feat(bom): BOM列表按物料类别分组展示，支持折叠展开与数量统计

inventory-backend/app/services/bom_service.py

@@ -3,6 +3,7 @@ from app.models.bom import BomTable
 from app.models.base import MaterialBase
 from app.models.inbound.buy import StockBuy
 from sqlalchemy import func, distinct, or_, case
+from collections import defaultdict
 import uuid
 from datetime import datetime
 
@@ -64,6 +65,7 @@ class BomService:
                 BomTable.parent_id,
                 MaterialBase.name.label('parent_name'),
                 MaterialBase.spec_model.label('parent_spec'),
+                MaterialBase.category.label('parent_category'),
                 BomTable.is_enabled,
                 func.count(BomTable.child_id).label('child_count')
             ).join(
@@ -72,7 +74,7 @@ class BomService:
                 BomTable.bom_no == bom_no,
                 BomTable.version == version
             ).group_by(
-                BomTable.parent_id, MaterialBase.name, MaterialBase.spec_model, BomTable.is_enabled
+                BomTable.parent_id, MaterialBase.name, MaterialBase.spec_model, MaterialBase.category, BomTable.is_enabled
             ).first()
 
             if summary:
@@ -82,12 +84,39 @@ class BomService:
                     'parent_id': summary.parent_id,
                     'parent_name': summary.parent_name,
                     'parent_spec': summary.parent_spec or '',
+                    'parent_category': summary.parent_category or '',
                     'is_enabled': summary.is_enabled,
                     'child_count': summary.child_count
                 })
 
         results.sort(key=lambda x: (x['bom_no'], x['version']), reverse=True)
-        return results
+
+        # 如果有关键词，过滤结果（keyword 匹配逻辑保持不变）
+        if keyword:
+            kw = f'%{keyword}%'
+            results = [
+                r for r in results
+                if kw in (r.get('parent_name') or '')
+                   or kw in (r.get('parent_spec') or '')
+                   or kw in (r.get('bom_no') or '')
+                   or kw in (r.get('parent_category') or '')
+            ]
+
+        # 按 parent_category 分组
+        grouped = defaultdict(list)
+        for item in results:
+            cat = item.get('parent_category') or '未分类'
+            grouped[cat].append(item)
+
+        grouped_list = []
+        for cat, items in sorted(grouped.items(), key=lambda x: x[0]):
+            grouped_list.append({
+                'category': cat,
+                'count': len(items),
+                'items': items
+            })
+
+        return grouped_list
 
     @staticmethod
     def get_bom_detail(bom_no, version=None):