Problem: I have a many-to-many post relationship that uses intermediary posts. On the single child post page, I would like to display a custom field from the intermediary post using the Types field shortcode, but it doesn't seem to be working correctly.
Solution: Since it's a many-to-many relationship, you may have more than one intermediary post related to the child post (or parent post). Since more than one result can be returned, you must use a View of the intermediary post type with a post relationship filter in order to determine which intermediary post you want to display. Then place the field shortcode in the loop of the intermediary post View. If the field is in the intermediary post, no item attribute is necessary. If the field is in the parent post, you must use the @relationship-slug.parent syntax in the item attribute.
Problem: I have a post relationship configured to allow 12 related child posts. I have added 11 related child posts, but now I cannot add the 12th related post.
Solution: Check the trash for previously related child posts. Restore the post temporarily and disconnect it from the parent post, or permanently delete the child post. Then you can add a 12th related post.
Problem:
Automatically selecting the post to add a RFG to, in front-end form
Solution:
you can use the Toolset Form's hook "cred_save_data" and to set/connect the parent post, you can use the post-relationship API function: toolset_connect_posts()
