A simple example to create Order in Laravel Shopper using Livewire

livewire-checkout.php

<?php

namespace App\Http\Livewire\Checkout;

use App\Actions\PlaceOrder as PlaceOrderAction;
use App\Notifications\PlaceOrder;
use Darryldecode\Cart\Facades\CartFacade;
use Livewire\Component;
use Shopper\Framework\Models\Shop\Order\Order;
use Shopper\Framework\Models\Shop\Order\OrderItem;

class Browse extends Component
{
    /**
     * Component event listeners.
     *
     * @var string[]
     */
    protected $listeners = ['shippingMethodUpdated', 'goToStep', 'mergeState'];

    /**
     * Complete checkout process step.
     *
     * @var int
     */
    public $step = 1;

    /**
     * Place order state.
     *
     * @var array
     */
    public $state = [];

    /**
     * Shipping price.
     *
     * @var int|null
     */
    public $shippingPrice;

    /**
     * Shipping method used.
     *
     * @var string
     */
    public $shippingMethod;

    /**
     * Shipping delivery time.
     *
     * @var string
     */
    public $shippingDelivery;

    /**
     * Total order price.
     *
     * @var int|null
     */
    public $totalPrice;

    /**
     * Determine if order have a shipping method.
     *
     * @var bool
     */
    public $hasShippingMethod = false;

    /**
     * Validation rules.
     *
     * @var string[]
     */
    public $rules = [
        'state.shipping_address_id' => 'required',
        'state.shipping_method_id' => 'required',
        'state.payment_method_id' => 'required',
    ];

    /**
     * Custom validation errors messages.
     *
     * @var string[]
     */
    public $messages = [
        'state.shipping_address_id.required' => "L'adresse de livraison n'a pas été validé, veuillez cliquez de nouveau.",
        'state.shipping_method_id.required' => "Le moyen d livraison n'a pas été choisi.",
        'state.payment_method_id.required' => 'Vous devez choisi un moyen de paiement.',
    ];

    /**
     * Component Mount instance.
     *
     * @return void
     * @throws \Exception
     */
    public function mount()
    {
        $this->totalPrice = CartFacade::session(session()->getId())->getTotal();
    }

    /**
     * Store a new order to storage.
     *
     * @return \Illuminate\Http\RedirectResponse
     * @throws \Exception
     */
    public function store()
    {
        $this->validate();

        $order = Order::query()->create([
            'number' => generate_number(),
            'price_amount' => CartFacade::session(session()->getId())->getSubTotal(),
            'currency' => shopper_currency(),
            'shipping_total' => $this->state['price'],
            'shipping_method' => $this->state['method'],
            'shipping_address_id' => $this->state['shipping_address_id'],
            'payment_method_id' => $this->state['payment_method_id'],
            'user_id' => auth()->id(),
        ]);

        foreach (CartFacade::session(session()->getId())->getContent() as $cart) {
            OrderItem::query()->create([
                'name' => $cart->name,
                'sku' => $cart->associatedModel->sku,
                'quantity' => $cart->quantity,
                'unit_price_amount' => $cart->price,
                'order_id' => $order->id,
                'product_id' => $cart->associatedModel->id,
                'product_type' => config('shopper.system.models.product'),
            ]);
        }

        auth()->user()->notify(new PlaceOrder($order));

        (new PlaceOrderAction($order));

        CartFacade::session(session()->getId())->clear();

        session()->flash('success', __('Votre commande a été passée et sera traitée dans les plus brefs délais. Assurez-vous de noter votre numéro de commande, qui est :number. Vous recevrez sous peu un e-mail avec la confirmation de votre commande.', ['number' => $order->number]));

        $this->redirectRoute('account.orders');
    }

    /**
     * Go to the current step passed as parameter.
     *
     * @param  $step
     * @return void
     */
    public function goToStep($step)
    {
        $this->step = $step;
    }

    /**
     * Merge state of all step.
     *
     * @param  array  $state
     * @return void
     */
    public function mergeState(array $state)
    {
        $this->state = array_merge($this->state, $state);
    }

    /**
     * Updated shipping method and total order price.
     *
     * @param  mixed  $params
     * @throws \Exception
     */
    public function shippingMethodUpdated($params)
    {
        $this->hasShippingMethod = true;
        $this->shippingPrice = $params['price'];
        $this->shippingMethod = $params['method'];
        $this->shippingDelivery = $params['delivery_time'];
        $this->totalPrice = (int) CartFacade::session(session()->getId())->getTotal() + $params['price'];
    }

    /**
     * Render the component.
     *
     * @return \Illuminate\View\View
     * @throws \Exception
     */
    public function render()
    {
        return view('livewire.checkout.browse', [
            'items' => CartFacade::session(session()->getId())->getContent(),
        ]);
    }
}