修改半成品和成品新增时候搜索下拉框显示问题，新增负责人和生产人历史记录功能

inventory-backend/app/services/inbound/semi_service.py

@@ -7,7 +7,6 @@ from sqlalchemy import or_, func, text, and_
 import traceback
 import json
 
-
 class SemiInboundService:
 
     # ============================================================
@@ -36,10 +35,10 @@ class SemiInboundService:
                 raise ValueError(f"该物料已存在批号【{batch_number}】，请勿重复建单，建议在原批次上追加库存。")
 
     # ============================================================
-    # 1. 基础物料搜索
+    # 1. 基础物料搜索 (已修改支持分页)
     # ============================================================
     @staticmethod
-    def search_base_material(keyword):
+    def search_base_material(keyword, page=1, limit=50):
         try:
             query = MaterialBase.query.filter(MaterialBase.is_enabled == True)
             if keyword:
@@ -51,9 +50,10 @@ class SemiInboundService:
                         MaterialBase.company_name.ilike(kw)  # [新增] 支持搜公司
                     )
                 )
-            query = query.order_by(MaterialBase.id.desc()).limit(20)
+            query = query.order_by(MaterialBase.id.desc())
+            pagination = query.paginate(page=page, per_page=limit, error_out=False)
             results = []
-            for item in query.all():
+            for item in pagination.items:
                 results.append({
                     'id': item.id,
                     'company_name': item.company_name,  # [新增]
@@ -64,10 +64,15 @@ class SemiInboundService:
                     'type': item.material_type,
                     'status': '启用'
                 })
-            return results
+            return {
+                "items": results,
+                "total": pagination.total,
+                "page": page,
+                "has_next": pagination.has_next
+            }
         except Exception as e:
             traceback.print_exc()
-            return []
+            return {"items": [], "total": 0, "page": 1, "has_next": False}
 
     # ============================================================
     # 1.5 BOM 搜索逻辑
@@ -479,4 +484,21 @@ class SemiInboundService:
         except Exception:
             import traceback
             traceback.print_exc()
-            return {"categories": [], "types": [], "companies": []}
+            return {"categories": [], "types": [], "companies": []}
+
+    # ============================================================
+    # 8. 获取历史生产负责人 (新增)
+    # ============================================================
+    @staticmethod
+    def get_history_managers(base_id):
+        from app.models.inbound.semi import StockSemi
+        try:
+            records = db.session.query(StockSemi.production_manager).filter(
+                StockSemi.base_id == base_id,
+                StockSemi.production_manager.isnot(None),
+                StockSemi.production_manager != ''
+            ).distinct().all()
+            return [r[0] for r in records if r[0]]
+        except Exception:
+            traceback.print_exc()
+            return []