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James Bennett committed 95c7747 Draft

Fix problems that can occur with legacy sites that already have multiple case-insensitive variations of a username.

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Files changed (1)

registration/forms.py

         in use.
         
         """
-        try:
-            user = User.objects.get(username__iexact=self.cleaned_data['username'])
-        except User.DoesNotExist:
+        existing = User.objects.filter(username__iexact=self.cleaned_data['username'])
+        if existing.exists():
+            raise forms.ValidationError(_("A user with that username already exists."))
+        else:
             return self.cleaned_data['username']
-        raise forms.ValidationError(_("A user with that username already exists."))
 
     def clean(self):
         """