php - delete data in codeigniter -

i unable delete data in codeiginter new please me....

my code view page is

<?php    foreach($item $field)    {    ?>    <tr>        <td><?php echo $field->facility_id; ?></td>        <td><?php echo $field->facility_name; ?></td>        <td><?php echo $field->facility_desc; ?></td>        <td>edit</a></td>        <td><?php echo anchor('http://localhost/alaris_health/index.php/admin_controller/delete_facility','delete',$field->facility_id);?></td>    </tr>    <?php } ?> 

and code controller is

function delete_facility($fac_id) {     $this->load->model('admin_model');     $this->admin_model->remove_facility($fac_id);     $this->load->view('facility_view',$data); } 

and code model is

function remove_facility($fac_id) {      $this->db->delete('admin_facility_code', array('facility_id' => $fac_id));  } 

instead of :

<?php echo anchor('http://localhost/alaris_health/index.php/admin_controller/delete_facility','delete',$field->facility_id);?>  function delete_facility($fac_id) {     $this->load->model('admin_model');     $this->admin_model->remove_facility($fac_id);     $this->load->view('facility_view',$data); } 

try :

<?php echo anchor('http://localhost/alaris_health/index.php/admin_controller/delete_facility/'.$field->facility_id.'','delete','');?>  function delete_facility() {     $this->load->model('admin_model');     $fac_id = $this->uri->segment(5);     $this->admin_model->remove_facility($fac_id);     $this->load->view('facility_view'); }