[Resolved] How to dynamically populate a custom field dropdown with terms from a taxonomy

[Author]

Posts

[khalidK]

I am trying to:
Dynamically populate the a Dropdown list of Custom User Field with Custom Taxonomy terms

 
//dynamically populate select field with Taxonomy Terms

add_filter( 'wpt_field_options', 'populate_select', 10, 3);
function populate_select( $options, $title, $type ){
switch( $title ){
    case 'School Name':
        $options = array();
        $args = array(
        'hide_empty' => 'false');
        $terms = get_terms( array('school'),$args );
        foreach ($terms as $term) {
        $options[] = array(
        '#value' => $term->term_id,
        '#title' => $term->name,
        );
    }
    break;
    }
    return $options;
}

For some reason the list comes back frozen without any items

[Nigel]

Hi Khalid

That looks okay, but I would check the syntax for get_terms, which expects the arguments to be a single array of options: https://developer.wordpress.org/reference/functions/get_terms/

I would then add error_log(print_r($terms, true)); immediately after get_terms and inspect your logs to double-check that you have retrieved the terms correctly.

Let me know what you find.

[khalidK]

I figured out the issue. I only had to replace 'false' with a 0, and it worked.

The final code is below for future reference:

//dynamically populate select field with Taxonomy Terms

add_filter( 'wpt_field_options', 'populate_select', 10, 3);
function populate_select( $options, $title, $type ){
switch( $title ){
    case 'School Name':
        $options = array();
        $args = array(
        'hide_empty' => 0);
        $terms = get_terms( array('school'),$args );
        foreach ($terms as $term) {
        $options[] = array(
        '#value' => $term->term_id,
        '#title' => $term->name,
        );
    }
    break;
    }
    return $options;
}