From 8a602d8d4b5e7d6181004e100d11403465f4fce2 Mon Sep 17 00:00:00 2001
From: Eduardo Edson Batista Cordeiro Alves <eduardoalves@interlegis.leg.br>
Date: Wed, 29 Jun 2016 17:24:52 -0300
Subject: [PATCH] #38 valida username existente

---
 sigi/apps/usuarios/forms.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/sigi/apps/usuarios/forms.py b/sigi/apps/usuarios/forms.py
index afe0797..b3a67ed 100644
--- a/sigi/apps/usuarios/forms.py
+++ b/sigi/apps/usuarios/forms.py
@@ -171,6 +171,15 @@ class UsuarioForm(ModelForm):
             raise ValidationError(msg)
         return True
 
+    def clean_username(self):
+        usuario = User.objects.filter(
+            username=self.cleaned_data[u'username']).exists()
+
+        if usuario:
+            raise ValidationError(u'Usuário existente.')
+
+        return self.cleaned_data
+
     def clean_primeiro_numero(self):
         cleaned_data = self.cleaned_data