Unfortunately, this seems to do nothing. I’ve tried several fields, individual values, duplicate values, old_names and new_names, but nothing changes.
Hm. I hope I’m not stuck with Magic Fields.
I’ve got an old field, “basic_info_date”, which I’ll try to convert to a new field, “date”.
add_filter('acf/load_value/name=basic_info_date', 'convert_old_field_to_acf', 10, 3);
function convert_old_field_to_acf($value, $post_id, $field) {
if ($value !== NULL) {
// if the value is not set for ACF yet
// then the value will be NULL
// if the current value is not NULL
// then return because the field already
// had been set
return;
}
// get value from old field
$old_value = get_post_meta($post_id, 'date', false);
if (!empty($old_value)) {
$value = $old_value;
}
return $value;
}
This displays the Unix base time in 1970 as the date, because the value is null:
echo '<p>';
echo date('l, F j, Y', strtotime(get_field('date')));
echo ' at ';
echo get_field('time');
echo "<br />\n";
The time shows up OK because I have a default value set.
When I modify the field names, am I breaking something? Do I need to erase the group and start over?
I’m really baffled.
