Add candidate count method to ExamOrCollectionGenericBase and update exam list template

generic/models.py

@@ -1002,6 +1002,9 @@ class ExamOrCollectionGenericBase(models.Model, AuthorMixin):
     def add_marker(self, user):
         self.markers.add(user)
 
+    def get_candidate_count(self):
+        return self.valid_cid_users.count() + self.valid_user_users.count()
+
 
 class ExamBase(ExamOrCollectionGenericBase):
     exam_mode = models.BooleanField(

generic/templates/generic/partials/_exam_list.html

@@ -15,7 +15,7 @@
             </a>
             <small class="ms-2 text-muted">
               <span class="badge bg-secondary">Questions: {{ exam.get_questions|length }}</span>
-              <span class="badge bg-secondary ms-1">Candidates: {{ exam.stats_candidates|default:0|floatformat:0 }}</span>
+              <span class="badge bg-secondary ms-1">Candidates: {{ exam.get_candidate_count }}</span>
             </small>
           </h5>
           <small class="text-muted">Authors: {{ exam.get_authors }}</small>