How do you add [ get_comments_number() ] function in a custom field?

• lorebion

• March 16, 2016 at 3:51 am

Hi I’m trying to add a custom field with a function that automatically takes “amount of comments in post” from the posts.

I’ve tried to copy the php code in the custom field I’ve created but it seems it doesn’t register php.

I’ve also tried to install “insert PHP” plugin and other exec PHP plugins to no avail.

Any suggestions?

• John Huebner

• March 16, 2016 at 6:39 am

You cannot add PHP to custom fields unless you create or add filters to run on them.

http://www.advancedcustomfields.com/resources/acfformat_value/

In ACF5 there are additional hooks other than the ones listed on that page, here is the code in ACF where they are called

$value = apply_filters( "acf/format_value", $value, $post_id, $field );
$value = apply_filters( "acf/format_value/type={$field['type']}", $value, $post_id, $field );
$value = apply_filters( "acf/format_value/name={$field['name']}", $value, $post_id, $field );
$value = apply_filters( "acf/format_value/key={$field['key']}", $value, $post_id, $field );

• lorebion

• March 16, 2016 at 11:03 pm

Sorry I’m a newbie to this, what do you apply in the $value, $post_id, $field ?

Can u give examples?

and does this code go into the functions.php in my child theme?

• John Huebner

• March 17, 2016 at 5:35 am

this is explained on the page I linked to above http://www.advancedcustomfields.com/resources/acfformat_value/

$value = the value which was loaded from the database
$post_id = the post ID from which the value was loaded
$field = An array containing all the field settings for the field which was used to upload the attachment

Let’s say that you wanted to do sortcoded on all acf text fields

add_flter('acf/format_value/type=text', 'text_field_do_shortcodes', 10, 3);
function text_field_do_shortcodes($value, $post_id, $field) {
  return do_shortcode($value);
}