Feature Request: Override REL

Hi ibeedug.

Thanks for using NextGEN Gallery ColorBoxer, and for your kind words!

This is quite a tricky one, and I’ll definitely look into integrating this feature in a future version of the plugin. However, it’s no simple task to override NextGEN’s built-in functionality just by adding an extra shortcode attribute. Some significant modifications would need to be made to NextGEN itself.

There is a much simpler approach however, whereby we could replace the dynamic rel attribute with a static value. This would achieve the functionality you’re after – grouping all images from separate galleries on a page in a single ColorBox lightbox instance – and without having to go through old posts editing shortcodes.

To do this, simply navigate to Plugins –> Editor –> NextGEN Gallery ColorBoxer –> nextgen-gallery-colorboxer/nextgen-gallery-colorboxer.php, and near the bottom…

Replace this:

if (($nggcb_nextgen_options['thumbEffect'] != 'custom') ||
($nggcb_nextgen_options['thumbCode'] != 'class=\"mycolorbox\" rel=\"%GALLERY_NAME%\"')) {	

	// if nextgen's effects settings are accidentally changed while colorboxer is activated
	// update colorbox integration and show notification message

	$nggcb_nextgen_options['thumbEffect'] = 'custom'; // insert field or update value in array
	$nggcb_nextgen_options['thumbCode'] = 'class=\"mycolorbox\" rel=\"%GALLERY_NAME%\"'; // insert field or update value in array
	update_option('ngg_options', $nggcb_nextgen_options); // update option array

	add_action('admin_notices', 'nggcb_please_deactivate_colorboxer');

}

With this:

if (($nggcb_nextgen_options['thumbEffect'] != 'custom') ||
($nggcb_nextgen_options['thumbCode'] != 'class=\"mycolorbox\" rel=\"show_all\"')) {	

	// if nextgen's effects settings are accidentally changed while colorboxer is activated
	// update colorbox integration and show notification message

	$nggcb_nextgen_options['thumbEffect'] = 'custom'; // insert field or update value in array
	$nggcb_nextgen_options['thumbCode'] = 'class=\"mycolorbox\" rel=\"show_all\"'; // insert field or update value in array
	update_option('ngg_options', $nggcb_nextgen_options); // update option array

	add_action('admin_notices', 'nggcb_please_deactivate_colorboxer');

}

Click “Update File” when you’re done, refresh the admin, and your rel tags will now all read rel=”show_all” (instead of set_1,2,3 etc), instructing ColorBox to group all images across separate galleries in a single lightbox.

Hope this helps!

Cheers,
Mark.