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Is wordpress capable of having hierarchical taxonomy and hierarchical custom post types in one permalink ?

I would like to do the following:

tax-1/tax-2/cpt-1/cpt-1-post/cpt-2/cpt-2-post/

in other words:

continent/country/travelog/travelog-post/videos/video-post/

or in a real case where "a-day-at-the-beach" is the travelog post and "sand-in-my-trunks" is the video post:

europe/spain/travelog/a-day-at-the-beach/videos/sand-in-my-trunks/

I have 4 custom post types that would always be at the level of cpt-1 and 3 custom post types (videos, photos, sketches) that would always appear at the sub level of cpt-2.

When complete the site will have roughly 4000 posts in total.

I'm hoping there is a plugin or set of plugins to help achieve this, but so far I've not found that magic combination. If not, can this permalink structure be custom coded with url re-writes and REGEX ?

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  • Looks like you're trying to make parent/child relationship in 2 different post types. While it's not technically impossible, wordpress admin panel will ignore it. You'll need to create a custom admin screen for it. Have you successfully implemented this?
    – Mridul Aggarwal
    Dec 17, 2012 at 19:02
  • @MridulAggarwal I'm confused by your comment. Are you saying that the permalink I desire is not technically possible ? I have neither implemented the permalink structure nor created a custom admin screen.
    – timoto
    Dec 17, 2012 at 19:14
  • I'm trying to understand what you have already done & what you want to do. If you haven't implemented a custom screen, how can you make a post from 1 CPT a parent of another CPT? Technically it is possible but i'm trying to understand what you've achieved so far.
    – Mridul Aggarwal
    Dec 17, 2012 at 19:26
  • @MridulAggarwal I am able to create custom hierarchical taxonomy and custom post types, but not hierarchical custom post types. So I don't know how to make the proposed permalink that has both hierarchical taxonomy and hierarchical custom post types. At best I have been able to create tax-1/tax-2/cpt-1/cpt-1-post/ but with varying results depending on the use of plugins. Have you seen a working example such as this: tax-1/tax-2/cpt-1/cpt-1-post/cpt-2/cpt-2-post/ ?
    – timoto
    Dec 17, 2012 at 23:35
  • I haven't. Wordpress lacks simple ways when it comes to permalink structures. For this case, you'll need more than just permalink. First you'll need to provide a way to link cpt-1-post & cpt-2-post(you need a custom admin screen for it). Then you'll use add_rewrite_rule to add rules. In this function you have to make sure you don't rewrite it to both cpt-1-post & cpt-2-post.
    – Mridul Aggarwal
    Dec 18, 2012 at 3:53

1 Answer 1

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To cut a long story short the answer to the question is Yes.

In the end I was able to create: tax-1/tax-2/cpt-1/cpt-1-post/cpt-2/cpt-2-post/

and another structure: tax-1/tax-2/cpt-1/cpt-1-post/cpt-2/custom-field/cpt-2-post/

I used Types from http://wp-types.com/ to create the hierarchical custom taxonomy, the custom post types, custom fields, but most importantly the parent/child relationship between custom post types. That plugin saved a lot of time.

The next step was to do the URL re-writes using regular expressions.

    <?php


    // Add custom rewrite rules

    add_filter( 'rewrite_rules_array','my_insert_rewrite_rules' );

    // Add custom variable for WP_QUERY

    add_filter( 'query_vars','my_insert_query_vars' );

    // This hook is fired once WP, all plugins, and the theme are fully loaded and instantiated.

    add_action( 'wp_loaded','my_flush_rules' );

    // Flush rules for include custom rewrite rules

    function my_flush_rules(){
        $rules = get_option( 'rewrite_rules' );
        global $wp_rewrite;
        $wp_rewrite->flush_rules();
    }

    // Add custom rewrite rules

    function my_insert_rewrite_rules( $rules ){
        $newrules = array();  

        $location_list = get_terms("location",array("parent" => 0, "hide_empty" => 0));
        foreach($location_list as $location){
            $base_url = sprintf('index.php?taxonomy=%s&term=%s&child_term=$matches[1]&type=$matches[2]&type_title=$matches[3]&media_type=$matches[4]&media_maintitle=$matches[5]&media_title=$matches[6]','location',$location->slug);
            $newrules[$location->slug.'/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/?'] = $base_url;
            $base_url = sprintf('index.php?taxonomy=%s&term=%s&child_term=$matches[1]&type=$matches[2]&type_title=$matches[3]&media_type=$matches[4]&media_title=$matches[5]','location',$location->slug);        
            $newrules[$location->slug.'/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/?'] = $base_url;
            $base_url = sprintf('index.php?taxonomy=%s&term=%s&child_term=$matches[1]&type=$matches[2]&type_title=$matches[3]&media_type=$matches[4]','location',$location->slug);        
            $newrules[$location->slug.'/([^/]+)/([^/]+)/([^/]+)/([^/]+)/?'] = $base_url;
            $base_url = sprintf('index.php?taxonomy=%s&term=%s&child_term=$matches[1]&type=$matches[2]&type_title=$matches[3]','location',$location->slug);        
            $newrules[$location->slug.'/([^/]+)/([^/]+)/([^/]+)/?'] = $base_url;
            $base_url = sprintf('index.php?taxonomy=%s&term=%s&child_term=$matches[1]&type=$matches[2]','location',$location->slug);        
            $newrules[$location->slug.'/([^/]+)/([^/]+)/?'] = $base_url;
            $base_url = sprintf('index.php?taxonomy=%s&term=%s&child_term=$matches[1]','location',$location->slug);        
            $newrules[$location->slug.'/([^/]+)/?'] = $base_url;
        }

        return $newrules + $rules;
    }

    // Add custom variable for WP_QUERY

    function my_insert_query_vars( $vars ){                                                                                               
        array_push($vars, 'taxonomy');          
        array_push($vars, 'child_term');                   
        array_push($vars, 'type');                       
        array_push($vars, 'type_title');                           
        array_push($vars, 'media_type');                                
        array_push($vars, 'media_maintitle');                    
        array_push($vars, 'media_title'); 
        return $vars;
    }

    ?>

I'm not sure if the optimum REGEX rules have been created here, but I found I had to do this much to make sure re-directs were in place ensuring no potential for multiple URLs displaying the same content.

There is more to the answer than I've posted here, but I think there is a limit to the number of lines I can post.

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  • You can post up to 30.000 characters. So there is still room for detailed explanations. :)
    – fuxia ♦
    Jan 15, 2013 at 20:44

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