Fix exception on editing a post

Cannot access private property mod_moodleoverflow\discussion\discussion::$userid

line 69 of /mod/moodleoverflow/classes/anonymous.php: Error thrown
line 582 of /mod/moodleoverflow/classes/post/post_control.php: call to mod_moodleoverflow\anonymous::is_post_anonymous()
line 125 of /mod/moodleoverflow/post.php: call to mod_moodleoverflow\post\post_control->build_postform()

Signed-off-by: Daniel Ziegenberg <[email protected]>

Author: ziegenberg

classes/anonymous.php

@@ -24,6 +24,8 @@
 
 namespace mod_moodleoverflow;
 
+use mod_moodleoverflow\discussion\discussion;
+
 /**
  * Class for Moodleoverflow anonymity
  *
@@ -49,14 +51,14 @@ class anonymous {
     /**
      * Checks if post is anonymous.
      *
-     * @param object $discussion              moodleoverflow discussion
+     * @param discussion $discussion              moodleoverflow discussion
      * @param object $moodleoverflow
      * @param int $postinguserid        user id of posting user
      *
      * @return bool true if user is not logged in, everything is marked anonymous
      * and if the question is anonymous and there are no answers yet, else false
      */
-    public static function is_post_anonymous($discussion, $moodleoverflow, $postinguserid): bool {
+    public static function is_post_anonymous(discussion $discussion, $moodleoverflow, $postinguserid): bool {
         if ($postinguserid == 0) {
             return true;
         }
@@ -66,7 +68,7 @@ public static function is_post_anonymous($discussion, $moodleoverflow, $postingu
         }
 
         if ($moodleoverflow->anonymous == self::QUESTION_ANONYMOUS) {
-            return $discussion->userid == $postinguserid;
+            return $discussion->get_userid() == $postinguserid;
         }
 
         return false;