Recently I had a client who wanted to show only "Approved" documents (i.e. documents that had been through the built-in Approval workflow) on a site's home page. When I tried to set up the filter, setting the [Workflow Status] field to Approved, the filter returned no results. As it turns out, workflow status is stored as a numeric value. The values are as follows:
In Progress - 2
Complete - 5
Canceled - 15
Approved - 16
Rejected - 17
The view filter needs to look like this:
I owe this solution completely to David's blog, and thought it was important enough to pass along. Thanks, David!