1: <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); 
 2: 
 3: class Roles_Model extends CI_Model {
 4:     /**
 5:      * Class Constructor
 6:      */
 7:     public function __construct() {
 8:         parent::__construct();
 9:     }
10:     
11:     /**
12:      * Get the record id of a particular role.
13:      * 
14:      * @param string $role_slug The selected role slug. Slugs are 
15:      * defined in the "application/config/constants.php" file.
16:      * @return int Returns the database id of the roles record.
17:      */
18:     public function get_role_id($role_slug) {
19:         return $this->db->get_where('ea_roles', array('slug' => $role_slug))->row()->id;
20:     }
21:     
22:     /**
23:      * Returns all the privileges (bool values) of a role slug.
24:      * 
25:      * The privilege numbers are converted into bool values of the four main actions (view,
26:      * add, edit, delete). By checking each value you can know if the user is able to perform
27:      * this action.
28:      * 
29:      * @param string $slug The role slug.
30:      * @return array Returns the privilege value.
31:      */
32:     public function get_privileges($slug) {
33:         $privileges = $this->db->get_where('ea_roles', array('slug' => $slug))->row_array();
34:         unset($privileges['id'], $privileges['name'], $privileges['slug'], $privileges['is_admin']);
35:         
36:         // Convert the numeric values to bool so that is easier to check whether a 
37:         // user has the required privileges for a specific action.
38:         foreach($privileges as &$value) {      
39:             $privileges_number = $value; 
40:             
41:             $value = array(
42:                 'view' => FALSE,
43:                 'add' => FALSE,
44:                 'edit' => FALSE,
45:                 'delete' => FALSE
46:             );
47:             
48:             if ($privileges_number > 0) {
49:                 if (intval($privileges_number / PRIV_DELETE) == 1) {
50:                     $value['delete'] = TRUE;
51:                     $privileges_number -= PRIV_DELETE;
52:                 }
53: 
54:                 if (intval($privileges_number / PRIV_EDIT) == 1) {
55:                     $value['edit'] = TRUE;
56:                     $privileges_number -= PRIV_EDIT;
57:                 }
58: 
59:                 if (intval($privileges_number / PRIV_ADD) == 1) {
60:                     $value['add'] = TRUE;
61:                     $privileges_number -= PRIV_ADD;
62:                 }
63: 
64:                 $value['view'] = TRUE;
65:             }   
66:         }
67:         
68:         return $privileges;
69:     }
70: }
71: 
72: /* End of file roles_model.php */
73: /* Location: ./application/models/roles_model.php */