Hello @fotis and K2 devs,

I want to use K2 as a content source in the Yootheme Pro builder.  YOOtheme
I am in contact with the Zoolanders team to think about the feasibility of this development. They are interested in the subject, but need a relay in your teams for some information.
Who would be the person available for this?

I think this project would be a great asset for the attractiveness of K2 because Yootheme has become a major player in terms of visual builder for Joomla.

I am at your disposal for any question on the subject.
Thanks in advance,
Phil
 

Hi everyone,

I went ahead and put together a draft for this possible integration to find out a first major issue. YOOtheme Pro Builder relies on the onLoadTemplate joomla standard event to determine the context of the current view, turns out K2 doesn't fire such event.

If this is confirmed, I would like to know about the reasons and possible fixes. If is not, would appreciate some support on the matter.

Thanks!

What YTP does to allow for the builder templating is register a new _path in the Joomla View Classes dynamically. This path is actually a stream wrapper, that simply introduces this new onLoadTemplate event in Joomla. This is because Joomla itself does not trigger an even when a view is loading a template in its loadTemplateLayout call in View classes.

Unfortunately K2, in the display method of its views, calls addPath a number of times after the YTP stream wrapper is registered (which happens in the Joomla onBeforeDisplay event), and therefore the stream wrapper (and the new event) is not called, since Joomla takes the first path in the list.

Possible solutions:

1. Move the addPath calls before Joomla calls the onBeforeDisplay event, which means not in the View display method
2. Trigger this custom onLoadTemplate event yourselves after the various addPath calls in your views.

Hi, colleague of Miljan (ZOOlanders) here.

Basically what YTP does is custom triggering that even with 2 parameters, the view object and the template file.

here's the specifis:

$app = Factory::getApplication();
$app->triggerEvent('onLoadTemplate', [$view, $tpl]);

where
$view is the View object (children of the JView class)
$tpl is the name of the layout used, without path or extension (example "links" or "content"). They take it form the $view-->getLayout() method.

The full code of their beforeDisplay listener that does this is

public static function beforeDisplay(Config $config, $event)
{
if ($config('app.isAdmin')) {
return;
}

$view = $event->getArgument('subject');

// loader callback for template event
$loader = function ($path) use ($view) {
// Clone view to avoid mutations on the original view
$copy = clone $view;
$copy->set('_output', null);
$copy->set('context', basename($copy->get('_basePath')) . ".{$copy->getName()}");
$tpl = substr(basename($path, '.php'), strlen($copy->getLayout()) + 1) ?: null;

var_dump('TPL: ' . $tpl);
var_dump('Class: ' . get_class($copy));

$app = Factory::getApplication();
$app->triggerEvent('onLoadTemplate', [$copy, $tpl]);

return $copy->get('_output');
};

// register the stream wrapper
if (!in_array('views', stream_get_wrappers())) {
stream_wrapper_register('views', StreamWrapper::class);
}

// add loader using a stream reference
// check if path is available (StackIdeas com_payplan)
if ($path = $view->get('_path')) {
array_unshift($path, 'views://' . StreamWrapper::setObject($loader));
$view->set('_path', $path);
}
}

Hope this helps!

Did a PR so you have less work ahead of you :)

github.com/getk2/k2/pull/551

Thanks @fotis and @Daniele.
So I can upgrade K2 with that release.

@daniele, put on the other hand, what do I need to do to get YTP to use K2 as a content source?

Thank you @fotis and @daniele.

There are some last issues we are solving out, but anyhow a custom plugin or child theme configuration would be necessary to make the workflow possible. Will let you know when we have something solid, hopefully soon.

Hi Tom, thank you for your offer.

Now that the initial limitations have been solved, I have further tested the possibilities of this integration, and I am positive about it possibility. In fact I went ahead and put together a draft that already allows to set a Template for the main K2 Views and map the values of it Items and Categories. I was even able to add support to basic Extra Fields types.

If there is enough interest we could give this project a real chance, so please DM me on Discord (miljan#0690) anyone who is willing to participate in anyway and lets take it from there.

I am glad to announce a K2 Source for YOOtheme Pro is now available as a free addon, for anyone interested here is the link to the project.

github.com/joolanders/ytp-source-k2

@Fotis, there is a PR pending that would make this integration even better, is there anything we can do to get it merged?

It turns out the K2 Module Item helper has many more limitations and some apparent issues, we opted for creating our custom helper instead. The PR is not necessary anymore, the K2 Source updates are up, and this thread can be closed.

Hi Tom, you are very welcome, thanks to Phill as well for sponsoring it :)

The right place to report issues or do feature request is here - github.com/joolanders/ytp-source-k2/issues

This extension for Yootheme is a real pleasure to use!
We should now manage to make it more known. @Miljan, maybe it's possible to share this extension, with the other Zoolanders extensions, on the Yootheme directory? yootheme.com/support/extensions

Hi Phill! We already requested such listing, but is up to YOOtheme when will be included, although is confirmed will be.