Why not use a hierarchical taxonomy? I can’t think of a better use for hierarchy than what you are describing. As far as your perceived disadvantages: Admin needs to select all applicable classification parts when associating to a plant (eg; a family, a genus and a species) Rhamnaceae – Ziziphus — Ziziphus Jujuba If you … Read more
I managed to work it out. Seems like the filters only work when wrapped in an ‘admin_init’ action. My final code to add an admin column for the custom taxonomy meta ‘front_page’ to the custom taxonomy ‘shopp_department’ in my themes’ functions.php // Register the column function department_add_dynamic_hooks() { $taxonomy = ‘shopp_department’; add_filter( ‘manage_’ . $taxonomy … Read more
I came up with this with the add_rewrite_rule(): add_rewrite_rule(‘^recipes-with-([^/]*)/?’,’index.php?ingredient=$matches[1]’,’top’); I did some testing for the above, and it works well when you use it for one taxonomy at time. Here is the code from my functions.php: add_action( ‘init’, ‘create_ingredient_tax’ ); function create_ingredient_tax() { register_taxonomy( ‘ingredient’, ‘post’, array( ‘label’ => ‘Ingredient’, ‘hierarchical’ => true ), array( … Read more
The only really interesting (and very important) part of the 3rd query is this: ‘project_location_children’, ‘a:7:{i:22;a:1:{i:0;i:23;}…etc…}}’ The a:n:{i:n; etc } stuff is a serialized PHP array. WordPress – for some historical reason – keeps track of term children in one option entry per taxonomy term. The painful thing is, that a lot of people don’t … Read more
There was a lot of hard coding going on in a number of these answers that I felt like may have disadvantages further down the road. Here is an approach that takes the existing tax_query, and swaps out the “include_children” argument. As an aside, I did not have any luck setting “include_children” to false in … Read more
I think this is possible, but you will need to keep an eye on the order of the rewrite rules. To help you with this I recommend a plugin I wrote to analyze the rewrite rules (soon available in the repository, but you can download a pre-release). First of all, these rules are quite generic, … Read more
Just as a follow up for anybody looking to add their own meta boxes to the menu screen, you can do it by using ‘nav-menus’ for the post type: add_action( ‘admin_init’, ‘my_add_meta_box’ ); function my_add_meta_box() { add_meta_box( ‘custom-meta-box’, __(‘My meta box’), ‘my_nav_menu_item_link_meta_box’, ‘nav-menus’, ‘side’, ‘default’ ); } function my_nav_menu_item_link_meta_box() { ?> <div class=”custom-meta-box” id=”custom-meta-box”> Your … Read more
Use get_ancestors() and count the returned array: that’s the number of ancestors a term has. /** * Count a term’s ancestors. * * @param int $term_id * @param string $taxonomy * @return int */ function wpse_57512_count_ancestors( $term_id = FALSE, $taxonomy = FALSE ) { if ( FALSE === $term_id and ! empty ( get_queried_object()->taxonomy ) … Read more
You can add taxonomy metadata, similar to add_post_meta and some examples of doing so include, Tutorial Walk-Through http://en.bainternet.info/2011/custom-taxonomies-extra-fields Taxonomy Metadata Class (improved version of above) http://en.bainternet.info/2012/wordpress-taxonomies-extra-fields-the-easy-way I have personally used this class myself which was also authored from a reputable member and moderator here at WPSE -> Bainternet, it did what it said on the … Read more
It will definately not show in custom_1 because you probably must have defined it for custom_2.However, you can define a custom submenu with link same as that of the taxonomy in which the parent link is that of custom_2. Following is what i mean. add_submenu_page( ‘edit.php?post_type=custom_1’, ‘Page Title’, ‘Menu Title’, ‘add_users’,’edit-tags.php?taxonomy=custom_taxonomy’, ” );