Moving duplicate error message to init

cadasta/organization/forms.py

@@ -128,6 +128,8 @@ class Meta:
     def __init__(self, *args, **kwargs):
         self.user = kwargs.pop('user', None)
         super().__init__(*args, **kwargs)
+        self.fields['name'].error_messages['unique'] = _(
+            "Organization with this name already exists.")
 
     def clean_name(self):
         name = self.cleaned_data['name']
@@ -136,10 +138,6 @@ def clean_name(self):
             raise forms.ValidationError(
                 _("Organization name cannot be “Add” or “New”."))
 
-        if Organization.objects.filter(name=name).exists():
-            raise forms.ValidationError(
-                _("Organization with this name already exists."))
-
         return name
 
     def save(self, *args, **kwargs):