Edit Field on List Page (Multiple Records)

I would like to update a field across multiple table rows from the list page. I saw this link: http://xlinesoft.com/phprunner/docs/update_multiple_records.htm

This is exactly what I need except I need the update value to be selected from a dropdown list in which I would like place on the list page.
At first I was going to add a view of the same table and create a relationship with then update the rows as child records, but I still need the ability to search and filter through my table records.
Thoughts?