Need some idea

Remember to put database function inside a model, not a library.
A model doesn't need the & get_instance(), you can refer to $this.

So, in your model, make this function:

PHP Code:

function get_permission_conditions()
{
  $permissions = $this->db->get('permissions');
  $rv = array();
  foreach($permissions->result() as $p) {
     $rv[$p->shortname] = array(
       'View' => $p->enableView,
       'ViewOwn' => $p->enableViewOwn,
       'Create'=> $p->enableCreate,
       'Edit' => $p->enableEdit,
       'Delete' => $p->enableDelete,
    );
  }
  return $rv;
}