Display Custom Post Type in Custom Taxonomy URL

Question

I have created a custom post type with two custom taxonomies, which will eventually be used to filter the results in the custom post type. The problem I am having is that I would like the URL to read:

site-url/custom-post-type/custom-taxonomy

I've tried using some of the suggestions for people with similar problems on here, but I cannot get it working in this instance. This is the code I have at the moment, I've stripped it back as the attempts to get this working were in vain:

//Custom Post Types

add_action( 'init', 'create_post_type' );
function create_post_type() {
register_post_type( 'listing',
    array(
        'labels' => array(
            'name' => __( 'Listings' ),
            'singular_name' => __( 'Listing' )
        ),
    'public' => true,
    'has_archive' => true,
    'show_ui' => true,
    'capability_type' => 'post',
    'hierarchical' => false,
    'rewrite' => array( 'slug' => 'directory', 'with_front' => false ),
    'query_var' => false,
    'supports' => array( 'title', 'editor' )
    )
);
}

//Region Taxonomies

function region_taxonomy() {  
register_taxonomy(  
'region',  
'listing',  
array(  
    'hierarchical' => true,  
    'label' => 'Regions',  
    'query_var' => true,  
    'rewrite' => array('slug' => 'region', 'with_front' => true )  
)  
);  
}  

add_action( 'init', 'region_taxonomy' );

//Qualifications Taxonomies
function qualification_taxonomy() {  
register_taxonomy(
'qualification',  
'listing',  
array(  
    'hierarchical' => true,  
    'label' => 'Qualifications',  
    'query_var' => true,  
    'rewrite' => array('slug' => 'qualification' )  
)  
);  
}

Currently this produces:

site-url/region/ or /qualification/

Would be great if someone can help me out with this, wasted hours going round in circles!

Answer 1

You can use WordPress' ability to accept custom rewrite rules to get this done. You can add the following to your functions file, or create a plugin (recommended).

function url_rewrites_wpanswers() {
    add_rewrite_rule('/custom-post-type-slug/([^/]*)?$','index.php?post_type=custom-post-type-name&custom-taxonomy-name=$matches[1]', 'top'); //lets you use /posttype/customtaxterm
}
add_action('init','url_rewrites_wpanswers');

You would have to add a line for each since otherwise yoursite.com/something1/something2 would end up pointing to:

yoursite.com/index.php?post_type=something1&custom-taxonomy-name=something2

Keep in mind, with the functionality that you are requesting there can be conflicts with your permalinks if they are set to /post-type/post-name

You can read and learn more here: http://codex.wordpress.org/Rewrite_API/add_rewrite_rule