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WordPress function to create or update custom taxonomy terms from an ACF date-picker on post save.
<?php
function create_manga_categories( $post_id ) {
$date = get_field('manga_group')['manga_release_date'];
if(get_post_type( $post_id ) == 'manga' && $date) {
$date_convert = DateTime::createFromFormat('Ymd', $date);
$date_converted = $date_convert->format('F Y');
$date_converted2 = $date_convert->format('F j');
$date_converted3 = $date_convert->format('F-j-Y');
$terms = [];
$parent_term_check = get_term_by('name', $date_converted, 'manga_release_date', 'ARRAY_A');
if(!$parent_term_check) {
$parent_term = wp_insert_term($date_converted, 'manga_release_date');
$parent_term_id = $parent_term['term_id'];
} else {
$parent_term_id = $parent_term_check['term_id'];
}
$terms[] = $parent_term_id;
$child_term_check = get_term_by('slug', $date_converted3, 'manga_release_date', 'ARRAY_A');
if(!$child_term_check) {
$child_term = wp_insert_term($date_converted2, 'manga_release_date', array('parent'=>$parent_term_id, 'slug'=>$date_converted3));
$terms[] = $child_term['term_id'];
} else {
$terms[] = $child_term_check['term_id'];
}
wp_set_object_terms( $post_id, $terms, 'manga_release_date' );
}
elseif( get_post_type( $post_id) == 'manga' ) {
wp_set_object_terms( $post_id, null, 'manga_release_date');
}
}
add_action('acf/save_post', 'create_manga_categories', 20);
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