sam-api/app/Models/Production/WorkOrderItem.php

<?php

namespace App\Models\Production;

use App\Models\Items\Item;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

/**
 * 작업지시 품목 모델
 */
class WorkOrderItem extends Model
{
    protected $table = 'work_order_items';

    protected $fillable = [
        'work_order_id',
        'item_id',
        'item_name',
        'specification',
        'quantity',
        'unit',
        'sort_order',
    ];

    protected $casts = [
        'quantity' => 'decimal:2',
        'sort_order' => 'integer',
    ];

    // ──────────────────────────────────────────────────────────────
    // 관계
    // ──────────────────────────────────────────────────────────────

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

    /**
     * 품목
     */
    public function item(): BelongsTo
    {
        return $this->belongsTo(Item::class);
    }

    // ──────────────────────────────────────────────────────────────
    // 스코프
    // ──────────────────────────────────────────────────────────────

    /**
     * 정렬 순서
     */
    public function scopeOrdered($query)
    {
        return $query->orderBy('sort_order');
    }
}