Tela do Carrinho das Lojas Tenancy em https://codeexperts.com.br/curso/laravel-tenancy-1

cart.blade.php

<x-guest-layout>
    <div class="max-w-7xl mx-auto sm:px-6 lg:px-8">
        <h3 class="text-2xl font-extrabold my-8"></h3>
        <hr>
        <h5 class="my-20 text-4xl text-center font-extrabold">Carrinho</h5>
        <hr>

        <div class="w-1/2 block mx-auto mt-10">
            @php $total = 0; @endphp
            @forelse($cart as $item)
                <div class="mb-4 flex justify-between">
                    <h5 class="text-bold text-2xl mb-4">{{$item['name']}}</h5>
                    <p>R$ {{number_format($item['price'], 2, ',', '.')}}</p>
                    <p><a class="font-bold text-red-700" href="{{route('cart.remove',[request('subdomain'), $item['slug']])}}">Remover</a></p>
                    @php $total += $item['price'] @endphp
                </div>
            @empty
                <div class="w-full border border-yellow-600 bg-yellow-100 px-4 py-2 rounded text-yellow-600 font-bold text-xl">Nenhum item encontrado...</div>
            @endforelse

            @if($cart)
                <div class="border-t border-gray-200 flex justify-between pt-10">
                    <h5 class="text-bold text-2xl mb-4">Total</h5>
                    <p>R$ {{number_format($total, 2, ',', '.')}}</p>
                </div>

                <div class="border-t border-gray-200 flex justify-between pt-4 mt-10">
                    <a href="{{route('cart.cancel', request('subdomain'))}}"
                       class="text-xl font-bold px-4 py-2 rounded bg-red-600 text-white shadow hover:bg-red-300 transition ease-in-out delay-150 uppercase">Cancelar</a>

                    <a href="{{route('checkout.checkout', request('subdomain'))}}"
                       class="text-xl font-bold px-4 py-2 rounded bg-green-600 text-white shadow hover:bg-green-300 transition ease-in-out delay-150 uppercase">Concluir</a>
                </div>
            @endif
        </div>
    </div>
</x-guest-layout>

CartController.php

<?php

namespace App\Http\Controllers\Front;

use App\Http\Controllers\Controller;
use App\Models\Store;
use App\Services\CartService;
use Illuminate\Http\Request;

class CartController extends Controller
{
    public function __construct(private CartService $cartService, private Store $store)
    {
    }

    public function index()
    {
        $cart = $this->cartService->all();

        return view('front.cart', compact('cart'));
    }

    public function add($subdomain, $product)
    {
        $store = $this->store->whereSubdomain($subdomain)->first();
        $product = $store->products()->whereSlug($product)->first()->toArray();

        $this->cartService->add($product);

        return redirect()->route('front.store', $subdomain);
    }

    public function remove($subdomain, $product)
    {
        $this->cartService->remove($product);

        return redirect()->route('front.store', $subdomain);
    }

    public function cancel($subdomain)
    {
        $this->cartService->clear();
        return redirect()->route('front.store', $subdomain);
    }
}

web-cart.php

<?php 

Route::prefix('cart')->name('cart.')->group(function(){
    Route::get('/', [\App\Http\Controllers\Front\CartController::class, 'index'])->name('index');
    Route::get('add/{product}', [\App\Http\Controllers\Front\CartController::class, 'add'])->name('add');
    Route::get('remove/{product}', [\App\Http\Controllers\Front\CartController::class, 'remove'])->name('remove');
    Route::get('cancel', [\App\Http\Controllers\Front\CartController::class, 'cancel'])->name('cancel');
});