How to build in 'maintenance mode' in Codeigniter?

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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

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不要未来只要你来

2020-12-15 00:28

Here my solution, simply, clean and effectively for all urls calls and SEO respects:

Add this variables in: application/config/config.php

$config['maintenance_mode'] = TRUE;
$config['maintenance_ips'] = array('0.0.0.0', '1.1.1.1', '2.2.2.2');

Add this conditional at the end of: application/config/routes.php

if(!in_array($_SERVER['REMOTE_ADDR'], $this->config->item('maintenance_ips')) && $this->config->item('maintenance_mode')) {
    $route['default_controller'] = "your_controller/maintenance";
    $route['(:any)'] = "your_controller/maintenance";";
}

Create method maintenance in: application/controllers/your_controller.php

function maintenance() {
     $this->output->set_status_header('503'); 
     $this->load->view('maintenance_view');
}

Create view: application/views/maintenance_view.php

<!DOCTYPE html>
<html>
   <head>
      <title>Maintenance</title>
   </head>
   <body>
      <p>We apologize but our site is currently undergoing maintenance at this time.</p>
      <p>Please check back later.</p>
   </body>
</html>

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轻奢々

2020-12-15 00:34

Here my solution, works fine for me:

The below will call maintanance.php immediately, so you can go ahead and break your CI code without the world seeing it.

Also allow you to add you own ip address so that you can still access the site for testing etc.

In index.php add at top:

$maintenance = false; ## set to true to enable

if ($maintenance)
{
    if (isset( $_SERVER['REMOTE_ADDR']) and $_SERVER['REMOTE_ADDR'] == 'your_ip')
    {
        ##do nothing
    } else
    {

        error_reporting(E_ALL);
        ini_set('display_errors', 1); ## to debug your maintenance view

        require_once 'maintenance.php'; ## call view
        return;
        exit();

    }
}

Add file Maintanance.php in same folder as index.php (or update path above):

<!DOCTYPE html>

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Maintenance</title>

        <style>
            body {
                width:500px;
                margin:0 auto;
                text-align: center;
                color:blue;
            }
        </style>
    </head>

    <body>

        <img src="images/home_page_logo.png">

        <h1><p>Sorry for the inconvenience while we are upgrading. </p>
            <p>Please revisit shortly</p>
        </h1>
        <div></div>

        <img src="images/under-maintenance.gif"   >

    </body>
</html>
<?php
header('HTTP/1.1 503 Service Temporarily Unavailable');
header('Status: 503 Service Temporarily Unavailable');
header('Retry-After: 3600');
?>

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野趣味

2020-12-15 00:36
Extend the CI_Controller by putting a new file in your core directory called MY_Controller.

In this file's constructor, do something like this:
```
public function __construct()
{
    parent::__construct();

    if($this->config->item('maintenance_mode') == TRUE) {
        $this->load->view('maintenance_view');
        die();
    }
}
```
Let all controllers in your app inherit from that class.
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南方客

2020-12-15 00:43
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.
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挽巷

2020-12-15 00:43

Here is what I've come up with for creating a maintenance mode.

Enable Hooks in the config.php file
Create an error_maintenance.php page under errors folder
Create a Hook called maintenance
In the hooks config setup your hooks call to run on post_controller

application/errors/error_maintenance.php

<!DOCTYPE html>
<html>
  <head>
    <title>Maintenance</title>
    <style>Style your page</style>
  </head>
  <body>
    <p>We apologize but our site is currently undergoing maintenance at this time.</p>
    <p>Please check back later.</p>
  </body>
</html>

application/hooks/maintenance.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class maintenance
{
   var $CI;    
   public function maintenance()
   {
      $this->CI =& get_instance();
      $this->CI->load->config("config_maintenance");    
      if(config_item("maintenance"))
      {
          $_error =& load_class('Exceptions', 'core');
          echo $_error->show_error("", "", 'error_maintenance', 200);
          exit;
      }
   }
}

application/config/hooks.php

$hook['post_controller'][] = array(
   'class' => 'maintenance',
   'function' => 'maintenance',
   'filename' => 'maintenance.php',
   'filepath' => 'hooks',
   'params' => array()
);

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清酒与你

2020-12-15 00:47

this one works well,

application/views/vw_maintenance.php

    <!DOCTYPE html>
    <html>
      <head>
        <title>Maintenance</title>
        <style>Style your page</style>
      </head>
      <body>
        <p>We apologize but our site is currently undergoing maintenance at this time.</p>
        <p>Please check back later.</p>
      </body>
    </html>
<?php exit(); ?>

the exit() function is very importantn don forget to put it at the bottom, it will prevent all pages from being displayed.

application/libraries/maintenance.php

class Maintenance{

    private $CI;

    public function __construct() {

        $this->CI =& get_instance();

        // flag on and off
        $this->flag( $this->CI->uri->segment(1) );

        // get the flag status
        $check_maintenance = $this->CI->db->select('flag_mode')->where(array('setting_name' => 'maintenance'))->get('tbl_settings')->result();

        //display view if true
        if($check_maintenance[0]->flag_mode == '1')
            $this->CI->load->view('vw_maintenance');


    }

    private function flag($command){


        $this->CI->db->where('setting_name', 'evolving');

        switch($command){

            case "activate":                
                $this->CI->db->update('tbl_settings', array('flag_mode' => 1) ); 
            break;

            case "deactivate":
                $this->CI->db->update('tbl_settings', array('flag_mode' => 0) );
                redirect(site_url('/'));
            break;

        }
    }

}

autoload the library so it will be check every page load.

now you can activate and deactivate maintenance mode by typing or

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