My custom taxonomy "company" has an Advanced Custom Fields field group with fields including a Checkbox, "tags". (This adds to each "company" term fields including "tags", which accepts multiple string values corresponding to checkbox items).
I need to gather several groups of terms whose "tags" values include particular distinct values, eg. "Publishing", "Media", "Advertising.
So far, I have the following method, in which I cycle through all "company" terms and, if the string is found, add that term's ID to an array, used later to get actual term objects...
// Pick a focus tag (choose from 'Tags' ACF Checkbox values in the Organisation field)
$tag_section = "Publishing";
// First, get all organisation terms
$organisations = get_terms( 'company' );
// Initialise array we will use to store only matching organisations
$orgs_filtered = array();
// Make an array with only IDs of organisations with a matching tag
foreach ($organisations as $organisation) {
// Construct prefixed object ref for this organisation
$org_id_prefixed = 'company_'. $organisation->term_id;
// If the intended value matches the target value
if(in_array($tag_section, get_field('tags', $org_id_prefixed))){
// add its term ID to our array - use this array to feed a WP_Query or similar
array_push($orgs_filtered, $organisation->term_id);
}
}
... But this only gives me an array of the IDs of matching terms - not an array **of the terms* themselves.
It feels like my method is cumbersome, and that it should be possible to make the above more efficient and get the actual term objects themselves.
I have read about using meta_query with get_posts via ACF and I am familiar with WordPress' get_terms(). So I am hopeful it is possible to use a similar method.
But, when I try the following test in pursuit, it returns nothing from $my_terms...
$args = array(
'taxonomy' => 'company',
'hide_empty' => false,
'meta_query' => array(
array(
'key' => 'tags',
'value' => 'Publishing',
'compare' => '='
)
)
);
$my_terms = get_terms($args);
echo '<pre>';
print_r($my_terms);
echo '</pre>';
Thinking perhaps the 'value' should be an array, I changed the value part to 'value' => array('Publishing'), ...
But then that just shows ALL "company" terms from the site, with no matching in effect.
I have also tried both variations with a compare value of in.
Do you have any ideas about this?
Thanks.