In Sharepoint 2010, I have a document library, with a mixture of managed metadata, choice, date/time and text fields.
I am using the new metadata navigation settings in 2010 to display a navigation bar to the left of my document library which allows the user to filter the document library on those fields easily, by selecting metadata items from a tree and using "Key Field" filter boxes.
My problem is that when adding Key Fields to the document library, I can only seem to select certain field types (eg managed metadata, date/time and choice), but I can't select any plain old Text fields.
It would be great to let the user filter the document library on a text field (for example, I have a field called Document Reference Number which is free text), eg by typing some text into a box and clicking a button. But I can't find any obvious way to do this.
Does anyone have any ideas?