I have a custom post type, and in one of the custom meta-fields, I would like to present a drop-down list of the other (published) custom posts in order to link two custom posts.
Specifically, I have a Film type, and some Films are screened as double features with other films. Currently, I just have a field for the other film's post ID, and my template manually handles the URL linking for that. But it would be much more user friendly to offer a drop-down list with titles of previously published Films.
How would I do this?