Some kind of grouping would be useful

[Jako]

At the moment I am searching for a solution for this problem:

I have a list of addresses managed with collections and would like to group them by the first zip digit in the grid. Additional difficulty: they should be sortable by drag&drop in each group.

See: http://dev.sencha.com/deploy/ext-3.4.0/examples/grid/grouping.html but that example has a local store. This uses a remote store and could maybe be extended: http://dev.sencha.com/deploy/ext-3.4.0/examples/grid/totals-hybrid.html