fix: add CURRENT_TIMESTAMP defaults to created_at/updated_at

models/sub_distributors.json

@@ -111,12 +111,14 @@
       "name": "created_at",
       "title": "创建时间",
       "type": "datetime",
-      "nullable": "no"
+      "nullable": "no",
+      "default": "CURRENT_TIMESTAMP"
     },
     {
       "name": "updated_at",
       "title": "更新时间",
-      "type": "datetime"
+      "type": "datetime",
+      "default": "CURRENT_TIMESTAMP"
     }
   ],
   "indexes": [
@@ -158,4 +160,4 @@
       "cond": "parentid='sub_distributor_status'"
     }
   ]
-}
+}