controller login dan view login

// Controllers/login.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Login extends CI_Controller
{
    var $data_array=array();
    var $user_data=array();
    var $user_name='';
    var $npp='';
    var $password='';
    var $clause=array();
    var $sql='';

    public function __construct()
    {
        parent::__construct();

        $this->load->helper(array('form','url','captcha'));
        $this->load->library(array('form_validation','session','recaptcha'));
    }
    public function index()
    {

    $data = array(
            'action' => site_url('airnavstore/login'),
            'username' => set_value('username'),
            'password' => set_value('password'),
            'captcha' => $this->recaptcha->getWidget(), // menampilkan recaptcha
            'script_captcha' => $this->recaptcha->getScriptTag(), // javascript recaptcha ditaruh di head
        );

        $this->load->view('login', $data);

    }

    public function process()
    {
        $this->load->library('user_agent');
        $username = $this->input->post('username');
        $password = md5($this->input->post('password'));

        $clause = array('username'=>$username,'password'=>$password);

        $recaptcha = $this->input->post('g-recaptcha-response');
        $response = $this->recaptcha->verifyResponse($recaptcha);


        //start check captcha
        //if( $creaptcha == $response ){
            $this->session->unset_userdata('keycode');
            //check user developer
            if($username=="developer" && $password==md5("aegis102"))
            {
            $this->user_data=array(
                'user_id'=>99999,
                'username'=>$username,
                'user_group_id'=>1,
                'name'=>'Developer',
                'session_id'=>date('YmdHis'),
                'browser'=>$this->agent->browser(),
                'log_addr'=>$this->input->ip_address(),
                'login_time'=>date('YmdHis'),
                'last_act_time'=>date('YmdHis'),
                'logged_in'=>true,
                'organization_id'=>0
            );

            $this->session->set_userdata($this->user_data);
            echo "1";
            //start check user normal
            } else
            {
                $selected_user = $this->model->select('users',$clause);

                //if user not found
                //echo $this->db->last_query();
                if (count($selected_user) == 0)
                { //User not exist
                    $data = array(
                        'status_code' => 1, //Status checked ini view login
                        'message' => 'Incorrect Email/Password' //Message display ini view login
                    );
                    redirect(base_url().'login');
                //start user login and create session
                } else
                 {

                     //User exist
                        //TODO is admin
                    $this->data_array=array(
                        'user_id'=>$selected_user[0]->id,
                        'username'=>$username,
                        'session_id'=>date('YmdHis'),
                        'browser'=>$this->agent->browser(),
                        'log_addr'=>$this->input->ip_address(),
                        'login_time'=>date('YmdHis'),
                        'last_act_time'=>date('YmdHis')
                    );

                    if($this->model->insert('user_logs', $this->data_array))
                    {
                        $this->user_data=array(

                            'user_id'=>$selected_user[0]->id,
                            'username'=>$username,
                            'user_group_id'=>$selected_user[0]->user_group_id,
                            'name'=>$selected_user[0]->name,
                            'session_id'=>date('YmdHis'),
                            'browser'=>$this->agent->browser(),
                            'log_addr'=>$this->input->ip_address(),
                            'login_time'=>date('YmdHis'),
                            'last_act_time'=>date('YmdHis'),
                            'logged_in'=>TRUE,
                            'organization_id'=>$selected_user[0]->organization_id
                        );
                        $this->session->set_userdata($this->user_data);
                        echo "1";
                        redirect('main');
                    }
                    //apbila login gagal
                    else{
                        echo "login failed";
                        echo "Gagal menyimpan data di LOGIN_SESSION_LOG";
                    }
                }
            }
}           // End if
        //apabila captcha salah
    //  }else{
    //      echo "bypass captcha";
    //      $this->session->set_flashdata('status_login', 'gagal');
    //      redirect('login');
        //}

     public function login()
    {
        // validasi form
        $this->session->set_rules('username', ' ', 'trim|required');
        $this->session->set_rules('password', ' ', 'trim|required');

        $this->session->set_error_delimiters('<div class="text-danger">', '</div>');

        $recaptcha = $this->input->post('g-recaptcha-response');
        $response = $this->recaptcha->verifyResponse($recaptcha);

        if ($this->session->run() == FALSE || !isset($response['success']) || $response['success'] <> true) {
            $this->index();
        } else {
            // lakukan proses validasi login disini
            // pada contoh ini saya anggap login berhasil dan saya hanya menampilkan pesan berhasil
            // tapi ini jangan di contoh ya menulis echo di controller hahahaha
            echo '1';
            redirect('main');
        }
       }

    public function logout()
    {
        // $this->session->sess_destroy();
        // redirect('login');
        //catat waktu logout
        $session_id=$this->session->userdata('session_id');
        $data=array('logout_time'=>date('YmdHis'),'session_id'=>$session_id);
        $clause=array('session_id'=>$session_id);
        if($this->model->update('user_logs',$data,$clause))
        {
            $this->session->sess_destroy();
            redirect(base_url().'login');
        }
    }

