Set the post URL as default value to custom field

This support ticket is created Il y a 4 années et 7 mois. 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 - Il y a 4 années et 7 mois.

Assisté par: Shane.

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février 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

février 21, 2022 at 8:08 pm #2299243

Shane

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

février 25, 2022 at 10:16 pm #2303419

juttaB

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

thanks!

février 28, 2022 at 2:20 pm #2304865

Shane

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