Controller Admin

public function simpananggota(){
        $dbconnect = $this->load->database();
        $this->load->model('manggota');

            if($this->manggota->validation1() == TRUE){

                $data1 = array (
                'nama_perusahaan'=> $this->input->post('namaperusahaan'),
                'alamat'=> $this->input->post('alamat'),
                'email'=> $this->input->post('email'),
                'no_telp'=> $this->input->post('notelp'),
                'npwp'=> $this->input->post('npwp'),
                'username'=> $this->input->post('username'),
                'password'=> md5($this->input->post('password')),
                );
                    $this-> manggota->simpananggota($data1);
                    $this->session->set_flashdata("pesan", "<div class=\"col-md-12\"><div class=\"alert alert-success\" id=\"alert\"> Berhasil menambah anggota! </div></div>");
                    redirect('Admin/daftaranggota');
            }
            else{
                $this->session->set_flashdata("pesan", "<div class=\"col-md-12\"><div class=\"alert alert-danger\" id=\"alert\"> Gagal menambah anggota, Mohon lengkapkan semua data yang tersedia.</div></div>");
                $this->tambahanggota();
                }
    }

 function valid_username($nip){
        if ($this->manggota->validusername($username) == TRUE)
        {
            return FALSE;
        }
        else
        {
            return TRUE;
        }
    }