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1. iyamdman
   Member
   Posted 8 months ago #

   I have two Custom Post types:

   The first one is called "Cars"

   "Cars" posts have the following Taxonomies:

   "Series Name" - Example: First Series, Collectors, Fast Ones
   "Series Year" - Example: 1967, 1990, 2005
   "Body Color" - Example: Blue, Red, Green

   The other post type is called "wheels"

   Each "Wheels" post has one Taxonomy:

   "Format" - Example:PR5, RL, RLRR5SP

   What I want is that, when I add a "Cars" post, there will be an admin box with a list of check boxes for all the different "wheels" taxonomy entries.

   I know how to make the Custom Posts, and the Custom Taxonomies, but I don't know how to do the above.

   Can anyone give me a clue as to how to do this, or if it is even possible?

2. Redefine
   Member
   Posted 8 months ago #

   Hey iyamdman,

   I assume you are talking about the checkboxes similar to the posts page with different categories?

   You need to link custom posts and register taxonomies (in functions.php)

   add_action( 'init', 'build_taxonomies', 0 );
   function build_taxonomies() {
       register_taxonomy( 'taxonomy-name', array('cars'), array( 'hierarchical' => true, 'label' => 'Series Name', 'query_var' => true, 'rewrite' => true ) );
   	register_taxonomy( 'taxonomy-year', array('cars'), array( 'hierarchical' => true, 'label' => 'Series Year', 'query_var' => true, 'rewrite' => true ) );
   	register_taxonomy( 'taxonomy-color', array('cars'), array( 'hierarchical' => true, 'label' => 'Body Color', 'query_var' => true, 'rewrite' => true ) );
   	register_taxonomy( 'taxonomy-format', array('wheels'), array( 'hierarchical' => true, 'label' => 'Format', 'query_var' => true, 'rewrite' => true ) );
   }

   If you want to reuse taxonomies across multiple custom posts, you can add the support by specifying the names of each post_type.

   For example: array('cars', 'wheels', 'page', 'post')

   register_taxonomy( 'taxonomy-format', array('wheels', 'cars'), array( 'hierarchical' => true, 'label' => 'Format', 'query_var' => true, 'rewrite' => true ) );

   The code above will display the taxonomy in both wheels and cars.

   Hope that helps, if I am a bit confusing I can explain in better detail. Just need to know exactly what you want to achieve.

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