Laravel 在会话中存储数组

2021-12-18 00:00:00 php laravel laravel-5.2

我在会话中存储数组时遇到问题.我正在制作购物车，但它似乎不起作用.

I have been having trouble storing an array in session. I am making a shopping cart and it doesn't seem to work.

public function __construct(){

  $product = array(1,2,3,4);
  Session::push('cart', $product);

}

然后像这样在视图中检索它.

and then retrieve it in the view like this.

{{Session::get('cart')}}

但是我一直收到这样的错误.

However I keep getting an error like this.

htmlentities() expects parameter 1 to be string, array given

有关如何创建可存储一系列商品的购物车的任何线索和建议.

Any clues and advice on how to create a shopping cart that stores an array of items.

推荐答案

如果你需要使用 session 中的数组作为字符串，你需要像这样使用 Collection:

If you need to use the array from session as a string, you need to use Collection like this:

$product = collect([1,2,3,4]);
Session::push('cart', $product);

当您在 html 中使用 {{Session::get('cart');}} 时，这将使它起作用.请注意 Session::push 因为它会在会话中始终附加新产品.您应该使用 Session::put 以确保产品将始终更新.

This will make it work when you will be using {{Session::get('cart');}} in your htmls. Be aware of Session::push because it will append always the new products in sessions. You should be using Session::put to be sure the products will be always updating.

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