionManager $session
* @param \Illuminate\Contracts\Events\Dispatcher $events
*/
public function __construct(SessionManager $session, Dispatcher $events)
{
$this->session = $session;
$this->events = $events;
$this->instance(self::DEFAULT_INSTANCE);
}
/**
* Set the current cart instance.
*
* @param string|null $instance
* @return \Gloudemans\Shoppingcart\Cart
*/
public function instance($instance = null)
{
$instance = $instance ?: self::DEFAULT_INSTANCE;
$this->instance = sprintf('%s.%s', 'cart', $instance);
return $this;
}
/**
* Get the current cart instance.
*
* @return string
*/
public function currentInstance()
{
return str_replace('cart.', '', $this->instance);
}
/**
* Add an item to the cart.
*
* @param mixed $id
* @param mixed $name
* @param int|float $qty
* @param float $price
* @param array $options
* @return \Gloudemans\Shoppingcart\CartItem
*/
public function add($id, $name = null, $qty = null, $price = null, array $options = [])
{
if ($this->isMulti($id)) {
return array_map(function ($item) {
return $this->add($item);
}, $id);
}
$cartItem = $this->createCartItem($id, $name, $qty, $price, $options);
$content = $this->getContent();
if ($content->has($cartItem->rowId)) {
$cartItem->qty += $content->get($cartItem->rowId)->qty;
}
$content->put($cartItem->rowId, $cartItem);
$this->events->fire('cart.added', $cartItem);
$this->session->put($this->instance, $content);
return $cartItem;
}
/**
* Update the cart item with the given rowId.
*
* @param string $rowId
* @param mixed $qty
* @return \Gloudemans\Shoppingcart\CartItem
*/
public function update($rowId, $qty)
{
$cartItem = $this->get($rowId);
if ($qty instanceof Buyable) {
$cartItem->updateFromBuyable($qty);
} elseif (is_array($qty)) {
$cartItem->updateFromArray($qty);
} else {
$cartItem->qty = $qty;
}
$content = $this->getContent();
if ($rowId !== $cartItem->rowId) {
$content->pull($rowId);
if ($content->has($cartItem->rowId)) {
$existingCartItem = $this->get($cartItem->rowId);
$cartItem->setQuantity($existingCartItem->qty + $cartItem->qty);
}
}
if ($cartItem->qty <= 0) {
$this->remove($cartItem->rowId);
return;
} else {
$content->put($cartItem->rowId, $cartItem);
}
$this->events->fire('cart.updated', $cartItem);
$this->session->put($this->instance, $content);
return $cartItem;
}
/**
* Remove the cart item with the given rowId from the cart.
*
* @param string $rowId
* @return void
*/
public function remove($rowId)
{
$cartItem = $this->get($rowId);
$content = $this->getContent();
$content->pull($cartItem->rowId);
$this->events->fire('cart.removed', $cartItem);
$this->session->put($this->instance, $content);
}
/**
* Get a cart item from the cart by its rowId.
*
* @param string $rowId
* @return \Gloudemans\Shoppingcart\CartItem
*/
public function get($rowId)
{
$content = $this->getContent();
if ( ! $content->has($rowId))
throw new InvalidRowIDException("The cart does not contain rowId {$rowId}.");
return $content->get($rowId);
}
/**
* Destroy the current cart instance.
*
* @return void
*/
public function destroy()
{
$this->session->remove($this->instance);
}
/**
* Get the content of the cart.
*
* @return \Illuminate\Support\Collection
*/
public function content()
{
if (is_null($this->session->get($this->instance))) {
return new Collection([]);
}
return $this->session->get($this->instance);
}
/**
* Get the number of items in the cart.
*
* @return int|float
*/
public function count()
{
$content = $this->getContent();
return $content->sum('qty');
}
/**
* Get the total price of the items in the cart.
*
* @param int $decimals
* @param string $decimalPoint
* @param string $thousandSeperator
* @return string
*/
public function total($decimals = null, $decimalPoint = null, $thousandSeperator = null)
{
$content = $this->getContent();
$total = $content->reduce(function ($total, CartItem $cartItem) {
return $total + ($cartItem->qty * $cartItem->priceTax);
}, 0);
return $this->numberFormat($total, $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Get the total tax of the items in the cart.
