I'm looking for the Ext.ux.ToolbarDroppable plugin which allow to drag/drop column onto a toolbar for multisort as we can see in the following multi sort example :
How to use it in Sencha architect (version 2.2.2) ?
Here is the code :
https://gist.github.com/gsouf/5625682
You have to create a new toolbar in Architect. Then you have to override this toolbar with the code i gave (think to replace the two first lines).
Finally add the toolbar to a grid (not into a panel, think to ad it to the grid, because i use .up('grid') in the code).