Laravel 集合->push() 无法正常工作

Question

I want to collect product and push to the session cart.

$product= Product::find(1);
$product2= Product::find(2);

session(['cart' => collect($product)]);

session(['cart' => session('cart')->push($product2)])

This is my output with some dummy data.

{
  "0": {
    "id": 2,
    "sku": "SKU914",
    "price": 1.0,
    "special_price": 0.91,
    "weight": 763,
    "barcode": "0434120288572",
    "created_at": "2020-01-31 14:39:53",
    "updated_at": "2020-01-31 14:39:53"
  },
  "id": 1,
  "sku": "SKU579",
  "price": 22.8,
  "special_price": 19.14,
  "weight": 478459,
  "barcode": "1390377688",
  "created_at": "2020-01-31 14:34:59",
  "updated_at": "2020-01-31 14:34:59"
}

The second product ($product2) which I pushed become outside of the array. How should I do to make it like "0": {}, "1": {}

Answer 1

as per your request simply use like this

session(['cart' => collect($product)]);

$card1[] = session('cart');
$card1[] = collect($product1);
session(['cart' => $card1])

$card2[] = session('cart');
$card2[] = collect($product2);
session(['cart' => $card2])

or you can use whereIn()

$products = Product::whereIn("id",[1,2])->get()->toArray();
session(['cart' => $products])

or can use array_merge

session(['cart' => collect($product)]);

$cart = array_merge(session('cart'),collect($product2));
session(['cart' => $cart])

Answer 2

you don't need to merge anything

2 query will be slow so better to run only one query

$Ids = [1,2];
if(true) { // can add any condtion here
   array_push(3); // if you need to push new id
}
$product= Product::whereIn("id",$Ids)->get();
session(['cart' => $product]);

you can apply whereIn() condition

Answer 3

Just place $product in an array.

session(['cart' => collect([$product])]);
session(['cart' => session('cart')->push($product2)]);

Or just push

session(['cart' => session('cart')->push($product)]);
session(['cart' => session('cart')->push($product2)]);