*
* @param int $decimals
* @param string $decimalPoint
* @param string $thousandSeperator
* @return float
*/
public function tax($decimals = null, $decimalPoint = null, $thousandSeperator = null)
{
$content = $this->getContent();
$tax = $content->reduce(function ($tax, CartItem $cartItem) {
return $tax + ($cartItem->qty * $cartItem->tax);
}, 0);
return $this->numberFormat($tax, $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Get the subtotal (total - tax) of the items in the cart.
*
* @param int $decimals
* @param string $decimalPoint
* @param string $thousandSeperator
* @return float
*/
public function subtotal($decimals = null, $decimalPoint = null, $thousandSeperator = null)
{
$content = $this->getContent();
$subTotal = $content->reduce(function ($subTotal, CartItem $cartItem) {
return $subTotal + ($cartItem->qty * $cartItem->price);
}, 0);
return $this->numberFormat($subTotal, $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Search the cart content for a cart item matching the given search closure.
*
* @param \Closure $search
* @return \Illuminate\Support\Collection
*/
public function search(Closure $search)
{
$content = $this->getContent();
return $content->filter($search);
}
/**
* Associate the cart item with the given rowId with the given model.
*
* @param string $rowId
* @param mixed $model
* @return void
*/
public function associate($rowId, $model)
{
if(is_string($model) && ! class_exists($model)) {
throw new UnknownModelException("The supplied model {$model} does not exist.");
}
$cartItem = $this->get($rowId);
$cartItem->associate($model);
$content = $this->getContent();
$content->put($cartItem->rowId, $cartItem);
$this->session->put($this->instance, $content);
}
/**
* Set the tax rate for the cart item with the given rowId.
*
* @param string $rowId
* @param int|float $taxRate
* @return void
*/
public function setTax($rowId, $taxRate)
{
$cartItem = $this->get($rowId);
$cartItem->setTaxRate($taxRate);
$content = $this->getContent();
$content->put($cartItem->rowId, $cartItem);
$this->session->put($this->instance, $content);
}
/**
* Store an the current instance of the cart.
*
* @param mixed $identifier
* @return void
*/
public function store($identifier)
{
$content = $this->getContent();
if ($this->storedCartWithIdentifierExists($identifier)) {
throw new CartAlreadyStoredException("A cart with identifier {$identifier} was already stored.");
}
$this->getConnection()->table($this->getTableName())->insert([
'identifier' => $identifier,
'instance' => $this->currentInstance(),
'content' => serialize($content)
]);
$this->events->fire('cart.stored');
}
/**
* Restore the cart with the given identifier.
*
* @param mixed $identifier
* @return void
*/
public function restore($identifier)
{
if( ! $this->storedCartWithIdentifierExists($identifier)) {
return;
}
$stored = $this->getConnection()->table($this->getTableName())
->where('identifier', $identifier)->first();
$storedContent = unserialize($stored->content);
$currentInstance = $this->currentInstance();
$this->instance($stored->instance);
$content = $this->getContent();
foreach ($storedContent as $cartItem) {
$content->put($cartItem->rowId, $cartItem);
}
$this->events->fire('cart.restored');
$this->session->put($this->instance, $content);
$this->instance($currentInstance);
$this->getConnection()->table($this->getTableName())
->where('identifier', $identifier)->delete();
}
/**
* Magic method to make accessing the total, tax and subtotal properties possible.
*
* @param string $attribute
* @return float|null
*/
public function __get($attribute)
{
if($attribute === 'total') {
return $this->total();
}
if($attribute === 'tax') {
return $this->tax();
}
if($attribute === 'subtotal') {
return $this->subtotal();
}
return null;
}
/**
* Get the carts content, if there is no cart content set yet, return a new empty Collection
*
* @return \Illuminate\Support\Collection
*/
protected function getContent()
{
$content = $this->session->has($this->instance)
? $this->session->get($this->instance)
: new Collection;
return $content;
}
/**
* Create a new CartItem from the supplied attributes.
*
* @param mixed $id
* @param mixed $name
* @param int|float $qty
* @param float $price
* @param array $options
* @return \Gloudemans\Shoppingcart\CartItem
*/
private function createCartItem($id, $name, $qty, $price, array $options)
{
if ($id instanceof Buyable) {
$cartItem = CartItem::fromBuyable($id, $qty ?: []);
$cartItem->setQuantity($name ?: 1);
$cartItem->associate($id);
} elseif (is_array($id)) {
$cartItem = CartItem::fromArray($id);
$cartItem->setQuantity($id['qty']);
} else {
$cartItem = CartItem::fromAttributes($id, $name, $price, $options);
$cartItem->setQuantity($qty);
}
$cartItem->setTaxRate(config('cart.tax'));
return $cartItem;
}
/**
* Check if the item is a multidimensional array or an array of Buyables.
