Article_fields::up PHP Method

    function up()
    {
        $CI =& get_instance();
        $CI->load->dbforge();
        if (!$CI->db->table_exists('article_fields')) {
            $fields = array('article_field_id' => array('type' => 'INT', 'constraint' => 11, 'unsigned' => TRUE, 'auto_increment' => TRUE));
            $CI->dbforge->add_field($fields);
            $CI->dbforge->add_key('article_field_id', TRUE);
            if ($CI->dbforge->create_table('article_fields')) {
                if ($CI->migrate->verbose) {
                    $this->msg .= "Added article_fields table...<br />";
                }
            } else {
                $this->msg = 'ERROR: Adding article_fields Table.';
            }
        }
        return $this->msg;
    }