I have updated my site running Joomla 3.9.1 and K2 2.9.1 and after doing so the images within the articles no longer pop out, they instead opening within the window causing the use of the back button to return to the article. I have also setup a test site that reverted back to K2 2.9 and the same issues are occurring within the articles.

On my production site I have now reverted back to v2.8 and the lightbox pop out of the image works without issue.

I am including two samples of what it looks like within v2.8 and v2.9.1.

I have jquery 1.12.4 enabled and loading.

Ideas? Suggestions?

Unless you have a JS conflict/error, simply make sure your item.php override is up to date. The modal now requires a data attribute instead of a class/rel combo.

See here: github.com/getk2/k2/blob/master/components/com_k2/templates/default/item.php#L202

Hi Fotis
I have the same problem of no lightbox on main image of K2 items. Joomla 3.9.0 / K 2.9.0
"make sure your item.php override is up to date" ?

Everything seems to be up to date in my site.

What can we do more ?

Hi Django.

Change this line in you item.php override:

<a class="modal" rel="{handler: 'image'}" href="<?php echo $this->item->imageXLarge; ?>" title="<?php echo JText::_('K2_CLICK_TO_PREVIEW_IMAGE'); ?>">

For this:

<a data-k2-modal="image" href="<?php echo $this->item->imageXLarge; ?>" title="<?php echo JText::_('K2_CLICK_TO_PREVIEW_IMAGE'); ?>">

Thanks René, but in which item.php ? I don't find this code in any of them (com_k2/model, or /templates/default, or views/item/tmpl/ ...).

See my response here: www.joomlaworks.net/forum/k2-en/50528-no-more-lightbox-on-main-image#172889

And please avoid cross posting.

Hi,
I made this change in the item.php override, but it didn't work at first. Then I disabled the "Minify javascript" function in the RSSEO plugin, and it worked.
It doesn't work without any of these 2 modifications.

Problem solved for me.

Thanks for your help.

The plugin you mention probably breaks JS code when doing any minifying. Avoid such plugins.

RSJoomla makes VERY good components, but indeed, anyway, with any optimisation (minify / compression JS and CSS) in plugins, components, or templates, we have always to be very careful, and test each function, 1 by 1.

That's why I mentioned "avoid such pluginS" (plural). In general, JS minifying is 99,9% of the times just breaking JS overall.