I have a drop down select type field in Advanced Custom Fields. The values are Video and Image.

I want to replace the Custom post type slug. Currently, it is video.

I want to change mysite.com/video/post-name to mysite.com/1/post-name or mysite.com/0/post-name

I mean when the drop down value Video is selected, it will show mysite.com/1/post-name.

I can replace the post type slug.

function update_video_slug( $args, $post_type) {

$cptslug = "newslug";

if ( 'video' === $post_type ) {
    $args['rewrite']['slug'] = $cptslug;

return $args;


add_filter( 'register_post_type_args', 'update_video_slug', 10, 2 );

Can be the $cptslug value dynamic according to ACF value?

1 Answer 1


Can be the $cptslug value dynamic according to ACF value?

Yes, it can.

Here's how:

  1. First off, my ACF field settings are as follows:

    Name: video_or_image
    Type: Select

    1 : Video
    0 : Image
  2. So I register the post type like so, where the rewrite slug is set to %video_or_image% — i.e. %{Name of the ACF field}%, but you don't have to follow that format:

    register_post_type( 'video', array(
        'label'   => 'Video',
        'public'  => true,
        'rewrite' => array(
            'slug' => '%video_or_image%',
    ) );

    Or if you want to or can only use the register_post_type_args to change the rewrite slug, then just set the $cptslug to %video_or_image%.

  3. Next, I register the rewrite tag (%video_or_image%) after the register_post_type() call, which is hooked to the init action:

    add_rewrite_tag( '%video_or_image%', '([^/]+)' );

    Registering the tag is mandatory, and ensures that the tag is properly replaced with the RegEx pattern (i.e. ([^/]+)) when the rewrite rules are saved:

  4. Then I replace the rewrite tag with the proper (ACF) field value using the post_type_link filter:

    add_filter( 'post_type_link', function( $url, $post ){
        if ( 'video' === $post->post_type ) {
            $value = get_field( 'video_or_image', $post->ID );
            $url = str_replace( '%video_or_image%', $value, $url );
        return $url;
    }, 10, 2 );

That's all, but don't forget to flush the rewrite rules — simply visit the permalink settings page.

And I suggest you to set a default value for your ACF field, and use "better" values if possible.. I mean, other than 1 or 0.. but if you're sure about such values, then (I think) it's alright. =)


In my case, using only ([^/]+) in the rewrite tag, causes troubles when loading Pages (i.e. page post type):

add_rewrite_tag( '%video_or_image%', '([^/]+)' );

How I solved the problem

  1. Use a unique identifier, e.g. v/ as in:

    add_rewrite_tag( '%video_or_image%', 'v/([^/]+)' );

    Then in the post permalink, v/ should also be added to the rewrite tag replacement value — see step #4 above:

    $url = str_replace( '%video_or_image%', 'v/' . $value, $url );
  2. I restricted the ACF field value to numeric, then I used:

    add_rewrite_tag( '%video_or_image%', '(\d+)' );

    That (\d+) does not guarantee no conflict with other rewrite rules, but at least in my case, it worked.

Sorry about the ([^/]+) — I thought the 0 and 1 values were just examples. I should've just used (\d+).

  • 1
    Those rewrite rules will also capture parent/child/ page requests.
    – Milo
    Dec 10, 2018 at 5:37
  • 1
    You're welcome, @Noobie. But I updated the answer - the "UPDATE" part might help you and/or someone else. :)
    – Sally CJ
    Dec 10, 2018 at 22:59
  • 1
    You should then use a unique identifer, or if the value of the ACF field is numeric, you can try (\d+) instead of the ([^/]+). Refer to the "UPDATE" part in the answer.
    – Sally CJ
    Dec 14, 2018 at 15:18
  • 1
    Perfect! Seems all settled after using (\d+) as the ACF values are numeric. Cool.
    – Noobie
    Dec 14, 2018 at 19:31
  • 1
    @SallyCJ I've added it as a separate question - wordpress.stackexchange.com/questions/362784/…
    – chithra
    Mar 30, 2020 at 12:55

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.