baoshi-was/app/WorkOrderCommodities.php

<?php

namespace App;

use App\Traits\ModelTimeFormat;
use Illuminate\Database\Eloquent\Model;

use App\Traits\ModelLogChanging;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class WorkOrderCommodities extends Model
{
    use ModelLogChanging;
    use ModelTimeFormat;

    //
    protected $fillable = [
        'work_order_id',
        'commodity_id',
        'sku',
        'amount',
    ];

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

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