One of the things that smaller sites who don't have a fully redundant setup or a relatively minimal deployment mechanism need to do when doing some kind of maintenance is put up an "Under Maintenance" page. That or there was some massive problem and you need to just shut down access to the site while you fix the problem. With that in mind I have written a very simple example that allows you to create a maintenance page that is configurable and requires no changes to your existing site. This example uses Zend_Application, but all of the code can be used in a pure Zend_Controller application by adding the plugin however you normally add plugins.
First let's set up a maintenance controller.
MaintenanceController.php
class MaintenanceController extends Zend_Controller_Action
{
public function indexAction(){}
}
and a view.
scripts/maintenance/index.phtml
<h1> We are currently under maintenance</h1>
<h2> Please check back soon</h2>
Now the fun part. Create a simple plugin that is called during routeShutdown() and redirect all requests to the maintenance page.
class Esc_Application_Plugin_Maintenance extends Zend_Controller_Plugin_Abstract
{
public function routeShutdown(Zend_Controller_Request_Abstract $request)
{
$request->setActionName('index');
$request->setModuleName('default');
$request->setControllerName('maintenance');
}
}
One of the nice things about this method is that if you have any parts of your application that you want to keep open you can implement the code to handle that in here.
The last thing you need to do is add this plugin to your application configuration. If you are using Zend_Config_Ini you can simply do this:
resources.frontController.plugins[] = "Esc_Application_Plugin_Maintenance"
Whenever you need to put your site into maintenance mode all you need to do is add that line and it will be done as soon as you save the file.