change taxonomy terms on post update not on post creation

• jkjkjk

• April 7, 2021 at 10:35 pm

Hi, can you help me please?
I’ve got a function which hooks into the save post action.
Unfortunately it only works on creating a new post but not when updating an existing post.
What do i have to do make that happen?

I would like to have the taxonomy term “ha_p_kategorie” changed based on the true/false field “ha_p_gastspiel” and
the taxonomy term “ha_p_jahrgang” changed when the date in date picker field “ha_p_premiere” is changed.

This is my code:

function change_produktion_content($post_id) {
    if ( get_post_type( $post_id ) == 'ha_produktion' ) {
		
		// update taxonomy term based on true/false field ha_p_gastspiel
		$gastspiel = get_post_meta($post_id,'ha_p_gastspiel',true);
		if ($gastspiel == '1') {
			wp_set_object_terms( $post_id, 'Gastspiel', 'ha_p_kategorie' );
		} else {
			wp_remove_object_terms( $post_id, 'Gastspiel', 'ha_p_kategorie' );
		};
		
	    // update another taxonomy term based on date picker field ha_p_premiere
	    $premierendatum = get_post_meta($post_id,'ha_p_premiere',true);
	    $jahrgang = date("Y", strtotime($premierendatum));
	    update_field('ha_p_jahrgang', $jahrgang);
	    wp_set_object_terms( $post_id, $jahrgang, 'ha_p_jahrgang' );
		
	    $my_post = array();
	    $my_post['ID'] = $post_id;
	
	    remove_action('acf/save_post', 'change_produktion_content');
	    wp_update_post( $my_post );
	    add_action('acf/save_post', 'change_produktion_content');
    }
}
add_action('acf/save_post', 'change_produktion_content');

What am i doing wrong? or missing?

• John Huebner

• April 8, 2021 at 4:22 am

If you want to change things when a post is updated based on a value changing then you need to have you filter run before ACF updates the DB with the new values by setting the priority to something less than 10

add_action('acf/save_post', 'change_produktion_content', 1);

Then you can compare the value in $_POST[‘acf’] with the value in the DB.

• jkjkjk

• April 8, 2021 at 10:59 pm

Hi John, i am super sorry!

I had some faulty code above all that ACF stuff which i didn’t copied here.
Just a little “return;” that broke everything.
I am sorry for taking your time but also thankful for your fast reply!