1. Package Installation and Configuration

Install Shopping Cart Package

Run the following Composer command to install the required shopping cart package:

composer require surfsidemedia/shoppingcart

Publish Configuration

Publish the package'sconfiguration file:

php artisan vendor:publish --provider="SurfsidemediaShoppingcartShoppingcartServiceProvider" --tag="config"

2. Cart Controller and Route Setup

Create Cart Controller

Generate a new controller for handling cart operations:

Php artisan make:controller CartController

Index Function (`CartController.php`)

In `CartController.php`, include the `Cart` facade and create the `index` function to retrieve the cart contents and pass them to the view:

use Cart;
public function index()
{
    $cartItems = Cart::instance("cart")->content();
    return view("cart",compact("cartItems"));
}

Define Route for Cart Page (`web.php`)

Create the GET route for accessing the shopping cart view:

Route::get("/cart",[CartController::class,"index"])->name("cart.index");

Create Cart View

Create the view file at `resources/views/cart.blade.php`.

3. Implement Add to Cart Logic

Store Function (`CartController.php`)

Create the `store` function to handle adding a product to the cart using the data passed from the product form:

public function store(Request $request)
{
    Cart::instance("cart")->add([
        "id" => $request->id,
        "name" => $request->name,
        "qty" => $request->quantity,
        "price" => $request->price,
        "weight" => 0, // Required by package
    ])->associate("AppModelsProduct"); // Associate with the Product model
    return redirect()->back(); // Redirect back to the previous page
}

Define Route for Adding to Cart (`web.php`)

Create the POST route for submitting the add-to-cart form:

Route::post("/cart/store",[CartController::class,"store"])->name("cart.store");

Product Details Page Form Update (`details.blade.php`)

Update the "Add To Cart" button on the product details page to use a form that submits the product information to the store route:

<div class="product-details-cart-wrap">
    <div class="single-product-cart-button">
        @if($product->stock_status == "instock")
            <form method="POST" action="{{route("cart.store")}}">
                @csrf
                <div class="product-quantity mr-30">
                    <input type="number" name="quantity" min="1" max="100" value="1">
                </div>
                <div class="add-to-cart">
                    <input type="hidden" name="id" value="{{ $product->id }}" />
                    <input type="hidden" name="name" value="{{ $product->name }}" />
                    <input type="hidden" name="quantity" value="1" />
                    <input type="hidden" name="price" value="{{ $product->sale_price == "" ? $product->regular_price : $product->sale_price }}" />
                    <button type="submit" class="btn btn-dark btn-hover-primary">Add To Cart</button>
                </div>
            </form>
        @endif
    </div>
</div>

4. Display Cart Item Count in Layout

In the main layout file (e.g., `base.blade.php` or `app.blade.php`), update the cart icon to show the number of items in the cart using the `Cart` facade:

<div class="dropdown">
    <a class="action" href="{{route("cart.index")}}">
        <i class="pe-7s-shopbag"></i>
        @if(Cart::instance("cart")->content()->count()>0)
        <span class="number">{{Cart::instance("cart")->content()->count()}}</span>
        @endif
    </a>
</div>