Table of Contents
Introduction
Front Controller design pattern allows you to stay in a single page and include the necessary files according to your actions.
The current actions can be broadly divided into two levels
- Module in which you are performing operation i.e. accessed by mod=<module prefix>
- Action that your are performing. i.e. accessed by act=<action prefix>
example http://localhost/sahana/index.php?mod=or&act=default
Overrides
There are mainly two types of overrides available
- Override that will be passed to the url e.g stream
- Overrides which can be included in the main.inc of the module i.e. Overriding with main.inc
Overriding with url
- Please refer stream
Overriding with main.inc
Following are the types of overrides that are available with main.inc
- Overriding html head (key: html_head)
- Overriding page header (key: header)
- Overriding main menu (key: mainmenu)
- Overriding login section (key: login)
- Overriding footer (key: footer)
To override any of the above sections all you need to do is create a function called shn_<module prefix>_<key mention above>
Example: Overriding HTML Head Totally
function shn_test_html_head()
{
?>
<html>
<head>
<title>This is very simple head without css even</title>
</head>
<?php
}
Example2: Just adding another javascript
function shn_test_html_head()
{
global $global;
include $global['approot']."/inc/lib_xhtml.inc";
$myjavascripts = array ('<script type="text/javascript" src="index.php?stream=text&mod=test&act=say_hello" ></script>',
'<script type="text/javascript" src="index.php?stream=text&mod=test&act=say_world"></script>');
shn_display_xhtml_head($myjavascripts);
}
