Hi Florian,
Thanks! For my immediate purposes, I think just doing the isLoaded() check
will probably suffice, as I don't actually have any need to check versions
at the moment. But I agree with your suggestion, extending the 'requires'
section of extension.json does seem like it would be very helpful and
extension developer-friendly, and that's a great idea.
I've opened a Phabricator task here
<https://phabricator.wikimedia.org/T117277>, but feel free to tweak it if
I've described something poorly or didn't tag it correctly - I've never
actually created a task in Phabricator before.
Thanks!
--
Jason Ji
jason.y.ji(a)gmail.com
On Fri, Oct 30, 2015 at 2:06 PM, Florian Schmidt <
florian.schmidt.welzow(a)t-online.de> wrote:
You can, in your php extension code, so not inside the
extension.json,
check, if another extension is installed or not:
ExtensionRegistry::getInstance()->isLoaded( 'ExtensionName' );
There's also a "requires" section, which is parsed in extension.json, but
it currently only supports MediaWiki core versions (it behaves like
composer's requires section). I'm wondering, if dependencies like yours are
widely used and if extending the requires section support to extensions
would help to solve your problem (with that you could specify a specific
version, a range of version or any version above a specific one, or all
versions, too, so your VIKIJS_VERSION wouldn't be needed anymore, too).
Would you like to open a task in phabricator to discuss this?
Best,
Florian
-----Ursprüngliche Nachricht-----
Von: Wikitech-l [mailto:wikitech-l-bounces@lists.wikimedia.org] Im
Auftrag von Jason Ji
Gesendet: Freitag, 30. Oktober 2015 17:00
An: wikitech-l(a)lists.wikimedia.org
Betreff: [Wikitech-l] MW 1.25 new extension registration - PHP constants
Hi there,
I'm the primary developer of the VIKI
<https://www.mediawiki.org/wiki/Extension:VIKI> extension and its two
companion extensions, VikiSemanticTitle <
https://www.mediawiki.org/wiki/Extension:VikiSemanticTitle> and
VikiTitleIcon <https://www.mediawiki.org/wiki/Extension:VikiTitleIcon>.
I thought I'd take a look at converting these three extensions to the new
extension registration <
https://www.mediawiki.org/wiki/Manual:Extension_registration> format, but
I ran into a problem. According to the documentation, the new extension
registration does not support PHP constants <
https://www.mediawiki.org/wiki/Manual:Extension_registration/Limitations>gt;.
I use a PHP constant to declare an explicit dependency on VIKI for
VikiSemanticTitle and VikiTitleIcon. In my VIKI.php file, I declare:
*define( 'VIKIJS_VERSION', '1.3');*
And then in VikiSemanticTitle and VikiTitleIcon, I have a check that looks
something like:
*if( !defined( 'VIKIJS_VERSION' ) ) {*
* die('Error: The extension VikiSemanticTitle requires VIKI to be
installed first.');*
*}*
(As an aside, I also happen to use VIKIJS_VERSION as my version number,
which I increment as I release new versions. But that's not as important.)
Because the new extension registration format doesn't support PHP
constants, this no longer works, and I can't run VikiSemanticTitle and
VikiTitleIcon alongside VIKI - the VIKIJS_VERSION constant is seemingly no
longer defined, so any page load dies with the error message above.
If I can't use PHP constants anymore, does anyone have a better
recommendation for declaring explicit dependencies? Or should I just avoid
migrating the VIKI extensions to the new registration format?
Thanks,
--
Jason Ji
jason.y.ji(a)gmail.com
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