I am creating a document library. I've made a custom content type of "document" and a taxonomy for document categories. I've added the categories as a field in the document view. I want to display the document list, and at the top, have a dropdown menu where you can choose a category, and then have the view update to show you just the documents in that category.
I know that you can create a filter and then "expose" that filter to the user, but when I do that with this example, it makes a text entry box, not a dropdown box.