Problem: I have a one-to-many post relationship set up between two custom post types. In a View of the child posts, I would like to display information from the parent post.
Solution:
In the Blocks View editor, you can display related post information by following the documentation linked below.
In the legacy Views editor, you can use the Post Selection tab in the Fields and Views popup to select the related post you want to display. See the screenshots in the replies below for more information.
Problem: When displaying a View of related posts in an M2M relationship, I would like to display custom field values from the intermediary post type (relationship), but the Types field shortcodes do not appear to be working correctly.
Solution: Be sure the Types field shortcodes use the proper item attribute syntax @relationship-slug.intermediary.