some improvements in team sessions

rowers/forms.py

@@ -948,6 +948,19 @@ class PlannedSessionTeamForm(forms.Form):
 
         self.fields['team'].queryset = Team.objects.filter(manager=user)
 
+    def clean(self):
+        if any(self.errors):
+            return
+
+        cd = self.cleaned_data
+        print cd['team'],'aap'
+        if not cd['team']:
+            raise forms.ValidationError(
+                'You must select at least one team'
+                )
+
+        return cd
+
 
 class PlannedSessionTeamMemberForm(forms.Form):
     members = forms.ModelMultipleChoiceField(