php - Table prefix in pyrocms -


i working on custom multiple delete in pyrocms module,how use delete in model code: 

 protected $_table = 'accounts';     public function muldelete($muldelete)          {                $sql = 'delete ' . $this->_table . ' id in('.$muldelete. ')';             $query = $this->db->query($sql);          }

but $this->_table returning accounts instead of username_accounts,how check username table prefix in clause in pyrocms

$sql = 'delete ' .'username_'. $this->_table . ' id in('.$muldelete. ')';

or 

protected $_table = 'username_accounts';

or dyamically 

    $ci =& get_instance();     $ci->load->database();     echo $ci->db->dbprefix;

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