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 two post types in a one-to-many relationship. I would like to create a custom search View of the child post type, filtering by distance based on an address field in the parent post type, and include other filters based on custom fields in the child post type.
Solution: A View of post type A cannot filter by fields in post type B, so you would have to copy the parent address field into the child posts automatically using custom code, then filter by the address field in the child post type.
Problem: I have a one-to-many post relationship between two custom post types. In the template for the child post type, I would like to display "Next" and "Previous" links to paginate between the sibling posts.
Solution: Use a custom shortcode like this example that implements the post relationships API to create pagination links:
// https://toolset.com/forums/topic/next-and-previous-sibling-posts-in-a-one-to-many-post-relationship/
// get a link to the next or previous sibling post in child post content template
// example: [tssupp-next-prev-child current="[wpv-post-id]" step="1" relslug="book-chapter"][/tssupp-next-prev-child]
// current: current post id, step: 1 for next or -1 for previous, relslug: slug of the post relationship
function tssupp_next_prev_child($atts) {
$a = shortcode_atts( array(
'current' => 0,
'step' => '1',
'relslug' => '',
), $atts );
$link = '';
// get all child posts
$relationship_slug = $a['relslug'];
$current_child_id = $a['current'];
$parent_id = toolset_get_related_post( $current_child_id, $relationship_slug );
$sibling_args = array(
'query_by_role'=>'parent',
'limit'=>1000,
'role_to_return'=>'child',
'orderby'=>'title'
);
$siblings = toolset_get_related_posts( $parent_id, $relationship_slug, $sibling_args );
// loop over child posts and get index of the current post
foreach($siblings as $i=>$sibling) {
if( $sibling == $current_child_id ) {
break;
}
}
// increment or decrement index for next or previous sibling
$i += $a['step'];
// create link to next/previous sibling
if(isset($siblings[$i])){
$perm = get_the_permalink( $siblings[$i] );
$title = get_the_title( $siblings[$i] );
$link .= $a['step']=='1' ? "Next: " : "Previous: ";
$link .= "<a href='" . $perm . "'>" . $title . "</a>";
}
// output the link, or empty string if not set
return $link;
}
add_shortcode( 'tssupp-next-prev-child', 'tssupp_next_prev_child' );
You'll use the shortcode like this to generate a "Next" link (if necessary):
