Merge pull request #6 from vbabiy/better_validate

Use libphonenumber for validation

phonenumber_field/validators.py

@@ -8,5 +8,5 @@
 def validate_international_phonenumber(value):
     phone_number = to_python(value)
     if phone_number and not phone_number.is_valid():
-        raise ValidationError(_(u'Enter a valid phone number (e.g. +411234567).'))
+        raise ValidationError(_(u'The phone number entered is not valid.'))