php - How do I fetch the data from database and then post it -

this program let login first need have edit profile/info. cannot fetch data database, when click page profile , nothing shown.

model

function login($username, $password) {       $this->db->select('username, password');     $this->db->from('tblsec');     $this->db->where('username', $username);     $this->db->where('password', md5($password));     $this->db->limit(1);      $query = $this->db->get();      if ($query->num_rows() == 1) {         return $query->result();     } else {         return false;     } } public function get_id($username) {     $query = $this->db->query("select * tblsec username = '$username'");     $r = $query->result();     return $r; } 

view

<?php foreach ($username $user): ?>     <div class="form-group">         <label class="col-sm-2 control-label">name</label>         <div class="col-sm-5">             <?php echo $user->firstname; ?> &nbsp;<?php echo $user->lastname; ?>         </div>     </div>     <br>     <div class="form-group">         <label class="col-sm-2 control-label">password</label>         <div class="col-sm-5">             **********         </div>     </div>     <br>                   <div class="form-group">         <label class="col-sm-2 control-label">last name</label>         <div class="col-sm-5">             <?php echo $user->lastname; ?>         </div>     </div>     <br>                    <br>     <div class="form-group">         <label class="col-sm-2 control-label">email</label>         <div class="col-sm-5">             <?php echo $user->email; ?>         </div>     </div>     <br> <?php endforeach; ?> </div> </div> 

controller

function __construct() {     parent::__construct();     $this->load->model('secretary_model', '', true);     $this->load->library('form_validation');     $this->load->helper('date'); }  public function index() {     if ($this->session->userdata('logged_in')) {         $this->header();              $this->load->view('secretary/sec_login_view');     } else {         redirect('secretary/sec_login_view');     } } public function profile() {     if ($this->session->userdata('logged_in')) {         $username = $this->session->userdata('username');         $data['username'] = $this->secretary_model->get_id($username);         $this->header2();         $this->load->view('secretary/secretary_profile', $data);     } else {         redirect('secretary/login', 'refresh');     } } 

first of all, make sure have set logged_in session, ensure user logged in or not.

// after checking username , password $this->session->set_userdata('logged_in', true);  

second if username or related data not found return false or appropriate error in model.

/**  *@return mixed object|false  */ function get_id($username) {     $query = $this->db->query("select * tblsec username = '$username'");      return $query->num_rows() > 0 ? $query->result() : false; } 

then check in view value in view this:

if( is_array($username) && count($username) > 0 ) {     foreach ($username $user):          // set data accordingly      endforeach; } else {     echo "sorry! related data not found!"; } 

its approach fetch , debug things accordingly.