apply_filters("piklist_part_process-{$folder}", $_part);The piklist_part_process-{$folder} filter is used to filter the parts (e.g. meta-boxes, settings, etc.) before they are saved. This allows you to modify or remove parts before they’re processed.
$folderThe parts folder you want to filter (e.g. meta-boxes, settings, etc.)
$partThe individual part (e.g. meta-box, setting, etc.) to be modified or removed. It’s an associative array that contains all the information about the part.
$folderThe folder the part is stored in. If it’s a meta-box, then this would be “meta-boxes”.
Example:
Let’s say we have a couple meta-boxes on our default post type. One of the meta-boxes has a field that asks whether this post is about a magician. We then want another meta-box with details about the magician to only show up if it is. To get the details meta-box to only show up in this instance would look like this:
add_filter('piklist_part_process', function($part) {
global $post;
// Make sure this is a post edit screen
if ( $post && 'post' === $post->post_type )
{
// Check that this is the right folder and part
if ( 'meta-boxes' === $folder && 'magician-details.php' === $part['part'] )
{
if ( 'yes' !== get_post_meta($post->ID, 'is_magician', true) )
{
return false;
}
}
}
return $part;
}
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