Problem with passing id via GET in Laravel - laravel

Question

Laravel framework 6.9 + XAMP
I need advise from someone with experience in Laravel as I have some strange issue I cannot explain.
Blade template has a button that should add an item to the cart via product id:
<div class="buy d-flex justify-content-between align-items-center">
<div class="price text-success"><h5 class="mt-4">$ {{$product->price}}</h5></div>
<i class="fas fa-shopping-cart"></i> Add to Cart
</div>
However nothing happens when the button is clicked. No product id is passed, just #.
This is web.php route that I call:
Route::get('add-to-cart/{id}', [
'uses' => 'ProductController#getAddToCart',
'as' => 'product.addToCart'
]);
Also tried:
//Route::get('add-to-cart/{id}', 'ProductController#getAddToCart')->name('product.addToCart');
Which also doesn't work.
This is Cart model:
<?php
namespace App;
class Cart
{
public $items = null;
public $totalQty = 0;
public $totalPrice = 0;
public function __construct($oldCart)
{
if ($oldCart) {
$this->items = $oldCart->items;
$this->totalQty = $oldCart->totalQty;
$this->totalPrice = $oldCart->totalPrice;
}
}
public function add($item, $id) {
$storedItem = ['qty' => 0, 'price' => $item->price, 'item'=> $item];
if ($this->items) {
if (array_key_exists($id, $this->items)) {
$storedItem = $this->items[$id];
}
}
$storedItem['qty']++;
$storedItem['price'] = $item->price * $storedItem['qty'];
$this->items[$id] = $storedItem;
$this->totalQty++;
$this->totalPrice += $item->price;
}
}
This is Product controller:
namespace App\Http\Controllers;
use App\Product;
use Illuminate\Http\Request;
use App\Cart;
use Session;
class ProductController extends Controller
{
public function index()
{
$products = Product::all();
return view('shop.index', ['products' => $products]);
}
public function getAddToCart(Request $request, $id) {
$product = Product::find($id);
$oldCart = Session::has('cart') ? Session::get('cart') : null;
$cart = new Cart($oldCart);
$cart->add($product, $product->id);
$request->session()->put('cart', $cart);
//dd($request->session()->get('cart'));
return redirect()->route('index');
}
}
If I just pass in URL: /add-to-cart/{prod id} and Enter, it works - I get to see dd() of the 'cart' with the product details, so the route works. Only the button doesn't!
Drives me nuts. What am I doing wrong? Is there some 'feature' in Laravel I don't know about?
dd($product)
App\Product {#279 ▼
#fillable: array:3 [▼
0 => "title"
1 => "description"
2 => "price"
]
#connection: "mysql"
#table: "products"
#primaryKey: "id"
#keyType: "int"
+incrementing: true
#with: []
#withCount: []
#perPage: 15
+exists: true
+wasRecentlyCreated: false
#attributes: array:7 [▼
"id" => 2
"created_at" => "2019-12-22 18:05:40"
"updated_at" => "2019-12-22 18:05:40"
"imagePath" => "https://s3.eu-central-1.amazonaws.com/bootstrapbaymisc/blog/24_days_bootstrap/vans.png"
"title" => "Neque quia sit facere."
"description" => "Seven flung down his cheeks, he went on growing, and, as the door opened inwards, and Alice's elbow was pressed hard against it, that attempt proved a failure. ▶"
"price" => 29
]
#original: array:7 [▶]
#changes: []
#casts: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: []
#touches: []
+timestamps: true
#hidden: []
#visible: []
#guarded: array:1 [▶]
}
The cart gets filled with product.

Answer 1

From what I'm seeing it seems that your route is not redirecting correctly. In your controller, the actions is defined as
public function getAddToCart(Request $request, $id)
but in your button you are only passing the id parameter.
Try redefining your method in your controller to
public function getAddToCart($id)
that should do the trick.