Override kernel classes

Friday 11 December 2009 1:04:18 am

Hi Frank,

usually the method is the following :

1. Create your kernel-override class in your extension, the class name obviously matching one of the kernel's
2. Run the following script from the eZ Publish root :

   php bin/php/ezpgenerateautoloads.php -o

3. Then run the "normal" autoload generation (same line as above, without he "-o" option).

No direct edition of the autolad files.

Have you tried this already ?
Let us know,

Nicolas

--
Nicolas Pastorino
Director Community - eZ
Member of the Community Project Board

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Friday 11 December 2009 2:58:11 am

Hi Nicolas and thank you for your quick reply!

I do not have shell access, but the server owner ran the commands for me - this is the output:

Still not working :-(

- - - - - -

php bin/php/ezpgenerateautoloads.php -o

Scanning for PHP-files.

Scan complete. Found 176 PHP files.

Searching for classes (tokenizing).

Class eZUserShopAccountHandler in file extension/myext/kernel/classes/shopaccounthandlers/ezusershopaccounthandler.php will override:
kernel/classes/shopaccounthandlers/ezusershopaccounthandler.php (autoload/ezp_kernel.php)

Class eZContentOperationCollection in file extension/myext/kernel/content/ezcontentoperationcollection.php will override:
kernel/content/ezcontentoperationcollection.php (autoload/ezp_kernel.php)
Found 37 classes, added 2 of them to the autoload array.

php bin/php/ezpgenerateautoloads.php

Scanning for PHP-files.

Scan complete. Found 176 PHP files.

Searching for classes (tokenizing).

Warning:
Class eZUserShopAccountHandler in file extension/myext/kernel/classes/shopaccounthandlers/ezusershopaccounthandler.php is already defined in:
kernel/classes/shopaccounthandlers/ezusershopaccounthandler.php (autoload/ezp_kernel.php)

This class was not added to the autoload array.
Warning:
Class eZContentOperationCollection in file extension/myext/kernel/content/ezcontentoperationcollection.php is already defined in:
kernel/content/ezcontentoperationcollection.php (autoload/ezp_kernel.php)
This class was not added to the autoload array.

Found 37 classes, added 35 of them to the autoload array.

PHP Warning: chmod(): Operation not permitted in /home/sites/XXX.no/www/kernel/private/classes/ezautoloadgenerator.php on line 253

Saturday 12 December 2009 3:32:31 am

Just a note: there are still a few places in eZP (esp. ez-approved extensions) where include_once and require_once are present, hardcoded to the php classes in the standard directories. You should take care about that when overriding the provided php classes...

Principal Consultant International Business
Member of the Community Project Board

Monday 21 December 2009 3:17:00 am

Kernel override capability is great but there are 2 issues though :

1. Does not work with datatypes (sometimes really annoying)
2. When setting EZP_AUTOLOAD_ALLOW_KERNEL_OVERRIDE in config.php, it does a require_once() statement of var/autoload/ezp_override.php without testing if it exists. So you can have a PHP Fatal Error if you just plan to make a kernel override...

Tuesday 22 December 2009 2:36:31 am

Done !

http://issues.ez.no/IssueView.php?Id=15982
http://issues.ez.no/IssueView.php?Id=15983 (with patch)

Tuesday 22 December 2009 9:48:35 am

And ... fixed!
Thanks Jerome for reporting, and Bertrand for fixing :)

--
Nicolas Pastorino
Director Community - eZ
Member of the Community Project Board

eZ Publish Community on twitter: http://twitter.com/ezcommunity

t : http://twitter.com/jeanvoye
G+ : http://plus.tl/jeanvoye

Friday 30 April 2010 3:02:39 am

Hi Walter

Unfortunately overriding modules is not currently possible :(

Friday 30 April 2010 4:07:09 am

Hi,

A little trick to Override a module in ez, (this is not very clean but it can be useful when you can not do this otherwise)

In the file module.ini, define:

[ModuleSettings]
# Important to initialize the variable
ModuleRepositories []
ModuleRepositories [] =extension / [costum_extension] / modules
ModuleRepositories [] =kernel
ModuleRepositories []=kernel / private / modules

PS: But we must override all of the views's module.

I hope it will be useful for someone;)

Abdelkader RHOUATI

Blog (french) : http://arhouati.com
----
Extension arh_jdebug : EzDebug using jquery

Friday 30 April 2010 10:41:24 am

@Jérôme, yes, every day we discovered new things about EZ :)

In fact we can do the same thing to override the datatype. On a project, I overloaded single relation object datatype in order to redirect the link browse to the destination defined in the class. and it work well.

to do it, edit file content.ini, and set the parameter :

[DataTypeSettings]
RepositoryDirectories []
RepositoryDirectories []=extension/[Costum Extension]/datatypes
RepositoryDirectories []=kernel/classes/datatypes

Regrads

Tks

Abdelkader RHOUATI

Blog (french) : http://arhouati.com
----
Extension arh_jdebug : EzDebug using jquery

Tuesday 25 January 2011 2:52:08 am

To override the default shop user handler (kernel/classes/shopaccounthandlers/ezusershopaccounthandler.php) you need to create settings/override/shopaccount.ini.append.php:

 <?php /* #?ini charset="utf-8"?

[HandlerSettings]
Repositories[]
Repositories[]=extension/your_extension/classes
Repositories[]=kernel/classes

*/ ?>

Then take a copy of kernel/classes/shopaccounthandlers/ezusershopaccounthandler.php to extension/your_extension/classes/shopaccounthandlers/ezusershopaccounthandler.php

Then run kernel override autorun. Easiest way to verify that it is working is just to echo something in the beginning of your custom ezusershopaccounthandler.php

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