Reply To: Support for "Legacy" Fields

• tommcgee

• September 23, 2016 at 8:51 am

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.