Yii: Creating a Demo Site Without Replicating the Code Base - php

Question

I need to set up a demo site for users to try a web app before signing up. The demo would be based on production code, however, it would require minor code changes: connection to a demo database, automatic creation/login of a new guest account for each user, etc.
The obvious solution is to replicate my code base as a second demo website and edit as necessary. Keeping the demo code in sync with production code is easy enough by adding a branch in subversion. I'm less than thrilled, however, at the prospect of having to do two updates on my server (production and then demo) every time I push code from development to production.
Initially I thought I might be able to replicate the website through a module. It's unclear if this is possible, however.
Is there a mechanic in Yii to execute an altered version of a website (config file and selected controllers)?

Answer 1

Never do before, so just an idea
solution with few files in other dir
create a separate a demo dir and map it on your demo URL
In this dir put this index.php (may be your .htaccess too)
<?php
$yii=_PRODUCTION_PATH_.'/framework/yii.php';
$config_prod=_PRODUCTION_PATH_.'/protected/config/main.php';
$config_demo=dirname(__FILE__).'/demo_main.php';
require_once($yii);
$config = CMap::mergeArray($config_prod,$config_demo);
Yii::createWebApplication($config)->run();
the demo_main.php override the classes (user, db) to manage a better demo experience:
<?php
return array(
'basePath'=>_PRODUCTION_DIR_.DIRECTORY_SEPARATOR.'..',
'components'=>array(
'user' => array(
// here you override the user class with a DEMO only user
'class'=>'DemoUser',
)
),
solution with all files of prduction site in a different dir
Here follows the index.php in root dir
<?php
$yii='../framework/yii.php';
$configMain = include dirname(__FILE__).'/protected/config/main.php';
$configProd = include dirname(__FILE__).'/protected/config/production.php';
$configDemo = include dirname(__FILE__) . '/protected/config/demo.php';
require_once($yii);
// for the demo version
// instead of the comment can be an *if* or any solution to manage 2 configs
//$config = CMap::mergeArray($configMain,$configProd);
$config = CMap::mergeArray($configMain,$configDemo);
Yii::createWebApplication($config)->run();
demo.php is analogue to "demo_main.php" overridig classes and configs for the demo version of the site.

Answer 2

The testdrive demo app is configured for this - after you install, note the separate index-test.php, and protected/config/test.php.
Unlike #IvanButtinoni's suggestion, you'll need to access index-test.php, instead of index.php, so you may need to modify your .htaccess if you're using clean URLs to allow access to index-test.php.
When I do this, I usually write a custom init in the base controller.php:
public function init() {
// use test layout if using test config
if (isset(Yii::app()->params['test'])) {
$this->layout='//layouts/test';
}
parent::init();
}
Obviously, I have a test parameter in my test.php . . .
The only difference in my two layouts is that one sets the background color to be a bright yellow, just so it's very clear you're on a test site.

Answer 3

If I have understood well (according to the comment answers to original post) then There are several ways. Here is a link that I think can help great deal. It helped me set up and may be will help you!
In Yii 2 it will be inherently supported
http://www.yiiframework.com/wiki/33/