The sfDimensionsPlugin ( http://trac.symfony-project.com/wiki/sfDimensionsPlugin )

Allows you to use different configurations in your application (for example, themes and culture).

However, it requires a few symfony core changes, which makes installation a little more difficult than traditional plugins - and upgrading the core can cause you to lose the changes, thus having to "reinstall".

The following pake tasks:

1. backs up the core files
2. copies the new files over
3. reverses the process (uninstall)

Note: remember to run uninstall before upgrading the symfony core file set.

Future development could include:

• Using diff / patch to install the changes instead of blindly copying the files

While the need for core changes to Symfony are rare, there are times when additional functionality (like this plugin provides) do require such changes (usually minimal).

Hopefully a more generic tool can be written at some point to manage generic patch sets.

In the meantime, this pake task can save some frustration.

<?php
/*EVOLUTION*/
 
pake_desc('install dimensions plugin (modifies core)');
pake_task('dimensions-install', 'project_exists');
 
pake_desc('uninstall dimensions plugin (unmodifies core)');
pake_task('dimensions-uninstall', 'project_exists');
 
 
function run_dimensions_install($task, $args) 
{
  global $sf_symfony_lib_dir, $sf_symfony_data_dir;
 
  $here = dirname(__FILE__);
  $home = "$here/../../../..";
  $backup_dir = $here . "/../dimension-backup";
  $dim_dir    = "$home/plugins/sfDimensionsPlugin";
 
  if (file_exists($backup_dir)) {
    pake_echo_action('plugin', "Failure: backup exists: $backup_dir");
    exit(1);
  }
 
  pake_echo_action('plugin', "Backing up files");
  mkdir($backup_dir);
  copy($sf_symfony_lib_dir . "/config/sfLoader.class.php", "$backup_dir/sfLoader.class.php");
  copy($sf_symfony_data_dir . "/config/constants.php",  "$backup_dir/constants.php");
  copy("$home/config/config.php",  "$backup_dir/config.php");
 
  pake_echo_action('plugin', "Modifying Core");
  copy("$dim_dir/lib/config/sfLoader.class.php", $sf_symfony_lib_dir . "/config/sfLoader.class.php");
  copy("$dim_dir/config/constants.php", $sf_symfony_data_dir . "/config/constants.php");
 
  pake_echo_action('plugin', "Dimensions installed");
}
 
function run_dimensions_uninstall($task, $args)
{
   global $sf_symfony_lib_dir, $sf_symfony_data_dir;
 
  $here = dirname(__FILE__);
  $home = "$here/../../../..";
  $backup_dir = $here . "/../dimension-backup";
  $dim_dir    = "$home/plugins/sfDimensionsPlugin";
 
  pake_echo_action('plugin', "restoring files");
 
  $time = time();
  copy("$home/config/config.php",  "$home/$time.config.php");
  copy("$backup_dir/config.php", "$home/config/config.php");
  copy("$backup_dir/sfLoader.class.php", $sf_symfony_lib_dir . "/config/sfLoader.class.php");
  copy("$backup_dir/constants.php", $sf_symfony_data_dir . "/config/constants.php");
 
  pake_echo_action('plugin', "removing backup directory and files");
  _recursive_remove_directory($backup_dir);
 
}