6.0.0-git
2024-03-28
Last Modified 2011-03-31 by Jan Schneider

H4 Conversion HowTo

Items that need to be converted...

Authentication

Remove AUTH_HANDLER - use Horde_Registry::appInit() 'authentication' option instead.
Remove $session_control - use Horde_Registry::appInit() 'session_control' option instead
Most static Horde_Auth:: functions moved to Horde_Registry::

Horde_Auth::getAuth() -> $registry->getAuth()
Horde_Auth::getBareAuth() -> $registry->getAuth('bare')
Horde_Auth::getAuthDomain() -> $registry->getAuth('domain')
Horde_Auth::getOriginalAuth() -> $registry->getAuth('original')

Autoloading

Convert files/libraries to be able to be autoloaded.
Remove require/include calls within the code.

CLI

Use Horde_Registry::appInit(), with the 'cli' option, to initialize CLI scripts.

Configuration files

Add $Id$ tag to all conf/*.php.dist and conf/*.xml files

Convert Base files

No more lib/base.php, lib/api.php, lib/version.php. Converted to lib/Application.php and lib/Api.php

Convert to PHP 5

TODO
instanceof instead of is_a()

CVS remnants

No need for $Horde$ in header comments.
Remove CVS directories.
Remove .cvsignore

Constants

Constants should be namespaced - preferably within the utility class (e.g. lib/App.php).

Documentation

Update documentation.

Database

All database abstraction is done through the Horde_Db library now.

Cheat sheet for converting PEAR::DB calls to Horde_Db calls:

PEAR DB Horde_Db
select()/query() execute()/insert()/update()/delete()
getAll() (w/DB_FETCHMODE_ORDERED) ??
getAll() (w/DB_FETCHMODE_ASSOC) selectAll()
getAssoc() selectAssoc()
getCol() selectValues()
getOne() selectValue()
getRow() selectOne()

select() return a statement object from the SQL query.

Error Handling

Don't use Horde::fatal() directly - throw an Exception and if uncaught, a fatal exception handler will be triggered.

Globals

Remove all use of globals within the application (use injector instead).

Images/Graphics

OLD:

$registry->getImageDir() . '/image.png';

NEW:

Horde_Themes::img('image.png');

Note that if you want to prevent using images from Horde itself and always use the current application, use the following:

Horde_Themes::img('image.png'), array('nohorde' => true));

Also note this policy change from H3:
"Do note that doing something like grabbing an image dir and then manually appending various image names to it is NOT supported in H4."

Generating <img> tags of non-static images, e.g. the script files from horde/services/images/ through Horde::img() is not supported anymore.

Injector Usage

Various Horde libraries now must be loaded via the injector.

Javascript

ALL javascript should be in js/. NO javscript (if at all possible) should be contained in scripts/templates.

Log handling

Log constants have changed: we no longer use the PEAR constants and instead use strings to indicate the severity.
Also note the function signature no longer requires the file name or line number.

OLD:

Horde::logMessage("Something broke", __FILE__, __LINE__, PEAR_LOG_ERR);

NEW:

Horde::logMessage("Something broke", 'ERR');

Mail library

PEAR's Mail library has been replaced by Horde_Mail.

MIME library

The MIME library has been rewritten - most calls to the library will probably need to be changed.

NLS/Language/Charset handling

Most/all language and/or charset handling has been moved to Horde_Registry. See http://bugs.horde.org/ticket/9124#c8.

Output buffering

Convert from Util::bufferOutput() -> Horde::startBuffer()

PEAR_Error

Remove PEAR_Error usage - convert to Exceptions.
Each application should define a APP_Exception library that extends Horde_Exception.

Prefs UI

No more lib/prefs.php - now uses Horde_Registry_Application calls.
Update config/prefs.php.dist to remove unneeded entries.

Sidebar integration

The sidebar menu is no longer in a separate frame. To integrate with all pages of your application, put the following code after your menu, e.g. at the bottom of templates/menu.inc, but before the notification output:

if (!Horde_Util::getFormData('ajaxui')) require HORDE_BASE . '/services/portal/sidebar.php';

Test script

No longer uses test.php - converted to lib/Test.php.

Themes

TODO

Translations

All translations and help files have to be encoded in UTF-8 now. Translation files have been renamed and moved to the locale/ directories. imp/po/de_DE.po is now in imp/locale/de/LC_MESSAGES/imp.po.

Url generation

Use Horde_Url:: instead of Horde_Util::addParameter()/Horde_Util::removeParameter().