Maintenance Mode

Problem

You are currently reworking the page/field/template/module structure of your site
and have a local db dump of the live site on your system but you don’t want the
user to make changes in the meantime. A restore from local back to live would
otherwise overwrite the user’s changes.

Solution

Add this on top of your /site/templates/admin.php

// check if the user is logged in and if they are not a super user
if ($user->isLoggedIn() && $config->maintenance === true && !$user->isSuperuser()) {
	// logout the user
	$session->logout();
	// spit out an error message via session, so it still appears after the redirect
	$session->error('Database currently in maintenance - logged out');
	// redirect to the login page
	$session->redirect($config->urls->admin);
}

In your /site/config.php you add a config value maintenance and change it back
to false if you’re done maintaining.

$config->maintenance = true;

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Resources