Automatically assign posts with custom field to taxonomy term

Question

I hope someone can help me.

• I have a custom post type called Site members with slug site-members
• I have a custom field (which is a select field) called aab-ew-select-visible and in this field users can select either of the options display or hide
• The taxonomy slug is test-all-members-cpt-tax
• The term slug is test-all-members-ew-tax

Whenever anyone posts a new post to this custom post type, they can choose to either 'hide' or 'display' a section of their post on the website. If they choose to 'display' with the select field, then they should automatically be assigned to the taxonomy term 'test-all-members-ew-tax' mentioned above.

If anyone can help with the code for this, that would be massively appreciated.

Thank you for your time, Andrew

Answer 1

The following should do what you need:

add_action ('save_post_site-members', 'add_term') ;

function
add_term ($post_id)
{
    if (defined ('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
        return ;
        }

    $meta_key = 'aab-ew-select-visible' ;
    $tax = 'test-all-members-cpt-tax' ;
    $term_slug = 'test-all-members-ew-tax' ;

    $meta_value = isset ($_REQUEST[$meta_key]) ? $_REQUEST[$meta_key] : '' ;
    if ('display' == $meta_value) {
        $term = get_term_by ('slug', $term_slug, $tax) ;
        if ($term) {
            wp_set_object_terms ($post_id, $term->term_id, $tax, true) ;
            }
        }

    return ;
}