add new variable for tournament ranking publishing

tournaments/models/tournament.py

@@ -57,6 +57,7 @@ class Tournament(models.Model):
     should_verify_group_stage = models.BooleanField(default=False)
     publish_tournament = models.BooleanField(default=False)
     hide_points_earned = models.BooleanField(default=False)
+    publish_rankings = models.BooleanField(default=False)
 
     def __str__(self):
         if self.name:
@@ -472,7 +473,7 @@ class Tournament(models.Model):
         return matches
 
     def display_rankings(self):
-        if self.end_date is not None:
+        if self.publish_rankings is True and self.end_date is not None:
             return True
         return False