404 for a custom taxonomy?

Why do I get 404 for my custom taxonomy?

add_action('init', 'custom_taxonomy_flush_rewrite');
function custom_taxonomy_flush_rewrite()
global $wp_rewrite;
$wp_rewrite->flush_rules();


add_action('init', 'create_publication_categories');
function create_publication_categories()
$args = array(
'label' => __('Categories'),
'has_archive' => true,
'hierarchical' => true,
'rewrite' => array(
'slug' => 'topics',
'with_front' => false
),
);
$postTypes = array(
'publication'
);
$taxonomy = 'publication';
register_taxonomy($taxonomy, $postTypes, $args);



So I have the template called taxonomy-publication.php, but I still get 404.

taxonomy-publication.php

I have reset the permalink following this. And other answers such as this and this.

But I still get 404. Any ideas what I have missed?

1 Answer
1

You use the same slug publication for custom taxonomy and custom post type. Slug should be unique.

publication

Another thing (not related with 404) is the flush_rules. As you can read here flush on the init hook is bad idea.

flush_rules

init

Important:

init

activation

deactivation

Example

Flush rules on theme activation:

add_action( 'after_switch_theme', 'custom_taxonomy_flush_rewrite' );
function custom_taxonomy_flush_rewrite()
global $wp_rewrite;
$wp_rewrite->flush_rules();



flush on the init hook is bad idea

after_switch_theme

$wp_rewrite->flush_rules()

get_option('flush_done', 0) == 0

update_option('flush_done', 1)

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