fixing #424

rowers/plannedsessions.py

@@ -463,10 +463,15 @@ def add_team_session(t,ps):
     return 1
 
 def add_rower_session(r,ps):
-    ps.rower.add(r)
-    ps.save()
+    teams = Team.objects.filter(manager=ps.manager)
+    members = Rower.objects.filter(team__in=teams).distinct()
+    if r in members:
+        ps.rower.add(r)
+        ps.save()
 
-    return 1
+        return 1
+
+    return 0
 
 def remove_team_session(t,ps):
     ps.team.remove(t)