Force traininglevelqualifications to be unique

assets/forms.py

@@ -45,7 +45,7 @@ class CableTypeForm(forms.ModelForm):
         model = models.CableType
         fields = '__all__'
 
-    def clean(self):
+    def clean(self): # TODO Does unique_together work better than this?
         form_data = self.cleaned_data
         queryset = models.CableType.objects.filter(Q(plug=form_data['plug']) & Q(socket=form_data['socket']) & Q(circuits=form_data['circuits']) & Q(cores=form_data['cores']))
         # Being identical to itself shouldn't count...

training/models.py

@@ -152,3 +152,6 @@ class TrainingLevelQualification(models.Model):
 
     def __str__(self):
         return "{} qualified as a {}".format(self.trainee, self.level)
+
+    class Meta:
+        unique_together = ["trainee", "level"]