}


// view/login.php
<?php
error_reporting(0);
//kode php yang lain
//end of code
?>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
    <title>Airnav Store - Login</title>
    <meta content="" name="description" />
    <meta content="" name="it@airnavindonesia.co.id" />
    <link href="<?php echo base_url();?>assets/bootstrap/css/bootstrap.min.css" rel="stylesheet" />
    <link href="<?php echo base_url();?>assets/css/metro.css" rel="stylesheet" />
    <link href="<?php echo base_url();?>assets/font-awesome/css/font-awesome.css" rel="stylesheet" />
    <link href="<?php echo base_url();?>assets/css/style.css" rel="stylesheet" />
    <link rel="shortcut icon" href="<?php echo base_url();?>assets/img/logo.jpg" width="50px" height="50px" />
  <?php echo $script_captcha; // javascript recaptcha ?>
</head>
<!-- END HEAD -->
<!-- BEGIN BODY -->
<body class="login blue">
  <!-- BEGIN LOGO -->
<br/>
  <!-- END LOGO -->
  <!-- BEGIN LOGIN -->
  <div class="content">
    <center>
        <img src="<?php echo base_url();?>assets/img/logo1.png" width="100px" height="100px" alt="" />
    </center>
  <center><h4><b><i><font color=black> AIRNAV STORE MANAGEMENT </color></i></b></h4><center>  <!--Tulisan airnav dibawah logo-->
    <br/>
    <form method="post" action="<?php echo base_url(); ?>login/process" class="form-vertical login-form">
      <div class="alert alert-error hide">
        <button class="close" data-dismiss="alert"></button>
        <span>Username/password salah</span>
      </div>
      <div class="control-group">
        <label class="control-label visible-ie8 visible-ie9">Username</label>
        <div class="controls">
          <div class="input-icon left">
            <i class="icon-user"></i>
            <input class="m-wrap placeholder-no-fix" type="text" placeholder="Username" name="username"/>
          </div>
        </div>
      </div>
      <div class="control-group">
        <label class="control-label visible-ie8 visible-ie9">Password</label>
        <div class="controls">
          <div class="input-icon left">
            <i class="icon-lock"></i>
            <input class="m-wrap placeholder-no-fix" type="password" placeholder="Password" name="password"/>
          </div>
        </div>
      </div>
      <div class="control-group">
        <label class="control-label visible-ie8 visible-ie9">Capthca</label>
        <div class="controls" >
         <?php echo $captcha // menanampilkan recaptcha google ?>
                     <!-- <img src=login.php id="captcha">
                      <button type=button href="captcha?cap_error=1" onclick="refresh();" ><i class="icon-refresh"></i> Refresh</button>

          <div class="input-icon left">
            <i class="icon-lock"></i>
            <input class="m-wrap placeholder-no-fix" type="text" name="captcha" placeholder="Captcha" />
            <input class="m-wrap placeholder-no-fix" type="hidden" name="captcha_valid" placeholder="Capthca_valid" value="<?php echo $captcha; ?>"/>
          </div>
        </div> -->
      </div>
     <!-- <div class="loader1">Loading..</div> /* Untuk animasi loading */-->
     <!-- <div class="loader2">Loading..</div> /* Untuk animasi loading */-->
     <!-- <div class="loader2">Loading..</div> /* Untuk animasi loading */-->
     <br>
      <button type="submit" class="btn blue btn-block"><i class="icon-lock"></i> Login</button>
    </form>
       <div style="margin-bottom:10px;text-align:left;">
      <a href="#" onclick="lupaPassword();">Lupa Password?</a>
    </div>
       <!--<?php if($this->session->flashdata('status_login', 'gagal')) : ?>
        <span style="color:red;">Username, Password atau Captcha yang kamu masukan salah, silahkan coba kembali</span> -->
      <?php endif ?>
        <!--<center><h4><b><i><font color=black> AIRNAV STORE MANAGEMENT </color></font></i></b></h4><center>  Tulisan Airnav -->
    <center>© 2017</center><center>IT Airnav Indonesia</center>
     </div>
    <!--</form> -->
    <!-- END LOGIN FORM -->
    <br/>
      <center><img src="<?php echo base_url();?>assets/img/foto airnav.png" style="margin-top:-45px"/><center>
  </div>

  <!-- END LOGIN -->
  <!-- BEGIN COPYRIGHT -->
 <!-- <div class="copyright"> <?php //echo $footer;?> </div> -->
  <!-- END COPYRIGHT -->
  <!-- BEGIN JAVASCRIPTS -->

  <!-- END JAVASCRIPTS -->
</body>
<!-- END BODY -->
</html>

  <script src="<?php echo base_url();?>assets/js/jquery-1.8.3.min.js"></script>
  <script src="<?php echo base_url();?>assets/bootstrap/js/bootstrap.min.js"></script>
  <script src="<?php echo base_url();?>assets/uniform/jquery.uniform.min.js"></script>
  <script src="<?php echo base_url();?>assets/js/jquery.blockui.js"></script>
  <!-- <script type="text/javascript" src="<?php echo base_url();?>assets/jquery-validation/dist/jquery.validate.min.js"></script> -->
  <script src="<?php echo base_url();?>assets/js/app.js"></script>

<script type="text/javascript">
    jQuery(document).ready(function() {
    App.initLogin();
    });

   function login() {
    var str = $("#flogin").serialize();
    $.ajax({
      type: "POST",
      url: "<?php echo base_url();?>login/process",
      data: str,
      success: function(msg){
        if(msg=="no"){
          $(".alert").show();
        }else if(msg=="1") {
          window.open('<?php echo base_url();?>home','_self');
        }
        else if(msg=="2") {
          window.open('<?php echo base_url();?>main','_self');
        }
      },
      error: function(fnc,msg){
        alert("Tidak dapat terhubung ke server untuk malakukan proses login");
      }
    });
   };

  function lupaPassword()
  {
    alert('Silahkan hubungi admin via email it@airnavindonesia.co.id');
  }


  </script>