OrdersController.php

<?php

namespace App\Http\Controllers;

use App\Purchase;
use Illuminate\Support\Facades\Auth;

class OrdersController extends Controller
{
    // ...

    public function show($id)
    {
        $purchase = Auth::user()->purchases()->with('latestFulfillmentAttempts')->findOrFail($id);

        return view('orders.show', [
            'purchase' => $purchase,
            'fulfillmentAttempts' => $purchase->latestFulfillmentAttempts,
        ]);
    }
}

Purchase.php

<?php

namespace App;

use App\Events\FulfillmentFailed;
use Facades\App\CreditCardGateway;
use Facades\App\WebhookDispatcher;
use Illuminate\Database\Eloquent\Model;
use App\Exceptions\WebhookFailedException;

class Purchase extends Model
{
    // ...

    public function fulfillmentAttempts()
    {
        return $this->hasMany(FulfillmentAttempt::class);
    }

    public function latestFulfillmentAttempts()
    {
        return $this->fulfillmentAttempts()->latest();
    }

    // ...
}