Controller

<?php
class Barang extends CI_Controller{

    function __construct(){
        parent::__construct();
        $this->load->model('model_umroh');
    }

    function index(){
        $data['user'] = $this->model_umroh->tampil_data()->result();
        $this->load->view('lihat_data',$data);
    }

    function tambah(){
        $this->load->view('form_input');
    }

    function tambah_aksi(){
          $id_umroh                     = addslashes($this->input->post('id_umroh'));
        $nama_paket                   = addslashes($this->input->post('nama_paket'));
        $harga_paket                   = addslashes($this->input->post('harga_paket'));
        $pilih_paket                  = addslashes($this->input->post('pilih_paket'));
        $prog_hari                  = addslashes($this->input->post('prog_hari'));
        $akomodasi_hotel                 = addslashes($this->input->post('akomodasi_hotel'));

        $data = array(
              'id_umroh'   => $id_umroh,
                'nama_paket'  => $nama_paket,
                'harga_paket' => $harga_paket,
                'pilih_paket'=> $pilih_paket,
                'prog_hari'    => $prog_hari,
                'akomodasi_hotel'     => $akomodasi_hotel
            );
        $this->model_umroh->input_data($data,'tb_umroh');
        redirect('barang/index');
    }

}