Laravel 8 update product in cart if exists - php

Question

I'm using a Laravel 8 with darryldecode/laravelshoppingcart Cart Package. I'm struggling a bit with updating product quantity if it exists in users cart.
For example: If cart is empty, while adding a product and then clicking mutliple times on "Add To Cart" it adds only one product and then updates quantity to its maximum. But when I'm adding a second product, and then adding again product 1 it adds another product to the cart. It definitely should not add another product but it has to be restricted to maximum quantity of first product.
My cart store method:
public function store(CartStoreRequest $request) {
$validated = $request->validated();
$product = Product::findOrFail($validated['product_id']);
$rowId = uniqid();
$userID = $validated['user_id'];
// get current user cart
$currentCart = \Cart::session($userID);
if(!empty($currentCart->getContent()->toArray())) {
foreach($currentCart->getContent() as $item) {
$productID = $item->associatedModel->id;
if($productID === $product->id) {
$currentCart->update($item->id, [
'quantity' => [
'relative' => false,
'value' => $product->minStock($item->quantity + $validated['quantity']),
]
]);
} else {
$currentCart->add(array(
'id' => $rowId,
'name' => $product->name,
'price' => $product->price->amount(),
'quantity' => $validated['quantity'],
'associatedModel' => $product,
'attributes' => array(
'first_image' => $product->firstImage,
'formatted_price' => $product->formattedPrice,
'product_stock' => $product->stockCount()
)
));
}
}
} else {
$currentCart->add(array(
'id' => $rowId,
'name' => $product->name,
'price' => $product->price->amount(),
'quantity' => $validated['quantity'],
'associatedModel' => $product,
'attributes' => array(
'first_image' => $product->firstImage,
'formatted_price' => $product->formattedPrice,
'product_stock' => $product->stockCount()
)
));
}
return redirect()->back();
}
I hope that's someone had similar problem and knows how to solve this.

Answer 1

Okay, so the solution is to use product ID as $rowId,
$validated = $request->validated();
$product = Product::findOrFail($validated['product_id']);
$rowId = $product->id;
$userID = $validated['user_id'];
$currentCart = \Cart::session($userID);
$currentCart->add(array(
'id' => $rowId,
'name' => $product->name,
'price' => $product->price->amount(),
'quantity' => $product->minStock($validated['quantity']),
'associatedModel' => $product,
'attributes' => array(
'first_image' => $product->firstImage,
'formatted_price' => $product->formattedPrice,
'product_stock' => $product->stockCount()
)
));
$currentCartContents = $currentCart->get($rowId);
$quantity = $product->minStock($currentCartContents->quantity);
if($currentCartContents->quantity !== $quantity) {
$currentCart->update($rowId, [
'quantity' => [
'relative' => false,
'value' => $quantity,
]
]);
}
return redirect()->back();