exclude empty strings from ldap results

The uid attribute in a LDAP's entry cannot be an empty string. We need
to get an actual identifier.

gestioncof/autocomplete.py

@@ -77,7 +77,7 @@ def autocomplete(request):
             queries['clippers'] = [
                 Clipper(entry.uid.value, entry.cn.value)
                 for entry in entries
-                if entry.uid.value is not None
+                if entry.uid.value
                 and entry.uid.value not in usernames
             ]
 

kfet/autocomplete.py

@@ -96,7 +96,7 @@ def account_create(request):
             queries['clippers'] = [
                 Clipper(entry.uid.value, entry.cn.value)
                 for entry in entries
-                if entry.uid.value is not None
+                if entry.uid.value
                 and entry.uid.value not in usernames
             ]