core/src/Shipping/Models/Shipment.php

<?php

namespace Modules\Core\Shipping\Models;

use Illuminate\Database\Eloquent\Casts\AsArrayObject;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Lunar\Models\Order;

class Shipment extends Model
{
    protected $guarded = [];

    protected $casts = [
        'meta' => AsArrayObject::class,
        'label_printed_at' => 'datetime',
        'cancelled_at' => 'datetime',
    ];

    public function order(): BelongsTo
    {
        return $this->belongsTo(Order::class);
    }

    public function manifest(): BelongsTo
    {
        return $this->belongsTo(Manifest::class);
    }

    public function shipmentInfo(): HasMany
    {
        return $this->hasMany(ShipmentInfo::class);
    }

    public function latestShipmentInfo(): ?ShipmentInfo
    {
        return $this->shipmentInfo()->latest('occurred_at')->first();
    }
}