Hello,
Thanks for the feedback! I’m glad you enjoy ACF Extended!
The bidirectional setting allow to set a 2 way relationship. That means you can retrieve the relationship value from both objects.
For example, in your case, you can set a relationship between Company <> Podcast. If you set Company A <> Podcast C, then you can retrieve “Company A” from “Podcast C” and “Podcast C” from “Company A”.
In some way, the native WordPress logic between a Post Type and a Taxonomy is a bidirectional relationship too. Since you can retrieve Terms from a Post, and retrieve Posts from a Term.
The bidirectional setting is compatible with the ACF Taxonomy Field since you can have a relationship between two taxonomies. For example: Taxonomy Continents <> Taxonomy Countries. Or a relationship between User <> Taxonomy.
In your case, what you’re asking is a triangular relationship, which is more complex. There’s no way to achieve it directly from the UI, you’ll have to add some code. A logic that would work in your case:
Setup a bidirectional relationship between Company <> Podcast. Then set the values (Company A <> Podcast C for example).
You can then use the set_object_terms hook, so everytime a Industry Term is added to a Company you replicate the said term using wp_set_object_terms() on the related Podcast (that you’ll retrieve using the bidirectional relationship from the Company). And vice-versa when a Industry Term is added for Podcast (if you want to).
Hope it helps!
Have a nice day.
Regards.
