Hello, everyone.
I have a Custom Post Type Called Courses (for example, one of the courses is called Elementary Fist Aid), which in turn has a custom field called Course Abbreviation (EFA).
I have another CPT called Certificate in which I display a front end form which has a custom field called Course. This is filled by a Post Object field type and it uses the title of the CPT Courses.
I would like to add the Abbreviation to that select field from the Course Abbreviation custom field.
The acf/fields/post_object/result filter https://www.advancedcustomfields.com/resources/acf-fields-post_object-result/ lets you alter the value displayed for each post.
Perfect. Thank you very much Sir!
