single-{post_type}.php not working

Question

I registered a new post type called "events". The posts of this type do show up in the loop but i can't access the single-events.php when i click on a "event" post. Also I can't access the categories of this post type.

The only advice you read on the internet - to flush the rewrite rules - didn't work me.

Any other suggestions?

Here is my registration code for this post type:

add_action ('init', 'register_events_posttype');
function register_events_posttype(){
   $labels = array();

    $args = array(
        'label' => 'Events',
        'labels' => $labels,
        'show_in_menu' => true,
        'show_ui' => true,
        'show_in_nav_menus' => true,
        'show_in_rest' => true,
        'menu_position' => 2,
        'menu_icon' => 'dashicons-calendar-alt',
        'supports' => array('title','editor','thumbnail', 'excerpt', 'custom-fields', 'comments','revisions', 'archives',),
        'taxonomies' => array('category', 'post_tag'),
        'rewrite' => array('slug' => 'events','with_front' => false)
    );
    register_post_type('event', $args);
}

Answer 1

according to your code, your cpt is "event". You will either need to change the your php to single-event.php or change this line:

register_post_type('event', $args);

to

register_post_type('events', $args); 

Usually they are the plural so the 2nd option is a better choice. With that being said, I always recommend adding namespace to avoid conflicts. Especially in this case because many people have event CPTs.

Try "shc-events" or something like that to make it your own.

Answer 2

You've registered the post type event, not events. So you should be able to use single-event.php. (Or, alternately, change your last line to register_post_type( 'events', $args );.

Docs: register_post_type()

Answer 3

Hmm. After spending hours on research and trying out some suggested solutions I found out I just needed to add this arguments to the arguments array and only then to flush the permalinks (= switching to the default permalink structure and back to custom post name structure in the dashboard settings):

'public' => true,
'has_archive' => true,

It had nothing to do with the singular parameter ('event') in register_post_type. I changed it back like it was (singular 'event') because i like to have it singular for the database requests. The post type name for posts inside the database is singular as well ('post').

But for the WP REST API route I set the rest_base to plural:

'rest_base' => 'events',