diff --git a/collection/opendb-news-comments/collection.json b/collection/opendb-news-comments/collection.json
index 81a0e89..c697d57 100644
--- a/collection/opendb-news-comments/collection.json
+++ b/collection/opendb-news-comments/collection.json
@@ -3,10 +3,10 @@
     "bsonType": "object",
     "required": ["article_id", "user_id", "comment_content", "like_count", "comment_type", "reply_user_id", "reply_comment_id"],
     "permission": {
-      "read": true, 
+      "read": true,
       "create": "auth.uid != null",
-      "update": "doc.uid == auth.uid",
-      "delete": "doc.uid == auth.uid" 
+      "update": "doc.user_id == auth.uid",
+      "delete": "doc.user_id == auth.uid"
     },
     "properties": {
       "_id": {
@@ -15,21 +15,21 @@
       "article_id": {
         "bsonType": "string",
         "description": "文章ID，opendb-news-posts 表中的`_id`字段",
-		"foreignKey":"opendb-news-articles._id"
+        "foreignKey": "opendb-news-articles._id"
       },
       "user_id": {
         "bsonType": "string",
         "description": "评论者ID，参考`uni-id-users` 表",
-		"forceDefaultValue": {
-		  "$env": "uid"
-		},
-		"foreignKey":"uni-id-users._id"
+        "forceDefaultValue": {
+          "$env": "uid"
+        },
+        "foreignKey": "uni-id-users._id"
       },
       "comment_content": {
         "bsonType": "string",
         "description": "评论内容",
         "title": "评论内容",
-		"trim":"right"
+        "trim": "right"
       },
       "like_count": {
         "bsonType": "int",
@@ -42,12 +42,12 @@
       "reply_user_id": {
         "bsonType": "string",
         "description": "被回复的评论用户ID，comment_type为1时有效",
-		"foreignKey":"uni-id-users._id"
+        "foreignKey": "uni-id-users._id"
       },
       "reply_comment_id": {
         "bsonType": "string",
         "description": "被回复的评论ID，comment_type为1时有效",
-		"foreignKey":"opendb-news-comments._id"
+        "foreignKey": "opendb-news-comments._id"
       },
       "comment_date": {
         "bsonType": "timestamp",
@@ -66,26 +66,25 @@
     }
   },
   "data": [],
-  "index": [
-       { 
-            "IndexName": "article_id_", 
-            "MgoKeySchema": { 
-                "MgoIndexKeys": [{
-                    "Name": "article_id", 
-                    "Direction": "1" 
-                }],
-                "MgoIsUnique": false
-            }
-        },
-         { 
-            "IndexName": "user_id_", 
-            "MgoKeySchema": { 
-                "MgoIndexKeys": [{
-                    "Name": "user_id", 
-                    "Direction": "1" 
-                }],
-                "MgoIsUnique": false
-            }
-        }
+  "index": [{
+      "IndexName": "article_id_",
+      "MgoKeySchema": {
+        "MgoIndexKeys": [{
+          "Name": "article_id",
+          "Direction": "1"
+        }],
+        "MgoIsUnique": false
+      }
+    },
+    {
+      "IndexName": "user_id_",
+      "MgoKeySchema": {
+        "MgoIndexKeys": [{
+          "Name": "user_id",
+          "Direction": "1"
+        }],
+        "MgoIsUnique": false
+      }
+    }
   ]
 }