@hatsumatsu ‘s solution works great, except I can’t seem to be able to make it work with a date field assigned to a custom taxonomy. I’m using it for a date picker like this:
/**
* Convert values of ACF core date pickers from Ymd to timestamp
* @param string $value unmodified value
* @param int $post_id post ID
* @param object $field field object
* @return string modified value
*/
function acf_save_as_wp_date( $value, $post_id, $field ) {
if( $value ) {
$value = strtotime( $value );
}
return $value;
}
add_filter( 'acf/update_value/type=date_picker', 'acf_save_as_wp_date', 10, 3 );
/**
* Convert values of ACF core date pickers from timestamp to Ymd
* @param string $value unmodified value
* @param int $post_id post ID
* @param object $field field object
* @return string modified value
*/
function acf_load_as_acf_date( $value, $post_id, $field ) {
if( $value ) {
$value = date( 'Ymd', $value );
}
return $value;
}
add_filter( 'acf/load_value/type=date_picker', 'acf_load_as_acf_date', 10, 3 );
Tried adding the name of taxonomy, like $value = strtotime( $value, 'event_dates' ); and $value = date( 'Ymd', $value, 'event_dates' ); as well, but I don’t know if that’s at all correct way of doing it.
