fix : 카테고리, 제품등록, BOM등록 API (일부 개발 - BOM 추가 작업 필요)

app/Models/Products/ProductComponent.php

@@ -2,29 +2,92 @@
 
 namespace App\Models\Products;
 
-use App\Traits\BelongsToTenant;
-use App\Traits\ModelTrait;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\SoftDeletes;
+use App\Traits\ModelTrait;
+use App\Traits\BelongsToTenant;
 
 class ProductComponent extends Model
 {
-    use SoftDeletes, BelongsToTenant, ModelTrait;
+    use SoftDeletes, ModelTrait, BelongsToTenant;
 
     protected $table = 'product_components';
 
     protected $fillable = [
-        'tenant_id','parent_product_id','child_product_id',
-        'quantity','sort_order','is_default',
-        'created_by','updated_by'
+        'tenant_id',
+        'parent_product_id',
+        'ref_type',
+        'child_product_id',
+        'material_id',
+        'quantity',
+        'sort_order',
+        'is_default',
+        'created_by',
+        'updated_by',
     ];
 
     protected $casts = [
         'quantity'   => 'decimal:4',
-        'sort_order' => 'integer',
         'is_default' => 'boolean',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+        'deleted_at' => 'datetime',
     ];
 
-    public function parent() { return $this->belongsTo(Product::class, 'parent_product_id'); }
-    public function child()  { return $this->belongsTo(Product::class, 'child_product_id'); }
+    protected $hidden = [
+        'deleted_at',
+    ];
+
+
+    /**
+     * 상위 제품 (모델/제품)
+     */
+    public function parentProduct()
+    {
+        return $this->belongsTo(Product::class, 'parent_product_id');
+    }
+
+    /**
+     * 하위 제품 (ref_type = PRODUCT일 때만 의미 있음)
+     */
+    public function childProduct()
+    {
+        return $this->belongsTo(Product::class, 'child_product_id');
+    }
+
+    /**
+     * 하위 자재 (ref_type = MATERIAL일 때만 의미 있음)
+     */
+    public function material()
+    {
+        return $this->belongsTo(\App\Models\Materials\Material::class, 'material_id');
+    }
+
+    // ---------------------------------------------------
+    // 🔎 Query Scopes
+    // ---------------------------------------------------
+
+    /**
+     * 제품 BOM 아이템만
+     */
+    public function scopeProducts($query)
+    {
+        return $query->where('ref_type', 'PRODUCT');
+    }
+
+    /**
+     * 자재 BOM 아이템만
+     */
+    public function scopeMaterials($query)
+    {
+        return $query->where('ref_type', 'MATERIAL');
+    }
+
+    /**
+     * 특정 상위 제품의 BOM
+     */
+    public function scopeForParent($query, int $parentProductId)
+    {
+        return $query->where('parent_product_id', $parentProductId);
+    }
 }