Add unicity check for username (closes #539)

1 files changed, 7 insertions, 0 deletions

diff --git a/ishtar/ishtar_base/forms_common.py b/ishtar/ishtar_base/forms_common.py
index c7ca15472..d6a95aa75 100644
--- a/ishtar/ishtar_base/forms_common.py
+++ b/ishtar/ishtar_base/forms_common.py
@@ -332,6 +332,13 @@ class AccountForm(forms.Form):
             if not password:
                 raise forms.ValidationError(_(u"You must provide a correct \
 password."))
+        # check username unicity
+        usernames = models.IshtarUser.objects.filter(username=
+                                                  cleaned_data.get('username'))
+        if cleaned_data.get('pk'):
+            usernames.exclude(pk=cleaned_data.get('pk'))
+        if usernames.count():
+            raise forms.ValidationError(_(u"This username already exists."))
         return cleaned_data
 
 class FinalAccountForm(forms.Form):