diff --git a/discount/init.py b/discount/init.py
index 19aa2a2..e069fe3 100644
--- a/discount/init.py
+++ b/discount/init.py
@@ -535,6 +535,52 @@ async def disable_promo_code(request, params_kw):
         return {'status': 'success'}
 
 
+async def generate_promo_qr(request, params_kw):
+    """Generate QR code for a promo code."""
+    env = ServerEnv()
+    dbname = env.get_module_dbname('discount')
+    promo_id = params_kw.get('id', '')
+    
+    if not promo_id:
+        return {'widgettype': 'Message', 'options': {'title': 'Error', 'message': 'Missing promo code id', 'type': 'error'}}
+    
+    from appPublic.qr import gen_qr_withlogo
+    from appPublic.jsonConfig import getConfig
+    from ahserver.filestorage import FileStorage
+    from appPublic.uniqueID import getID as _getID
+    
+    async with DBPools().sqlorContext(dbname) as sor:
+        recs = await sor.R('discount_promo_code', {'id': promo_id})
+        if not recs:
+            return {'widgettype': 'Message', 'options': {'title': 'Error', 'message': f'Promo code {promo_id} not found', 'type': 'error'}}
+    
+    config = getConfig()
+    qr_url = env.entire_url('./promote') + f'?code={promo_id}'
+    fs = FileStorage()
+    p = fs._name2path(f'{_getID()}.png')
+    gen_qr_withlogo(qr_url, p, logopath=config.logopath, logoloc='cc')
+    webp = fs.webpath(p)
+    qr_file_url = env.entire_url('/idfile') + f'?path={webp}'
+    
+    return {
+        "widgettype": "VBox",
+        "options": {"width": "100%", "height": "100%", "spacing": 10},
+        "subwidgets": [
+            {"widgettype": "Image", "options": {"width": "340px", "height": "340px", "url": qr_file_url}},
+            {"widgettype": "HBox", "options": {"width": "100%", "cheight": 2},
+             "subwidgets": [
+                 {"widgettype": "Text", "options": {"otext": "促销码:", "i18n": True, "cwidth": 5}},
+                 {"widgettype": "Text", "options": {"text": promo_id}}
+             ]},
+            {"widgettype": "HBox", "options": {"width": "100%", "cheight": 2},
+             "subwidgets": [
+                 {"widgettype": "Text", "options": {"otext": "链接:", "i18n": True, "cwidth": 5}},
+                 {"widgettype": "Text", "options": {"text": qr_url, "css": "text-muted"}}
+             ]}
+        ]
+    }
+
+
 async def bind_customer(request, params_kw):
     """Bind customer to reseller+sale via promo code (called during registration/login).
     First-time binding only. Update discounts if new ones are lower.
@@ -727,6 +773,7 @@ def load_discount():
     env.list_marketings = list_marketings
     env.generate_promo_code = generate_promo_code
     env.disable_promo_code = disable_promo_code
+    env.generate_promo_qr = generate_promo_qr
     env.bind_customer = bind_customer
     env.get_customer_bind = get_customer_bind
     env.assign_customer_to_sale = assign_customer_to_sale
diff --git a/wwwroot/api/promo_code_qr.dspy b/wwwroot/api/promo_code_qr.dspy
index e6c5f2d..9745de1 100644
--- a/wwwroot/api/promo_code_qr.dspy
+++ b/wwwroot/api/promo_code_qr.dspy
@@ -1,76 +1,3 @@
 # 为选中的促销码生成二维码
-from ahserver.serverenv import ServerEnv
-from appPublic.qr import gen_qr_withlogo
-from appPublic.jsonConfig import getConfig
-from ahserver.filestorage import FileStorage
-from sqlor.dbpools import DBPools
-from appPublic.uniqueID import getID
-
-result = {'widgettype': 'Message', 'options': {'title': 'Error', 'message': 'Invalid', 'type': 'error'}}
-
-try:
-    env = ServerEnv()
-    dbname = env.get_module_dbname('discount')
-    promo_id = params_kw.get('id', '')
-
-    if not promo_id:
-        raise Exception('Missing promo code id')
-
-    async with DBPools().sqlorContext(dbname) as sor:
-        recs = await sor.R('discount_promo_code', {'id': promo_id})
-        if not recs:
-            raise Exception(f'Promo code {promo_id} not found')
-
-    # QR code URL: 扫码后进入促销绑定页面
-    config = getConfig()
-    qr_url = env.entire_url('./promote') + f'?code={promo_id}'
-    fs = FileStorage()
-    p = fs._name2path(f'{getID()}.png')
-    gen_qr_withlogo(qr_url, p, logopath=config.logopath, logoloc='cc')
-    webp = fs.webpath(p)
-    qr_file_url = env.entire_url('/idfile') + f'?path={webp}'
-
-    result = {
-        "widgettype": "VBox",
-        "options": {"width": "100%", "height": "100%", "spacing": 10},
-        "subwidgets": [
-            {
-                "widgettype": "Image",
-                "options": {
-                    "width": "340px",
-                    "height": "340px",
-                    "url": qr_file_url
-                }
-            },
-            {
-                "widgettype": "HBox",
-                "options": {"width": "100%", "cheight": 2},
-                "subwidgets": [
-                    {
-                        "widgettype": "Text",
-                        "options": {"otext": "促销码:", "i18n": True, "cwidth": 5}
-                    },
-                    {
-                        "widgettype": "Text",
-                        "options": {"text": promo_id}
-                    }
-                ]
-            },
-            {
-                "widgettype": "HBox",
-                "options": {"width": "100%", "cheight": 2},
-                "subwidgets": [
-                    {
-                        "widgettype": "Text",
-                        "options": {"otext": "链接:", "i18n": True, "cwidth": 5}
-                    },
-                    {
-                        "widgettype": "Text",
-                        "options": {"text": qr_url, "css": "text-muted"}
-                    }
-                ]
-            }
-        ]
-    }
-except Exception as e:
-    result = {'widgettype': 'Message', 'options': {'title': 'Error', 'message': str(e), 'type': 'error'}}
+result = await generate_promo_qr(request, params_kw)
+return result