Add cohorted_threads_privacy cohort setting: a user that is not in any cohort…

Add cohorted_threads_privacy cohort setting: a user that is not in any cohort will only see non-cohorted threads.

common/lib/xmodule/xmodule/course_module.py

@@ -1071,6 +1071,18 @@ class CourseDescriptor(CourseFields, SequenceDescriptor):
         return set(config.get("cohorted_discussions", []))
 
     @property
+    def cohorted_threads_privacy(self):
+        """
+        Return whether the course cohorted threads pricacy. If the privacy is set to 'cohort-only',
+        a user that is not in a cohort will only see threads that are not cohorted.
+        """
+        config = self.cohort_config
+        if config is None:
+            return 'public'
+
+        return config.get("cohorted_threads_privacy", 'public')
+
+    @property
     def inline_discussions_cohorting_default(self):
         """
         This allow to change the default behavior of inline discussions cohorting. By setting this to

lms/djangoapps/django_comment_client/forum/views.py

@@ -25,6 +25,9 @@ from openedx.core.djangoapps.course_groups.cohorts import (
     get_cohorted_commentables,
     get_cohort_by_id,
     
+    is_commentable_cohorted,
+    get_cohorted_threads_privacy,
+    get_cohort_by_id
 )
 from courseware.access import has_access
 from xmodule.modulestore.django import modulestore