fix: added delivery_id and delivery_isnull query param to shipment list api

api_v1/views/shipment/views.py

@@ -121,6 +121,8 @@ class ShipmentListCreateView(ListModelMixin, GenericAPIView):
         支持过滤参数（可选）：
         - customer: 客户ID
         - status: 状态（1=草稿, 2=已发布, 3=已取消, 4=已驳回, 5=已审核）
+        - delivery_id: 送货单ID（仅当传入具体ID时过滤；null/空值不触发过滤）
+        - delivery_isnull: 是否仅查询未绑定/已绑定送货单的出货单（true/false）
         - external_id: 外部订单号（精确匹配）
         - shipment_date_from: 出货日期起始（YYYY-MM-DD）
         - shipment_date_to: 出货日期结束（YYYY-MM-DD，包含整天）
@@ -151,6 +153,20 @@ class ShipmentListCreateView(ListModelMixin, GenericAPIView):
         if status_val:
             qs = qs.filter(status=status_val)
 
+        delivery_id = self.request.query_params.get("delivery_id")
+        if delivery_id is not None:
+            normalized_delivery_id = delivery_id.strip()
+            if normalized_delivery_id and normalized_delivery_id.lower() not in {"null", "none"}:
+                qs = qs.filter(delivery_id=normalized_delivery_id)
+
+        delivery_isnull = self.request.query_params.get("delivery_isnull")
+        if delivery_isnull is not None:
+            normalized_delivery_isnull = delivery_isnull.strip().lower()
+            if normalized_delivery_isnull in {"1", "true", "yes"}:
+                qs = qs.filter(delivery_id__isnull=True)
+            elif normalized_delivery_isnull in {"0", "false", "no"}:
+                qs = qs.filter(delivery_id__isnull=False)
+
         external_id = self.request.query_params.get("external_id")
         if external_id:
             qs = qs.filter(external_id=external_id)
@@ -1009,7 +1025,7 @@ class SalesItemDetailView(GenericAPIView):
         emp = getattr(user, "employee", None)
         merchant = getattr(emp, "merchant", None) if emp else None
         if not merchant:
-            return SalesItem.objects.none()
+            return qs.none()
         return qs.filter(merchant=merchant)
 
     def get(self, request, pk: int):
@@ -1116,7 +1132,7 @@ class SalesItemRebuildView(GenericAPIView):
         emp = getattr(user, "employee", None)
         merchant = getattr(emp, "merchant", None) if emp else None
         if not merchant:
-            return SalesItem.objects.none()
+            return qs.none()
         return qs.filter(merchant=merchant)
 
     def post(self, request, pk: int):