1 files changed, 5 insertions, 0 deletions
diff --git a/forms.py b/forms.py
index a58f98b..75f7be1 100644
--- a/forms.py
+++ b/forms.py
@@ -43,6 +43,11 @@ class SettingsForm(Form):
     password_confirm = PasswordField(u'Passwort bestätigen')
     mail = TextField('E-Mail-Adresse', [validators.Optional(), validators.Email(), validators.Length(min=6, max=50)])
 
+    def validate_mail(form, field):
+        results = g.ldap.find_by_mail(field.data)
+        for user in results:
+            if user.uid != g.user.uid:
+                raise ValidationError(u'Diese E-Mail-Adresse wird schon von einem anderen account benutzt!')
 
     def get_servicepassword(self, service_id):
         return getattr(self, 'password_%s' % service_id)