对于采购件的内容进行修改，使其填写更加便利加上库位自动加载上一次的逻辑

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

@@ -51,7 +51,8 @@ class BuyInboundService:
                 query = query.filter(
                     or_(
                         MaterialBase.name.ilike(f'%{keyword}%'),
-                        MaterialBase.spec_model.ilike(f'%{keyword}%')
+                        MaterialBase.spec_model.ilike(f'%{keyword}%'),
+                        MaterialBase.pinyin.ilike(f'%{keyword}%')
                     )
                 )
             query = query.order_by(MaterialBase.id.desc()).limit(20)
@@ -336,22 +337,20 @@ class BuyInboundService:
     # ============================================================
     @staticmethod
     def get_history_suppliers(base_id):
-        """返回该物料在 stock_buy 表中关联过的供应商列表"""
+        """返回该物料关联的供应商列表（去重）"""
         try:
-            # 去重查询
             query = db.session.query(StockBuy.supplier_name).filter(
                 StockBuy.base_id == base_id,
                 StockBuy.supplier_name.isnot(None),
                 StockBuy.supplier_name != ''
             ).distinct().order_by(StockBuy.supplier_name)
-
             suppliers = [row[0] for row in query.all()]
             return suppliers
         except Exception:
             return []
 
     # ============================================================
-    # 7. 采购人/邮箱历史查询 (全局，从 stock_buy 获取)
+    # 7. 采购人建议 (全局，基于 stock_buy 表)
     # ============================================================
     @staticmethod
     def get_history_purchasers(keyword):
@@ -371,7 +370,7 @@ class BuyInboundService:
                     StockBuy.buyer_email.ilike(kw)
                 ))
 
-            # 按名字去重，取最新的记录（这里简单做 distinct，具体业务如果一个人有多个邮箱可能需要更复杂逻辑，这里简化为 distinct 组合）
+            # 按名字去重，取最新的记录（这里简单做 distinct）
             results = query.distinct().limit(20).all()
 
             users = []
@@ -401,5 +400,24 @@ class BuyInboundService:
 
             links = [row[0] for row in query.all()]
             return links
+        except Exception:
+            return []
+
+    # ============================================================
+    # 9. [新增] 库位建议 (基于 base_id)
+    # ============================================================
+    @staticmethod
+    def get_history_locations(base_id):
+        """查询该物料的历史存放库位，方便复用"""
+        try:
+            query = db.session.query(StockBuy.warehouse_location).filter(
+                StockBuy.base_id == base_id,
+                StockBuy.warehouse_location.isnot(None),
+                StockBuy.warehouse_location != ''
+            ).distinct().limit(10)
+
+            # 简单去重列表
+            locs = [row[0] for row in query.all()]
+            return locs
         except Exception:
             return []