Getting the values from a custom field

• Gonzalo

• March 15, 2019 at 10:50 pm

Hi,
I am working with a theme that has embedded taxonomies with custom fields.

Within this custom field there are many values created. My question is, how do I get all the values available, and also, in particular, how do I get the ID for a specific field save that has a specific value?

Thanks

• John Huebner

• March 16, 2019 at 1:08 am

Are you talking about getting the fields that are on the “Related Posts” that are selected? This is covered in the documentation for the relationship field. https://www.advancedcustomfields.com/resources/relationship/

• Gonzalo

• March 16, 2019 at 8:14 pm

Thanks for the quick response.
To clarify more my doubt, here I attach a dump of my postmeta DB:

When I try to update the POST field=field_5628165af3668 with:

update_field('field_5628165af3668','777',$postid);

It doesn’t add the values on the DB as it does when I select the option in the backend.
What I am doing wrong?

Thanks

• John Huebner

• March 17, 2019 at 1:22 am

A relationship field holds an array of post IDs. In order to add a value you need to first get the existing value and add to it. Example:

$value = get_field('field_5628165af3668', $post_id);
$value[] = '777';
update_field('field_5628165af3668', $value, $post_id);

• Gonzalo

• March 17, 2019 at 2:32 am

Thanks John, that did the trick!