Redmine

Problem

- configure a (on the fly, not saved) issue query, group by anything and have any totals displayed
- click on an issue in the resulting issue list
- go back to the list via the x of y link between the prev/next links

Both grouping and configured total values are now lost since these settings are not contained in the URL parameters of the link.

Solution

By adding :group_by and :t keys to Query#as_params, the query configuration is fully preserved (build_from_params already checks for those keys).

Patch courtesy of Planio