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<?php
$taxonomy = 'product_cat';
$queried_object = get_queried_object();
$post_id = $queried_object->ID;
$terms = wp_get_post_terms($post_id, $taxonomy, array('fields' => 'ids'));
$term = false;
// find a term that is at the top level this will fail
// if no top level terms are assigned to the post
if (count($terms)) {
foreach ($terms as $term) {
if (!$term->parent) {
// parent is 0 = top level term
break;
}
}
}
// the above loop will exit with term = a top level term
// or the last term or false if there are no terms
// assigned ot the post
// the next section will get the top level term
// of the first term assigned to this post
// if the term from the above loop is not
// a top level term
if (count($terms) && $term->parent) {
// parent is not 0 and there are terms
$term = $terms[0];
$parent = $term->parent;
while ($parent != 0) {
$term = get_term_by('id', $parent, $taxonomy);
$parent = $term->parent;
} // end while $parent == 0
}
// this section will exit with either
// a top level term or false
// test for term == false before using it
if ($term) {
$image = get_field('products_background_image', $taxonomy . '_' . $term_id);
}
?>
<div class="catback"<?php
if ($image) {
?> style="background-image: url('<?php echo $image; ?>');"<?php
}
?>></div>
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