Views is a WordPress plugin that lets you display post relationships.
In our user guides, you can find more information on how to display child posts, related posts, brother pages, fields of parents and fields of grandparents.
When you ask for help or report issues, make sure to tell us the type of the relationship you are trying to build and the structure of your data.
Problem: I have a nested repeatable field group (RFG) structure inside a custom post type. I also have another child post type of that main custom post type. On the child post template, I would like to display information from the RFGs. I can display information from the main RFG, but not the nested RFGs.
Solution: Check to be sure the correct RFG type is selected in the View's Content Selection panel.
Problem: I have 3 custom post types - Artists, Books, and Works on Paper. I have two one-to-many (O2M) relationships: Artists-Books where Artist is parent and Book is child, and Artists-Works On Paper where Artist is parent and Work on Paper is child. I'm using the Favorites plugin to allow my site visitors to add favorite Books and favorite Works on Paper. In the list of favorite posts, I would like to display information about the related Artist.
Solution: The best way to handle this is to use the Favorites plugin's filters API to filter the favorites list HTML. You can use the Toolset Post Relationships API toolset_get_related_posts to get information from related posts in that filter callback:
/**
* Toolset Support
* Filter the Favorites list information to display related Artiste info
* Currently supports Livres and Oeuvres Sur Papiers post types for Favorites
* Extendable by adding a case statement for new post type / relationship slug
* https://toolset.com/forums/topic/find-related-custom-post-type/
*/
add_filter( 'favorites/list/listing/html', 'custom_favorites_listing_html', 10, 4 );
function custom_favorites_listing_html($html, $markup_template, $post_id, $list_options)
{
// relationship slugs per favorite post type
$post_type = get_post_type( $post_id );
switch($post_type) {
case "livre":
$rel_slug = "livre_artiste";
break;
case "oeuvre-sur-papier":
$rel_slug = "oeuvre-sur-papier-artiste";
break;
default:
return $html;
};
// Get related posts with Toolset post relationships API
$children_args = [
'query_by_role' => 'parent',
'role_to_return' => 'child'
];
$children = toolset_get_related_posts( $post_id, $rel_slug, $children_args);
// Build a string of related post titles, separated by a comma,
// and concatenate it into response HTML, then return it
$child_titles = [];
if( $children && count( $children ) > 0 ) {
foreach( $children as $child ){
$child_titles[]= get_the_title($child);
}
return $html . implode(',', $child_titles);
}
// in case no related posts are found, return the default HTML
return $html;
}
Problem: I would like to create a custom shortcode that displays the number of child posts for the current parent post. I'm referencing an older ticket but it does not seem to work as expected.
Solution: Instead of the _wpcf_belongs_slug_id postmeta key, you must use the new post relationships API with post relationships created in Types 3.0+. A custom shortcode solution is available.
