Reply To: Change file upload path for one specific field.

• iamrobertandrews

• September 15, 2021 at 9:22 am

Three more things:

+1)
I see from the doc, when a key is passed, the prefilter should take parameter “key=”, not “name=” – so I’ve changed this.

+2)
Even so, looking in debug.log, I see…
[15-Sep-2021 12:11:20 UTC] PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'field_name_upload_prefilter' not found or invalid function name in /Users/MyName/Sites/sitename/wp-includes/class-wp-hook.php on line 305

+3)
When I amend to correct the underscore typo (field_nameupload_prefilter to field_name_upload_prefilter, the warning is solved – the file successfully uploads… to /uploads/companies – but not /uploads/companies/logos. Ergo, I may be misunderstanding the role of subdir for wp_upload_dir.

So, the following works nicely…

add_filter('acf/upload_prefilter/key=field_6140aa779827d', 'field_name_upload_prefilter');
function field_name_upload_prefilter($errors) {
  // in this filter we add a WP filter that alters the upload path
  add_filter('upload_dir', 'field_name_upload_dir');
  return $errors;
}

// second filter
function field_name_upload_dir($uploads) {
  // here is where we later the path
  $uploads['path'] = $uploads['basedir'].'/companies/logos';
  $uploads['url'] = $uploads['baseurl'].'/companies/logos';
  // $uploads['subdir'] = 'logos';
  return $uploads;
}

… I commented-out subdir and added the full path to basedir and baseurl. Is this acceptable?