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I am trying to implement a webhook in a plugin which should fire everytime a user saves a post. It works fine, but I recive two requests on frontend api. The first request has got a wrong slug. I wonder why this is happening or what I am doing wrong here. The second call works perfect.

 defined('ABSPATH') or die('Unauthorized access');

 add_action('save_post', 'update_front_end', 10, 2);
 function update_front_end($post_id, $post){

   $exovias_webhooks_options = get_option( 'exovias_webhooks_option_name' ); // Array of All Options
   $secret_0 = $exovias_webhooks_options['secret_0']; // Secret
   $frontendurl_1 = $exovias_webhooks_options['frontendurl_1']; // FrontendUrl

 
  $slug = basename(get_permalink($post_id));
  $url = $frontendurl_1 . '/api/revalidate?secret=' . $secret_0 .'&slug=' . $slug;

   wp_remote_post($url);

}
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    You should probably use the wp_after_insert_post hook instead - just replace the save_post with wp_after_insert_post. I don't guarantee the hook doesn't run twice or more, but with that hook, you should be able to get the correct slug, regardless the post was edited via the block/Gutenberg editor or the classic editor. And why didn't you use the actual post slug, i.e. $post->post_name, and instead, parse it from the post's permalink URL?
    – Sally CJ
    Oct 15, 2022 at 15:00
  • @SallyCJ Thanks a million for trying to help me out. I tried your beautiful solution. Looks and sounds cleaner. But unfortunately the hook is still running twice. And the first run provides a slug of "46-revision-v1" while the scnd provides the correct slug. Oct 16, 2022 at 9:39
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    I posted an answer, which might help?
    – Sally CJ
    Oct 16, 2022 at 13:09
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    @SallyCJ This helped a lot. Wonderful. Thanks a million. Now just one request is left. Deep bow concerning your depth of wp knowledge. Oct 18, 2022 at 10:40

1 Answer 1

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I wonder why this is happening or what I am doing wrong here

WordPress has a revisions system which stores a record of each saved draft or published update, and a post can have one of a number of statuses like auto-draft when a new post is created and saved automatically in the background, draft (e.g. when the post is autosaved) or publish (e.g. when the publish button is clicked). So the save_post hook (and other hooks like wp_after_insert_post) can run multiple times while editing a post, and thus you should check whether WordPress is doing an autosave and whether the post being saved is a revision, before running your remote HTTP request.

Here's an example which also checks whether WordPress is doing cron (/wp-cron.php) or AJAX (wp-admin/admin-ajax.php), and whether the post status is publish or private:

function update_front_end( $post_id, $post ) {
    $doing_autosave = ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE );

    if ( $doing_autosave || wp_is_post_revision( $post_id ) ||
        wp_doing_cron() || wp_doing_ajax()
    ) {
        return;
    }

    if ( in_array( $post->post_status, array( 'publish', 'private' ) ) ) {
        // your code here; define the $url, etc.

        // now run your remote HTTP request
        wp_remote_post( $url );
    }
}

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