Preview solution !

• ovan

• September 27, 2018 at 2:44 am

Sorry, but this is not working with current Pro-Version 5.7.6. The get_field always returns null when its in preview mode and “draft”. The post type is just “page”, not a custom post type. Its only when the post status is “draft” (“pending” or “publish” is working in preview mode).

• ovan

• October 15, 2018 at 8:04 pm

Update: This seems to be not an ACF Bug. It comes from another plugin called “ACF User Role Field Setting”. I’ve opened a new topic for that here.

• josfaber

• May 16, 2019 at 12:11 am

This bug is present in WordPress 5.0.3 with ACF 5.7.11.
Updating to ACF 5.8.0 solves the problem.

• Flegma

• June 27, 2019 at 10:50 pm

Hello,
its not working for WP 5.2.2 and ACF 5.8.1

Any update on this?

Best.

• berat

• September 6, 2019 at 8:15 pm

+1 same here

Still not any real solution for this ?

acf Version 5.8.4
wp 5.2.3

• Elliot

• September 7, 2019 at 9:58 am

Hi All,

This is a known issue in the Gutenberg project, but no solution has yet been announced.
I’m sorry to report that this is not fixable from my end.

• elron

• December 27, 2019 at 1:36 am

Hey guys,
My temporary solution is to use the classic editor plugin.
Now I can preview my changes and they show up.
Hope it helps!

• freeconcepteur

• April 7, 2020 at 1:31 am

Thank’s !!!!!

• tokkilee

• May 19, 2020 at 2:14 am

I’m having this issue on a site as well. Not custom fields, on Pages, already using classic editor. Any updates?

• NilsDannemann

• August 4, 2020 at 2:18 am

+1

Same issue in Preview.
Gutenberg Editor.

• webprom

• September 15, 2020 at 1:53 am

Preview shows thumbnail 🙁 Gutenberg

• CamiloAPR

• September 23, 2020 at 7:23 am

It seems to me as more of an ACF issue than Gutenberg’s. Apparently if there’s an existing revision/autosave record in the DB of the post being previewed it will just return false when you try to retrieve the field using ACF’s functions. This is a workaround I’m currently testing:

function fix_post_id_on_preview($null, $post_id) {
    if (is_preview()) {
        return get_the_ID();
    }
    else {
        $acf_post_id = isset($post_id->ID) ? $post_id->ID : $post_id;

        if (!empty($acf_post_id)) {
            return $acf_post_id;
        }
        else {
            return $null;
        }
    }
}
add_filter( 'acf/pre_load_post_id', 'fix_post_id_on_preview', 10, 2 );

Another workaround would be to just use get_post_meta instead of ACF’s functions

• alin.muntean

• November 3, 2020 at 7:01 pm

Thanks @camiloapr! Your snippet helped me!

• Bonnie

• November 7, 2020 at 2:00 am

@camiloaprs solution doesn’t seem to work for fields from option pages.
Any idea on how to solve this?

• Intrepidrealist

• December 13, 2020 at 12:14 pm

Well, this just saved my bacon!

Thank you, CamiloAPR

I’m bookmarking this thread for sure!