You’ll need to edit application/config/profiler.php

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/*
| -------------------------------------------------------------------------
| Profiler Sections
| -------------------------------------------------------------------------
| This file lets you determine whether or not various sections of Profiler
| data are displayed when the Profiler is enabled.
| Please see the user guide for info:
|
|	http://codeigniter.com/user_guide/general/profiling.html
|
*/

$config['benchmarks'] 		= TRUE;
$config['get'] 				= TRUE;
$config['memory_usage'] 	= TRUE;
$config['post'] 			= TRUE;
$config['uri_string']		= TRUE;
$config['controller_info']	= TRUE;
$config['queries'] 			= TRUE;
$config['http_headers'] 	= TRUE;
$config['config'] 			= TRUE;

/* End of file profiler.php */
/* Location: ./application/config/profiler.php */

I previously used a modified version of MY_Profiler from dragffy.com. I modified it to add a button to the top of the page that would show or hide the profiler when needed and could also hide the profiler button totally.

The screen grabs show hidden/visible states with benchmark section visible.

Here is the code for anyone interested – credit to dragffy.com for original inspiration

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * Requires jquery in head of view
 *
 */
class MY_Profiler extends CI_Profiler {

 	function __construct($config = array())
 	{
 		parent::__construct($config);
 	}

	// --------------------------------------------------------------------

	/**
	 * Run the Profiler
	 *
	 * @access	private
	 * @return	string
	 */
	function run()
	{
		$output = <<<ENDJS
<script type="text/javascript" language="javascript">
// < ![CDATA[
    $(function() {
		var profiler_html = $('#codeigniter_profiler').clone();
		var profiler_bar_html = $('#profiler_bar').clone();

        $('#codeigniter_profiler, #profiler_bar').remove();

		$('body').prepend(profiler_bar_html);
		$('body').append(profiler_html);

		$('#codeigniter_profiler').hide();
		$('#profiler_btn').click(function(){
			$('#codeigniter_profiler').toggle();

			if($('#codeigniter_profiler').is(':visible')) {
				$('#profiler_btn').text('HIDE PROFILER');
			} else {
				$('#profiler_btn').text('SHOW PROFILER');
			}

			return false;
		});
		$('#profiler_close_btn').click(function(){
			$('#profiler_bar, #codeigniter_profiler').hide();
			return false;
		});
    });
// ]]>
</script>
ENDJS;

		$output .= "<div id='profiler_bar' style='background-color: green; width: 150px; height: 20px; padding: 2px; position: absolute; top: 0; left: 20px; text-align: center; color: #FFF; font-family: Verdana, Geneva, sans-serif; filter: alpha(opacity=30); -moz-opacity: 0.30; opacity: 0.30;'><a href='#' id='profiler_btn' style='color: #FFF; text-decoration: none;'>SHOW PROFILER</a><a href='#' id='profiler_close_btn' style='color: #FFF; text-decoration: none; margin-left:10px'>X</a></div>";

		$output .= "<div id='codeigniter_profiler' style='clear:both;background-color:#fff;padding:10px;'>";
		$fields_displayed = 0;

		foreach ($this->_available_sections as $section)
		{
			if ($this->_compile_{$section} !== FALSE)
			{
				$func = "_compile_{$section}";
				$output .= $this->{$func}();
				$fields_displayed++;
			}
		}

		if ($fields_displayed == 0)
		{
			$output .= '<p style="border:1px solid #5a0099;padding:10px;margin:20px 0;background-color:#eee">'.$this->CI->lang->line('profiler_no_profiles').'</p>';
		}

		$output .= '</div>';

		return $output;
	}

}

// END MY_Profiler class

/* End of file MY_Profiler.php */
/* Location: ./application/libraries/MY_Profiler.php */

Uncommented

/* */
Block of code
/* */

Commented

/* *\/
Block of code
/* */

Quick and simple time saver

//  CI 2.0 Compatibility
if(!class_exists('CI_Model')) { class CI_Model extends Model {} }

class MY_Model extends CI_Model
{
}

For example, in the team, each developer connects to a common development server (called “localhost”). There is a password protected remote staging server so clients can access it in parallel to the live site (eg. http://client.domain.com). The live site also has a public domain (eg. www.domain.com).  So we need 3 sets of “base_url” and “database” settings.

Step 1:

In “/application/config/config.php“, define the URL of the development and staging servers using static variables:

define('DEV_SERVER_NAME', 'localhost');
define('STAGING_SERVER_NAME', 'http://client.domain.com');

Step 2:

Then add a switch and define the base url for each case:

switch ($_SERVER['SERVER_NAME']) {
case DEV_SERVER_NAME:
  // development server
  $config['base_url']    = "http://localhost/";
  break;
case STAGING_SERVER_NAME:
  // staging server
  $config['base_url']    = "http://client.domain.com";
  break;
default:
  // live server
  $config['base_url']    = "http://www.domain.com";
  break;
}

Step 3:

In “/application/config/database.php” add a switch to define the “active_group” for each case:

switch ($_SERVER['SERVER_NAME']) {
case DEV_SERVER_NAME:
  // development server
  $active_group = "local";
  break;
case STAGING_SERVER_NAME:
  // staging server
  $active_group = "staging";
  break;
default:
  // live server
  $active_group = "live";
  break;
}

Step 4:

Then add a set of settings for each active group:

