Model Anggota

function valid_username($username){
            $query = $this->db->get_where($this->tb_anggota, array('username' => $username));
            if ($query->num_rows() > 0)
            {
                return TRUE;
            }
            else
            {
                return FALSE;
            }
        }

public function validation1() {
            $this->load->library (array ('recaptcha','form_validation'));
            $this->form_validation->set_rules('namaperusahaan','Nama Perusahaan','required|min_length[5]|max_length[30]');
            $this->form_validation->set_rules('alamat','Alamat','required|max_length[200]');
            $this->form_validation->set_rules('email','Email','required|min_length[5]|max_length[30]');
            $this->form_validation->set_rules('notelp','Nomor Telepon','required|numeric|min_length[6]|max_length[15]');
            $this->form_validation->set_rules('npwp','NPWP','required');
            $this->form_validation->set_rules('username','User Name','required|min_length[6]|max_length[20]|xss_clean|callback_valid_username');
            $this->form_validation->set_rules('password','password','required|min_length[6]|max_length[100]|matches[passconf]');
            $this->form_validation->set_rules('passconf','required','trim');

        if ($this->form_validation->run() == FALSE)
            {
                return FALSE;
            }
            else
            {
                return TRUE;
            }

        }