dynamic change of the upload folder

I have done this (in testing) with getting the value from the POSTed variable in an AJAX call. There probably should be more sanitization:

function changeUploadFolder( $upload ) {
  $mypath = trim( $_POST['mypath'] );  //sanitize this better!
  // only affect requests to original upload dir
  if ( stripos( $mypath, $upload['baseurl'] ) == 0 ) {
    $diff = str_replace( $upload['baseurl'] . '/', '', $mypath ) );
    $parts = pathinfo( $diff );
    $upload['subdir'] = $parts['dirname'] ? '/'.$parts['dirname'] : '';
    $upload['path'] = $upload['basedir'] . $upload['subdir'];
    $upload['url']  = $upload['baseurl'] . $upload['subdir'];
  }
  return $upload;
}

Hey,
thanks for this solution.

I see, I forgot to write that I pass the new path without $ _POST,
but determine it via a mysql query.

is it possible to pass the new path into the function via a parameter?

/CUSTOM –> $newPath

an example:

function changeUploadFolder( $upload ) {
      $upload['subdir'] = '/CUSTOM' . $upload['subdir'];
      $upload['path'] = $upload['basedir'] . $upload['subdir'];
      $upload['url']  = $upload['baseurl'] . $upload['subdir'];
      return $upload;
}

$newPath = $getNewFolder->show_newFolder() . '/' . $getNewSubFolder->show_NewSubFolder();

add_filter('upload_dir', 'changeUploadFolder');
...
 //here the file is uploaded with the new dynamic path
...
remove_filter('upload_dir', 'changeUploadFolder');

• This reply was modified 4 years, 5 months ago by nirus.
• This reply was modified 4 years, 5 months ago by nirus.
• This reply was modified 4 years, 5 months ago by nirus.

Filter callbacks only get passed what the apply_filters() call passes to them. You cannot not add additional parameters. If your callback needs other variable data that’s not passed you need to obtain it through other means such as a global or static property.