$db['local']['hostname'] = "localhost";
$db['local']['username'] = "DEV_USERNAME";
$db['local']['password'] = "DEV_PASSWORD";
$db['local']['database'] = "DEV_DATABASENAME";
$db['local']['dbdriver'] = "mysql";
$db['local']['dbprefix'] = "";
$db['local']['pconnect'] = FALSE;
$db['local']['db_debug'] = TRUE;
$db['local']['cache_on'] = FALSE;
$db['local']['cachedir'] = "";
$db['local']['char_set'] = "utf8";
$db['local']['dbcollat'] = "utf8_general_ci";

$db['staging']['hostname'] = "localhost";
$db['staging']['username'] = "STG_USERNAME";
$db['staging']['password'] = "STG_PASSWORD";
$db['staging']['database'] = "STG_DATABASENAME";
$db['staging']['dbdriver'] = "mysql";
$db['staging']['dbprefix'] = "";
$db['staging']['pconnect'] = FALSE;
$db['staging']['db_debug'] = TRUE;
$db['staging']['cache_on'] = FALSE;
$db['staging']['cachedir'] = "";
$db['staging']['char_set'] = "utf8";
$db['staging']['dbcollat'] = "utf8_general_ci";

$db['live']['hostname'] = "localhost";
$db['live']['username'] = "LIVE_USERNAME";
$db['live']['password'] = "LIVE_PASSWORD";
$db['live']['database'] = "LIVE_DATABASENAME";
$db['live']['dbdriver'] = "mysql";
$db['live']['dbprefix'] = "";
$db['live']['pconnect'] = FALSE;
$db['live']['db_debug'] = TRUE;
$db['live']['cache_on'] = FALSE;
$db['live']['cachedir'] = "";
$db['live']['char_set'] = "utf8";
$db['live']['dbcollat'] = "utf8_general_ci";

Step 1:

Add this to the config file (eg. httpd.conf) and then reload Apache

LoadModule deflate_module modules/mod_deflate.so

Step 2:

Then add this to the .htaccess file (to automatically compress javascript, css, html and xml):

<Module mod_deflate.c>
AddOutputFilterByType DEFLATE application/x-javascript text/css text/html text/xml
</IfModule>

Not really a webby thing that could save you time but yesterday we finished a 2 phase build.

Phase 1: A user backend as such, consisting of a 7 part entry form including ajax image cropping, lots of custom validation and conditional form elements.

Phase 2: The frontend, uses Infinite scroll to create a single page of user profiles, there is also a ajax rating system.

Codeigniter allowed use to build the site in 6 weeks, with 3 solid weeks dev on the forms. All the JS is jQuery based.

Check it out for yourself healthy life awards

The previous method I used meant having to add every real file or directory to the .htaccess to allow them to be accessed. The updated way checks if the requested file/directory exists and if need rewrites to the index.php.

If you need to protect more directories separate them with | i.e. application|modules

RewriteEngine On
RewriteRule ^(application) - [F,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php/$0 [PT,L]

$meta = array (
			'meta_title' 			=> 'title here',
			'meta_keywords' 		=> 'keywords here',
			'meta_description' 		=> 'description here',
			'meta_robots' 			=> 'all',
			'extra_headers' 		=> '
				    <script src="http://www.google.com/jsapi" type="text/javascript"></script>
				    <script type="text/javascript">
				     	<!--
				     	google.load("jquery", "1.3.2");
				     	-->
				    </script>'
		);

		$data = array();
		// add any data

		// merge meta and data
		$data = array_merge($data,$meta);

		// load view with data
		$this->load->view('pages/home', $data);

The extra header allows adding additional JS and CSS to the specific view

In your view add the following head code

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title><?php if(isset($meta_title)) echo $meta_title; ?></title>
    <meta name="keywords" content="<?php if(isset($meta_keywords)) echo $meta_keywords; ?>" />
    <meta name="description" content="<?php if(isset($meta_description)) echo $meta_description; ?>" />
    <meta name="robots" content="<?php if(isset($meta_robots)) echo $meta_robots; ?>" />

    <?php if(isset($extra_headers)) echo $extra_headers; ?>
</head>

/*
|--------------------------------------------------------------------------
| Debug
|--------------------------------------------------------------------------
*/
$config['debug']	= TRUE;

in the constructor of every controller I add

$this->output->enable_profiler($this->config->item('debug'));

Now all I have to do is change the value in the application config to enable/disable profiling globally

• The main site
• Backend user dashboard
• Backend user admin

All the main site pages were available via top level URL’s, nothing new there with the standard codeigniter routing

http://example.com/about

http://example.com/join

these simply route to

/application/controller/about.php
/application/controller/join.php

The backend dashboard needed to appear to be in a ‘dashboard’ directory like so

http://example.com/dashboard/events

these route to

/application/controller/events.php

and finally there was a admin section within the dashboard section and the URL’s looked like so

http://example.com/dashboard/admin/events/add

http://example.com/dashboard/admin/events/delete

these routed to

/application/controller/admin_events.php

the admin_ was required to prevent the events controller conflicting but I didn’t want admin_events
to be part of the URL.

So to allow the directory based URL’s and remove the requirement to show the admin_ in the URL to call the right controller, a little work in the /application/config/routes.php was required.

$route['^dashboard/admin/(.+)$'] = "admin_$1";
$route['^dashboard/(.+)$'] = "$1";