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function validateusername() {
        if(!empty($this->data['Account']['username'])) {
 
            if ($this->Account->findByUsername($this->data['Account']['username']))
            {
                //$this->set('error_msg','This Username is already taken');
                echo 'username is already taken';
            } else{
                //$this->set('error_msg', 'This Username is Available');
                echo 'username is available';
            }
        }
    }