I'm fairly new to posting here and I'll try to keep it as clear as possible! Any guidance is greatly appreciated!
The Goal:
I am trying to create a Custom Post Type and a Taxonomy where I can upload posts inside the Taxonomy and have a URL structure like this: site-name.com/cpt-slug/taxonomy-slug/post-slu.
I also need to be able to have pagination on both site-name.com/cpt-slug/ and site-name.com/cpt-slug/taxonomy-slug
Currently:
I have studied a few other posts that have gotten me 99% of the way there! I just can't quite figure out how to finish it at this point. I have done most of what this answer has suggested and i will show my code below for clarity.
CPT registration
register_post_type( 'knowledge_base',
array(
'labels' => array(
'name' => __( 'Knowledge Base' ),
'singular_name' => __( 'Knowledge Base Post' )
),
'public' => true,
'has_archive' => true,
'menu_position' => 25,
'menu_icon' => 'dashicons-book',
'hierarchical' => true,
'supports' => array(
'title',
'editor',
'excerpt',
'page-attributes',
'thumbnail'
),
'taxonomies' => array('kb_topics'),
'rewrite' => array(
'slug' => 'kb/%taxonomy_name%',
'with_front' => false
),
)
);
Custom taxonomy registration
register_taxonomy(
'kb_topics',
'knowledge_base',
array(
'label' => 'Categories',
'hierarchical' => true,
'rewrite' => array(
'slug' => 'kb',
'with_front' => false
),
)
);
Tell WordPress how to interpret my knowledge base URL structure:
function add_rewrite_rules( $rules ) {
$new = array();
$new['kb/([^/]+)/(.+)/?$'] = 'index.php?knowledge_base=$matches[2]';
$new['kb/(.+)/?$'] = 'index.php?kb_topics=$matches[1]';
return array_merge( $new, $rules ); // Ensure our rules come first
}
add_filter( 'rewrite_rules_array', 'add_rewrite_rules' );
Handle the %taxonomy_name% URL placeholder
function filter_post_type_link( $link, $post ) {
if ( $post->post_type == 'knowledge_base' ) {
if ( $cats = get_the_terms( $post->ID, 'kb_topics' ) ) {
$link = str_replace( '%taxonomy_name%', current( $cats )->slug, $link );
}
}
return $link;
}
add_filter( 'post_type_link', 'filter_post_type_link', 10, 2 );
The problem:
Overall the post I referenced makes a ton of sense, I feel I understand whats going on here and everything was good until I tried setting up Pagination on the page site-name.com/kb.
This page was working great. I was able to show all the posts per category and I was able to go from here and click any post or Taxonomy and have the URL structure mentioned above. However whenever I try to go to the next page or third page I either get a 404 error or I get redirected to a post in my CPT.
As an example site-name.com/kb/page/2 always goes to the same post that is a post in my CPT and site-name.com/kb/page/3 always goes to 404. After some digging around some more I found another post that seemed to have a very promising answer and I still feel it could be the right answer I just can't get it to work. Admittedly I don't have a lot of experience with rewrites and this may be where the issue is.
Here is my version of this user's suggestion:
function fix_kb_category_pagination( $wp_rewrite ) {
unset($wp_rewrite->rules['kb/([^/]+)/page/?([0-9]{1,})/?$']);
$wp_rewrite->rules = array(
'kb/?$' => $wp_rewrite->index . '?post_type=knowledge_base',
'kb/page/?([0-9]{1,})/?$' => $wp_rewrite->index . '?post_type=knowledge_base&paged=' . $wp_rewrite->preg_index( 1 ),
'kb/([^/]+)/page/?([0-9]{1,})/?$' => $wp_rewrite->index . '?kb_topics=' . $wp_rewrite->preg_index( 1 ) . '&paged=' . $wp_rewrite->preg_index( 2 ),
) + $wp_rewrite->rules;
}
add_action( 'generate_rewrite_rules', 'fix_kb_category_pagination' );
I have tested the pagination and my page template by creating a different page with a slug of /kb-test/ and everything works perfectly. So this only happens on /kb/ for some reason.
From what I understand from the posts I mentioned above, WordPress has created rewrites based on the CPT and Taxonomy I set up and so its not able to go to /kb/page/, but I have tried many times now tweaking the code I have here trying to get it to recognize /kb/page/ but to no avail.
Thank you ahead of time to anyone who takes the time to look through this and respond. I really think I must be super close but just cant quite get the last bit alone. Thanks everyone!
**
UPDATE
**
First off thank you for everyone helping me format my question, much appreciated! I wanted to write a quick update to help answer this question for future viewers if I can.
After working on this more I now realize I was very close with the code above. One thing I had to do was remove the rewrite_rules_array hook. I assume because the rules were conflicting with the rules I have in the generate_rewrite_rules hook.
So that's great! However I still have one remaining issue i'm working on. For some reason when I go to site-name.com/kb/page/2/ it still goes to a post that is in the /kb/ CPT. Every other page seems to work great. site-name.com/kb/page/3/ and so on, all work correctly. I even deleted the post that /page/2/ is going to. It still goes to that same URL but now just shows 404.
I'll keep working on this and update when I figure it out. In the mean time if anyone has any tips to help with this i'd appreciate any help!
**
FINAL UPDATE
**
Turns out the last little issue of /page/2/ was a caching issue and all is good now. I will answer my question so we can close it out. Hopefully this helps anyone in the future with this same issue!
