Permalink problems with custom post type and custom taxonomy

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Question 1 Permalink structure

I trying to implement the right url/permalink structure for my site, but I can't get it to work.

I have the following setup:

Custom post type: training

  register_post_type( 'training',
    array(
        'labels' => array(
            'name' => __( 'Trainingen' ),
            'singular_name' => __( 'Training' ),
            'all_items'           => __( 'Alle trainingen' ),
            'view_item'           => __( 'Bekijk training' ),
            'add_new_item'        => __( 'Nieuwe training' ),
            'add_new'             => __( 'Nieuwe training' )
        ),
        'public' => true,
        'has_archive' => true,
        'hierarchical' => false,
        'rewrite' => array('slug' => 'our-training', 'with_front' => false),
        'show_in_rest' => true
        )
    );

**Custom taxonomy : training-category**

    $args = array(
        "label" => ( "training category"),
        "labels" => $labels,
        "rewrite" => array( 'slug' => 'training-category', 'with_front' => true, ),
        "show_admin_column" => true,
        "hierarchical" => false,
        "has_archive" => true,
        "show_ui" => true
        );
    register_taxonomy( "training_category", array( "event", "post", "training", "employee"), $args );

The permalink structure I want to establish:

our-training/training-category-1/training-name-1
our-training/training-category-2/training-name-2
our-training/training-category-1/training-name-3

what I do get is:

our-training/training-name-1
our-training/training-name-2
our-training/training-name-3

So the custom taxonomy is not inserted correctly in the permalink.

(I am also using Yoast breadcrumbs and have set the taxonomy to show for the training cpt to: training-category (my custom tax).)

Any tips on how I can get the desired permalink structure?

Question 2 - Redirect

Secondly I use facetwp for filtering so I need to redirect the category archive to a facetwp archive page. Redirect I want to establish (simplyfied):

our-training/training-category-1

must redirect to:

our-training?cat=training-category-1

How can I do this the best way?

Any pointers in the right direction will be highly appreciated!

Question 1 Permalink structure

I trying to implement the right url/permalink structure for my site, but I can't get it to work.

I have the following setup:

Custom post type: training

  register_post_type( 'training',
    array(
        'labels' => array(
            'name' => __( 'Trainingen' ),
            'singular_name' => __( 'Training' ),
            'all_items'           => __( 'Alle trainingen' ),
            'view_item'           => __( 'Bekijk training' ),
            'add_new_item'        => __( 'Nieuwe training' ),
            'add_new'             => __( 'Nieuwe training' )
        ),
        'public' => true,
        'has_archive' => true,
        'hierarchical' => false,
        'rewrite' => array('slug' => 'our-training', 'with_front' => false),
        'show_in_rest' => true
        )
    );

**Custom taxonomy : training-category**

    $args = array(
        "label" => ( "training category"),
        "labels" => $labels,
        "rewrite" => array( 'slug' => 'training-category', 'with_front' => true, ),
        "show_admin_column" => true,
        "hierarchical" => false,
        "has_archive" => true,
        "show_ui" => true
        );
    register_taxonomy( "training_category", array( "event", "post", "training", "employee"), $args );

The permalink structure I want to establish:

our-training/training-category-1/training-name-1
our-training/training-category-2/training-name-2
our-training/training-category-1/training-name-3

what I do get is:

our-training/training-name-1
our-training/training-name-2
our-training/training-name-3

So the custom taxonomy is not inserted correctly in the permalink.

(I am also using Yoast breadcrumbs and have set the taxonomy to show for the training cpt to: training-category (my custom tax).)

Any tips on how I can get the desired permalink structure?

Question 2 - Redirect

Secondly I use facetwp for filtering so I need to redirect the category archive to a facetwp archive page. Redirect I want to establish (simplyfied):

our-training/training-category-1

must redirect to:

our-training?cat=training-category-1

How can I do this the best way?

Any pointers in the right direction will be highly appreciated!

• custom-post-types
• custom-taxonomy
• permalinks
• custom-post-type-archives

Share Improve this question asked Jul 8, 2021 at 10:04 thegirlinthecafethegirlinthecafe 5611 silver badge99 bronze badges 2

• 1 Set the with_front key to TRUE in your CPT arguments. That should help with question 1 – Nathan Powell Commented Jul 8, 2021 at 10:46
• Thanks a lot Nathan, that seems to work. – thegirlinthecafe Commented Jul 10, 2021 at 7:27

Add a comment  | 

1 Answer 1

Sorted by: Reset to default 1

There was a problem with archive page and pagination in the original answer. Therefore, instead of changing the "rewrite" => ['slug' => 'our-training/%training-category%'] in register_post_type() as I suggested earlier, add the following rewrite rules and change the links created for CPT.

The rules will handle such addresses:

• display single training post with pagination support

/our-training/training-category-1/training-name/
/our-training/training-category-1/training-name/2/

• display training posts assigned to training-category-1 (uncomment first rewrite rule) note: this is query for taxonomy term, not cpt, so the first available template from the list will be used: taxonomy-training_category.php > taxonomy.php > archive.php

/our-training/training-category-1/
/our-training/training-category-1/page/2/

Default rules will handle:

• display all training posts (archive)

/our-training/

• display all posts (any type, "event", "employee", etc.) assigned to training-category-1

/training-category/training-category-1/

This code worked for me.

add_action( 'init', 'se391612_cpt_permalink', 20 );
add_filter( 'post_type_link', 'se391612_term_in_cpt_link', 20, 4 );

function se391612_cpt_permalink()
{
    //
    // CPT posts from custom taxonomy term (term archive)
    //add_rewrite_rule(
    //    'our-training/([^/]+)(?:/page/?([0-9]+))?/?$', 
    //    'index.php?post_type=training&training_category=$matches[1]&paged=$matches[2]',
    //    'top'
    //);    
    //
    // single post with pagination 
    add_rewrite_rule(
        'our-training/([^/]+)/([^/]+)(?:/([0-9]+))?/?$', 
        'index.php?post_type=training&training=$matches[2]&page=$matches[3]',
        'top'
    );
}

function se391612_term_in_cpt_link( $post_link, $post, $leavename, $sample )
{
    if ( ! $post instanceof \WP_Post || 'training' != $post->post_type)
        return $post_link;
    $new_link = $post_link;
    $all_terms = wp_get_post_terms( $post->ID, 'training_category', [
        'hide_empty' => '0',
        'fields' => 'slugs',
        'orderby' => 'term_id',
    ] );
    if ( !is_array($all_terms) || 0 == count($all_terms) )
        return $post_link;

    $term = array_shift($all_terms) . '/';
    $new_link = str_replace('our-training/', 'our-training/'.$term, $new_link);

    return $new_link;
}

Important note:
If you uncomment the first add_rewrite_rule() to support /our-training/training-category-1 permalink format, an address collision will occur. For WP there is no difference between these addresses, how it interprets them depends on the order of rewrite rules.

/our-training/training-category-1   // all "training" post from category "training-category-1"
/our-training/some-training-name    // single "training" post

However, if you would like both address types to work and you know that there will be only several categories, you can add these categories in the rules (manually or automatically).

---

Reference:
register_post_type()
wp_get_post_terms()
post_type_link filter

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