How to build in 'maintenance mode' in Codeigniter?

Question

I\'m using latest codeigniter and I need to create a flag (ideally in the config) when turned to \'true\', all pages display a \'maintenance mode\' message instead of execut

Answer 1

how about this :

1. create auto-loaded libraries which always check maintenance flag on your database.
2. create a module for controlling your application maintenance flag.
3. create a module for redirecting when maintenance mode is on

auto-loaded libraries can contain something like this :

class Maintenance_mode {
    function __construct(){
        $CI =& get_instance();
        $check_maintenance = $CI->db->select('flag_mode')->get('tbl_settings')->result();
        if($check_maintenance[0]->flag_mode == '1') 
            redirect(site_url('maintenance_mode_controller'));
    }
}

next step is to create a controller for maintenance page.