form = SQLFORM(db.auth_user, fields = ['agree'], labels = {'agree':'Do you agree to the Terms and Conditions?'})
auth.settings.extra_fields['auth_user']= [
Field('agree_terms_and_conditions','boolean', label=T('I agree to terms and conditions'),default=False,requires=IS_NOT_EMPTY(error_message=T('You must agree the term conditions')),comment=XML(A(T('Read the terms and conditions'), _href=(URL('default', 'terms_and_conditions')), _target='blank')))
]