You can call https://codex.wordpress.org/Function_Reference/get_ancestors within your template. It’ll return an array of ancestors to your current post and you can use the length of the array to see how deep you are in your hierarchy. Use it at the top of your template file to set a variable $post_depth and use that to adjust your … Read more
Do you need to be able to have/assign a parent post? If yes, then use hierarchical, if not then don’t. Hierarchical post types allow you to do one way post to post relations of the type 1:many, which is useful sometimes. E.g. pages, documentation, etc. Also keep in mind that a post can have a … Read more
There is a more generic function: it’s called get_ancestors() and it’s found in wp-includes/taxonomy.php
To me the most logical would be to have a “Book” custom post type, and then all the attributes of the books (Author, Collection, Genre, etc.) would be custom taxonomies. Then for your URLs you could use some custom URL rewrite method to get what you want.
If you have: register_post_type( ‘my_custom_post_type’, $args ); And you need a custom page to displays all entries from this custom post type, you have to create: archive-my_custom_post_type.php. But if you don’t need a custom page, wordpress will use archive.php to display you custom post type archive. If you only need to customize the entry page, … Read more
As name hints wp_list_pages() is intended for use with pages. As in “a page page”. It uses get_pages() internally, which has post_type argument that defaults to page. I am not sure at all this is supposed to work for non-pages, but you can try to pass your custom post type as that post_type argument.
The wp_list_pages() function will generate a hierarchical list of pages for you.
You could try out Scribu’s plugin, i believe this addresses the very problem you’re describing which has been reported on Trac a handful of times(but closed/deleted). Category Checklist Tree by scribu http://wordpress.org/extend/plugins/category-checklist-tree/ Related tickets: http://core.trac.wordpress.org/ticket/14723 http://core.trac.wordpress.org/ticket/10982 Hope that helps.. 🙂
Custom Taxonomies: Multiple Hierarchical Permailnks For A Single Post + Prev/Next Links
If you see doc for wp_list_categories in codex, you’ll se that it accepts a include param, that should contain a comma separed list of categorys ids. So if you change your function get_terms_by_post_type creating the function get_terms_id_by_post_type to retrieve only the term ids, just like: function get_terms_id_by_post_type( $taxonomies, $post_types ) { global $wpdb; $query = … Read more