add exam collections

generic/models.py

@@ -519,7 +519,7 @@ class SeriesBase(models.Model):
                 pass
 
 
-class ExamCollectionGenericBase(models.Model):
+class ExamOrCollectionGenericBase(models.Model):
     """Holds functions that relate to both case and other exams
 
     e.g. user management
@@ -734,7 +734,7 @@ class ExamCollectionGenericBase(models.Model):
                 )
 
 
-class ExamBase(ExamCollectionGenericBase):
+class ExamBase(ExamOrCollectionGenericBase):
     exam_mode = models.BooleanField(
         help_text="If an exam should be taken in exam mode (users results will be submited to the server for marking)",
         default=False,
@@ -1517,3 +1517,9 @@ def create_user_profile(sender, instance, created, **kwargs):
 @receiver(post_save, sender=User)
 def save_user_profile(sender, instance, **kwargs):
     instance.userprofile.save()
+
+class ExamCollection(models.Model):
+    name = models.CharField(max_length=255)
+
+    date = models.DateField(blank=True,null=True)
+