feat: add material spec to BOM responses and UI

Co-authored-by: aider (openai/DeepSeek-V3.2-Thinking) <aider@aider.chat>

inventory-backend/app/services/bom_service.py

@@ -34,7 +34,8 @@ class BomService:
             subq.c.parent_id,
             subq.c.version,
             subq.c.child_count,
-            MaterialBase.name.label('parent_name')
+            MaterialBase.name.label('parent_name'),
+            MaterialBase.spec_model.label('parent_spec')
         ).join(MaterialBase, subq.c.parent_id == MaterialBase.id)
 
         results = query.all()
@@ -42,6 +43,7 @@ class BomService:
             'bom_no': row.bom_no,
             'parent_id': row.parent_id,
             'parent_name': row.parent_name,
+            'parent_spec': row.parent_spec or '',
             'version': row.version,
             'child_count': row.child_count
         } for row in results]
@@ -54,7 +56,8 @@ class BomService:
         """
         rows = db.session.query(
             BomTable,
-            MaterialBase.name.label('child_name')
+            MaterialBase.name.label('child_name'),
+            MaterialBase.spec_model.label('child_spec')
         ).join(
             MaterialBase, BomTable.child_id == MaterialBase.id
         ).filter(
@@ -66,14 +69,21 @@ class BomService:
 
         first = rows[0]
         parent_id = first.BomTable.parent_id
-        parent_name = db.session.query(MaterialBase.name)\
-            .filter(MaterialBase.id == parent_id).scalar() or ''
+        # 获取父件的名称和规格
+        parent_material = MaterialBase.query.filter(MaterialBase.id == parent_id).first()
+        if parent_material:
+            parent_name = parent_material.name
+            parent_spec = parent_material.spec_model or ''
+        else:
+            parent_name = ''
+            parent_spec = ''
 
         children = []
-        for bom, child_name in rows:
+        for bom, child_name, child_spec in rows:
             children.append({
                 'child_id': bom.child_id,
                 'child_name': child_name,
+                'child_spec': child_spec or '',
                 'dosage': float(bom.dosage) if bom.dosage else 0.0,
                 'remark': bom.remark or ''
             })
@@ -82,6 +92,7 @@ class BomService:
             'bom_no': bom_no,
             'parent_id': parent_id,
             'parent_name': parent_name,
+            'parent_spec': parent_spec,
             'version': first.BomTable.version,
             'children': children
         }