Set the post URL as default value to custom field

This support ticket is created Il y a 4 years, 3 months. There's a good chance that you are reading advice that it now obsolete.

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Ce sujet contient 3 réponses, a 2 voix.

Dernière mise à jour par Shane Il y a 4 years, 2 months.

Assisté par: Shane.

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February 21, 2022 at 5:27 pm #2299131

juttaB

Hi there,
I have created a custom field for an URL, and I would like to set the post URL of the field to be created as a default value. How can I do this? What exactly do I have to enter in the field for default Value?

thanks in advance
Jutta

February 21, 2022 at 8:08 pm #2299243

Shane

Supporter

Les langues: Anglais (English )

Fuseau horaire: America/Jamaica (GMT-05:00)

Hi Jutta,

Unfortunately no this won't be possible to do.

You can only set the field's default value in the custom fields settings page, which can only be set to a fixed text there.

Thanks,
Shane

February 25, 2022 at 10:16 pm #2303419

juttaB

Hi Shane, what code would I add for the post-url?

thanks!

February 28, 2022 at 2:20 pm #2304865

Shane

Supporter

Les langues: Anglais (English )

Fuseau horaire: America/Jamaica (GMT-05:00)

Hi Jutta,

You should be able to do it with the hook below.
https://developer.wordpress.org/reference/hooks/save_post/

This hook will trigger when you update/save the post on the backend.

Now you will also need to make use of the update_post_meta function.
https://developer.wordpress.org/reference/functions/update_post_meta/

Here is an example that you can modify to craft a solution for this case.
https://wordpress.stackexchange.com/questions/284749/set-the-value-of-custom-field-when-post-is-published-or-updated

Thanks,
Shane