sam-api/app/Models/Products/Product.php

<?php

namespace App\Models\Products;

use App\Models\Commons\Category;
use App\Models\Commons\File;
use App\Models\Commons\Tag;
use App\Traits\BelongsToTenant;
use App\Traits\ModelTrait;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Product extends Model
{
    use SoftDeletes, BelongsToTenant, ModelTrait;

    protected $fillable = [
        'tenant_id','code','name','category_id',
        'product_type',                 // 라벨/분류용
        'attributes','description','is_active',
        'is_sellable','is_purchasable','is_producible',
        'created_by','updated_by'
    ];

    protected $casts = [
        'attributes'     => 'array',
        'is_active'      => 'boolean',
        'is_sellable'    => 'boolean',
        'is_purchasable' => 'boolean',
        'is_producible'  => 'boolean',
    ];

    // 분류
    public function category() { return $this->belongsTo(Category::class, 'category_id'); }

    // BOM (자기참조) — 라인 모델 경유
    public function componentLines()  { return $this->hasMany(ProductComponent::class, 'parent_product_id'); } // 라인들
    public function parentLines()     { return $this->hasMany(ProductComponent::class, 'child_product_id'); }  // 나를 쓰는 상위 라인들

    // 편의: 직접 children/parents 제품에 접근
    public function children()
    {
        return $this->belongsToMany(
            self::class, 'product_components', 'parent_product_id', 'child_product_id'
        )->withPivot(['quantity','sort_order','is_default'])
            ->withTimestamps();
    }

    public function parents()
    {
        return $this->belongsToMany(
            self::class, 'product_components', 'child_product_id', 'parent_product_id'
        )->withPivot(['quantity','sort_order','is_default'])
            ->withTimestamps();
    }

    // 파일 / 태그 (폴리모픽)
    public function files() { return $this->morphMany(File::class, 'fileable'); }
    public function tags()  { return $this->morphToMany(Tag::class, 'taggable'); }

    // 스코프
    public function scopeType($q, string $type) { return $q->where('product_type', $type); }
    public function scopeSellable($q)    { return $q->where('is_sellable', 1); }
    public function scopePurchasable($q) { return $q->where('is_purchasable', 1); }
    public function scopeProducible($q)  { return $q->where('is_producible', 1); }
}