fix: #12496, url in schema

public/openapi/components/schemas/PostObject.yaml

@@ -11,6 +11,11 @@ PostObject:
       type: number
       description: The post that this post is in reply to
       nullable: true
+    url:
+      type: string
+      description: |
+        A permalink to the post content.
+        For posts received via ActivityPub, it is the url of the original piece of content.
     content:
       type: string
     uid:

src/posts/create.js

@@ -44,7 +44,7 @@ module.exports = function (Posts) {
 		if (data.handle && !parseInt(uid, 10)) {
 			postData.handle = data.handle;
 		}
-		if (_activitypub.url) {
+		if (_activitypub && _activitypub.url) {
 			postData.url = _activitypub.url;
 		}