Minor optimization in discussion forum

Author: CruiseDevice

yaksh/models.py

@@ -1112,10 +1112,10 @@ def get_quiz_details(self):
                 for quiz in self.get_quizzes()]
 
     def get_learning_units(self):
-        learning_modules = self.learning_module.all()
+        learning_modules = self.get_learning_modules()
         learning_units = []
         for module in learning_modules:
-            learning_units.extend(module.get_learning_units())
+            learning_units.extend(module.learning_unit.select_related('lesson'))
         return learning_units
 
     def get_lesson_posts(self):

yaksh/views.py

@@ -3582,7 +3582,6 @@ def lessons_forum(request, course_id):
         base_template = 'manage.html'
         moderator = True
     course = get_object_or_404(Course, id=course_id)
-    course_ct = ContentType.objects.get_for_model(course)
     lesson_posts = course.get_lesson_posts()
     return render(request, 'yaksh/lessons_forum.html', {
         'user': user,