以编程方式将自定义帖子添加到自定义分类

Question

I have custom post created at user's registration. There is also a custom taxonomy ('connection1') created. I need to add this post to that taxonomy.

Post is added fine. Taxonomy is added no problem as well. But for some reason, post is not added to the taxonomy

       $user = new WP_User( $user_id );
       $user->set_role( 'participation' );
       $my_cptpost_args = array(
            'post_title' => 'user-'.$user_id,
            'slug' => $user_id,
            'post_status'   => 'publish',
            'post_type' => 'profile'
        );
        $cpt_id = wp_insert_post( $my_cptpost_args, $wp_error);
        wp_insert_term($user_id,'connection1');
        $term_id = term_exists( $user_id, 'connection1' ); 
        wp_set_post_terms($cpt_id , array( $term_id ), 'connection1' );

Answer 1

The issue is related to term_exists function. It can return null/ID/array depending on what data you provided. Check docs. In your case, it will return an array which then you try to assign to terms array which will fail. Also no need to use term_exists function since wp_insert_term will return term ID. Your code should look like this:

$new_term = wp_insert_term($user_id,'connection1');
if( ! is_wp_error($new_term) ) {
    wp_set_post_terms($cpt_id , $new_term['term_id'], 'connection1' );
}