This problem also concerns my question regarding the multiple grouping inside the JQGrid using the <jqgrid:grid> tag. But as I later found out here in the changelog of JQGrid, there might be issues with the grouping feature of JQGrid version 3.8.0. I’ve tried using the scripting format of JQGrid presented here
So in theory, I would download JQGrid 4.0 and use it in the concerned project.
The question is how can I use the downloaded JQGrid 4.0 files to my project.
In the case that you can’t find a Grails plugin that uses the version of jqGrid that you need, you could go the more direct route of downloading jqGrid.
Just put the js file in the webapps/js folder of your grails project and then include the source on whatever gsp pages you need. You wouldn’t get whatever ease of use you get from the Grails plugin, but if you absolutely need the newest version of jqGrid without waiting for a Grails plugin update, then there ya go.