*
* @param mixed $item
* @return bool
*/
private function isMulti($item)
{
if ( ! is_array($item)) return false;
return is_array(head($item)) || head($item) instanceof Buyable;
}
/**
* @param $identifier
* @return bool
*/
private function storedCartWithIdentifierExists($identifier)
{
return $this->getConnection()->table($this->getTableName())->where('identifier', $identifier)->exists();
}
/**
* Get the database connection.
*
* @return \Illuminate\Database\Connection
*/
private function getConnection()
{
$connectionName = $this->getConnectionName();
return app(DatabaseManager::class)->connection($connectionName);
}
/**
* Get the database table name.
*
* @return string
*/
private function getTableName()
{
return config('cart.database.table', 'shoppingcart');
}
/**
* Get the database connection name.
*
* @return string
*/
private function getConnectionName()
{
$connection = config('cart.database.connection');
return is_null($connection) ? config('database.default') : $connection;
}
/**
* Get the Formated number
*
* @param $value
* @param $decimals
* @param $decimalPoint
* @param $thousandSeperator
* @return string
*/
private function numberFormat($value, $decimals, $decimalPoint, $thousandSeperator)
{
if(is_null($decimals)){
$decimals = is_null(config('cart.format.decimals')) ? 2 : config('cart.format.decimals');
}
if(is_null($decimalPoint)){
$decimalPoint = is_null(config('cart.format.decimal_point')) ? '.' : config('cart.format.decimal_point');
}
if(is_null($thousandSeperator)){
$thousandSeperator = is_null(config('cart.format.thousand_seperator')) ? ',' : config('cart.format.thousand_seperator');
}
return number_format($value, $decimals, $decimalPoint, $thousandSeperator);
}
}
我的“视图”
@foreach($cartItems as $cartItem)
<tr>
<td style="border-style: solid">{{$cartItem->name}}</td>
<td style="border-style: solid">{{$cartItem->price}}</td>
<td style="border-style: solid">
{!! Form::open(['route' => ['cart.update',$cartItem->rowId], 'method' => 'PUT']) !!}
<input name="qty" type="text" value="{{$cartItem->qty}}">
</td>
<td style="border-style: solid">
<input style="float: left" type="submit" class="btn btn-success" value="Ok">
{!! Form::close() !!}
</td>
<td style="border-style: solid">
<form action="{{route('cart.destroy',$cartItem->rowId)}}" method="POST" >
{{csrf_field()}}
{{method_field('DELETE')}}
<input class="btn btn-danger" type="submit" value="Delete">
</form>
</td>
</tr>
@endforeach
我的检查员显示了rowID，我可以理解，当我添加项目时，购物车会生成rowID，但是这个rowID的位置是不同的。
<tr>
<td style="border-style: solid">ASGHJSDFGHJDF</td>
<td style="border-style: solid">56</td>
<td style="border-style: solid">
<form method="POST" action="http://rorisangmaimane.co.za/cart/ce5452f389f041ab17e46324cc050c0d" accept-charset="UTF-8"><input name="_method" type="hidden" value="PUT"><input name="_token" type="hidden" value="iXJ3ncGwro7lVA07Mph4rbZloVF1UTQ0m8mlmpK6">
<input name="qty" type="text" value="2">
</td>
<td style="border-style: solid">
<input style="float: left" type="submit" class="btn btn-success" value="Ok">
</form>
</td>
<td style="border-style: solid">
<form action="http://rorisangmaimane.co.za/cart/ce5452f389f041ab17e46324cc050c0d" method="POST" >
<input type="hidden" name="_token" value="iXJ3ncGwro7lVA07Mph4rbZloVF1UTQ0m8mlmpK6">
<input type="hidden" name="_method" value="DELETE">
<input class="btn btn-danger" type="submit" value="Delete">
</form>
</td>
</tr>
答案 0 :(得分：0)
我也面临同样的问题。但是，当用户同时单击两次更新/删除按钮时，会发生我的问题。
我通过以下方法解决了这个问题-
首先检查rowId是否可用。然后执行动作-
$cart = Cart::content()->where('rowId',$id);
if($cart->isNotEmpty()){
Cart::remove($id);
}
在更新的功能中也是如此。