Hi,

I am creating a form with SQLFORM.factory. I have a field 'username' and 

Field('username','string',requires=[IS_NOT_EMPTY(), 
IS_NOT_IN_DB(db,'auth_user.username')]

and when try to use I am having the error:

<type 'exceptions.Exception'> Validation error, field:username 
<gluon.validators.IS_NOT_IN_DB object at 0x7ffaa4136310>

What's wrong?

Thanks
BR
André

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