已修复

已在 django/orders/views.py 里，把商家订单详情页相关接口都改成同时兼容 OrderID 和 dingdan_id（与 sjddxq 一致）：

接口	用途
/dingdan/sjtkshenqing
申请退款（你这次报错的）
/dingdan/sjchexiao
撤销订单
/dingdan/sjjiesuan
结算
/dingdan/sjfksq
罚款申请
/dingdan/zxsjghds
更换打手

orders/views.py

@@ -2360,7 +2360,7 @@ class ShangjiaJiesuanView(APIView):
         # 2. 获取前端参数
         try:
             data = request.data
-            dingdan_id = data.get('OrderID', '').strip()
+            dingdan_id = str(data.get('OrderID') or data.get('dingdan_id') or '').strip()
             pingfen = int(data.get('pingfen', 0))
             liuyan = data.get('liuyan', '').strip()
         except (ValueError, TypeError):
@@ -2553,7 +2553,7 @@ class ShangjiaChexiaoView(APIView):
         # 3. 获取前端参数
         try:
             data = request.data
-            dingdan_id = data.get('OrderID', '').strip()
+            dingdan_id = str(data.get('OrderID') or data.get('dingdan_id') or '').strip()
             chexiao_liyou = data.get('chexiao_liyou', '').strip()
         except Exception:
             return Response({
@@ -2689,7 +2689,7 @@ class ShangjiaTuikuanShenqingView(APIView):
         # 3. 获取前端参数
         try:
             data = request.data
-            dingdan_id = data.get('OrderID', '').strip()
+            dingdan_id = str(data.get('OrderID') or data.get('dingdan_id') or '').strip()
             tuikuan_liyou = data.get('tuikuan_liyou', '').strip()
         except Exception:
             return Response({
@@ -2827,7 +2827,7 @@ class ShangjiaChufaShenqingView(APIView):
         # 3. 获取前端参数
         try:
             data = request.data
-            dingdan_id = data.get('OrderID', '').strip()
+            dingdan_id = str(data.get('OrderID') or data.get('dingdan_id') or '').strip()
             dashou_id = data.get('dashou_id', '').strip()
             chufa_liyou = data.get('chufa_liyou', '').strip()
             chufa_tupian_urls = data.get('chufa_tupian_urls', [])  # 🔴 新增：图片URL数组
@@ -6175,7 +6175,7 @@ class ZxsjghdsView(APIView):
             return Response({'code': 1, 'msg': '用户认证失败'}, status=status.HTTP_401_UNAUTHORIZED)
 
         # ========== 2. 提取订单ID ==========
-        dingdan_id = request.data.get('OrderID', '').strip()
+        dingdan_id = str(request.data.get('OrderID') or request.data.get('dingdan_id') or '').strip()
         if not dingdan_id:
             return Response({'code': 2, 'msg': '订单ID不能为空'}, status=status.HTTP_400_BAD_REQUEST)