"Blueimp jQuery File Upload" rename files

Question

I'm using the Blueimp jQuery file upload tool. I'd like to completely rename the files as they're uploaded. Since photos are being added to a unique directory based on the userID, I'd really just like to add photos with names 001.jpg, 002.jpg, 003.jpg, etc. How can I accomplish this (either by modifying UploadHandler.php or index.php?

In index.php (code below currently changes the upload directory):

$userID = 'user005'; //hardcoded in this example
$options = array('upload_dir'=>'files/'.$userID.'/', 'upload_url'=>'files/'.$userID.'/');
$upload_handler = new UploadHandler($options);

Answer 1

Old post, but as I was searching the same thing today, I post my solution hoping it will help someone.

I edited the UploadHandler.php file in this way:

        //custom function which generates a unique filename based on current time
        protected function generate_unique_filename($filename = "")
            {

                $extension = "";
                if ( $filename != "" )
                {
                    $extension = pathinfo($filename , PATHINFO_EXTENSION);

                    if ( $extension != "" )
                    {
                        $extension = "." . $extension;
                    }
                }

                return md5(date('Y-m-d H:i:s:u')) . $extension;
            }


            protected function handle_file_upload($uploaded_file, $name, $size, $type, $error,
                    $index = null, $content_range = null) {
                $file = new \stdClass();

                //MYEDIT to generate unique filename
                $file->name = $this->generate_unique_filename($name);

                //ORIGINAL LINE: $file->name = $this->get_file_name($uploaded_file, $name, $size, $type, $error, $index, $content_range);

                //...
}

Answer 2

For those who only what to give the name through the $options:

Replace (line 1056?)

$file->name = $this->get_file_name($uploaded_file, $name, $size, $type, $error, $index, $content_range);

with

$extension = pathinfo($name , PATHINFO_EXTENSION);
if ( $extension != "" ){
    $extension = "." . $extension;
}

$file->name = (isset($this->options['filename']) && isset($extension) ) 
     ? $this->options['filename'] . $extension
     : $this->get_file_name($uploaded_file, $name, $size, $type, $error, $index, $content_range);

Then give the name in the option like this:

$upload_handler = new UploadHandler(array(['filename' => 'whatever' ]));