hide clubs without event

tournaments/views.py

@@ -111,7 +111,12 @@ def tournaments(request):
     )
 
 def clubs(request):
-    clubs = Club.objects.all().order_by('name')
+    all_clubs = Club.objects.all().order_by('name')
+    clubs = []
+    for club in all_clubs:
+        if club.events_count() > 0:
+            clubs.append(club)
+
     return render(request, 'tournaments/clubs.html', {
         'clubs': clubs,
     })