Possible to use uploaded file after upload is success?

Hi Colin

yes you can, by implementing the plugin’s filters. To do the extraction you need to implement wfu_before_file_upload and wfu_after_file_upload filters and do the extraction using php. This is how:

if (!function_exists('wfu_before_file_upload_handler')) {
    function wfu_before_file_upload_handler($file_path, $file_unique_id) {
      $_SESSION['wfu_tempfiles'][$file_unique_id] = $file_path;
      return $file_path;
  }
  add_filter('wfu_before_file_upload', 'wfu_before_file_upload_handler', 10, 2);
}
if (!function_exists('wfu_after_file_upload_handler')) {
  function wfu_after_file_upload_handler($changable_data, $additional_data) {
    if ($additional_data['upload_result'] == 'success' && isset($_SESSION['wfu_tempfiles'][$file_unique_id]) && $_SESSION['wfu_tempfiles'][$file_unique_id] != '') {
	  $file_contents = file_get_contents($_SESSION['wfu_tempfiles'][$file_unique_id]);
      // perform here html extraction
	  // you can set javascript code to run in client browser using $changable_data['js_script']
	}
	return $changable_data;
  }
  add_filter('wfu_after_file_upload', 'wfu_after_file_upload_handler', 10, 2);
}

You can use Code Snippet plugin to add the following code in your website.
Inside wfu_after_file_upload_handler you can also perform user notification by sending an email. You can also run custom javascript code at user’s browser right after the extraction by setting $changable_data[‘js_script’] variable.

Nickolas

Thank you so much Nickolas! And for getting back to me so quickly! I really appreciate it.

You’re a true gentleman!

Just one point that I wasn’t so sure of; do I only use Code Snippet to add my php extraction file, and then add the filters in the plugin files? Or did you mean add this…

if (!function_exists('wfu_before_file_upload_handler')) {
    function wfu_before_file_upload_handler($file_path, $file_unique_id) {
      $_SESSION['wfu_tempfiles'][$file_unique_id] = $file_path;
      return $file_path;
  }
  add_filter('wfu_before_file_upload', 'wfu_before_file_upload_handler'

… to Code Snippet.

Apologies if this is trying to confuse you.

Thanks so much again, and kind regards,
Colin

Hey Nickolas,

Apologies if I’m being a pain, but I added all that code to Code Snippet and I think it’s working fine!

Does the extraction have to be a html extraction? Can it not be done in php?

Regards,
Colin

Hi Colin sorry to keep you waiting,

The extraction must be done in php in function wfu_after_file_upload_handler. The variable $file_contents keeps the contents of the file you want to extract its data from. So, you can work with this variable. Do you know how to do this?

Nickolas

Nickolas, does this require the paid version of the plugin or will it work in free one also?

nope, free version will work just fine…

So I am certainly screwing something up here but here is what I am trying to do:

Allow User to upload file (small MP4 in my case)
After succesful upload, video is then displayed on the same page that has the file upload link.

I have added your code into Code Snippets plugin, but it never seems to trigger?

I even tried calling a simple Echo statement and nothing happens.

Am I going about this the wrong way or did I miss something?

Echo will not work, to test it you can try the following command:

wfu_debug_log($message);

where $message is anything you like. This message will be saved inside file debug_log.txt in wp-content folder of your wordpress installation.

Try this simple one and let me know.

Nickolas

Here is what I tried:

if (!function_exists('wfu_before_file_upload_handler')) {
    function wfu_before_file_upload_handler($file_path, $file_unique_id) {
      $_SESSION['wfu_tempfiles'][$file_unique_id] = $file_path;
      return $file_path;
  }
  add_filter('wfu_before_file_upload', 'wfu_before_file_upload_handler', 10, 2);
}
if (!function_exists('wfu_after_file_upload_handler')) {
  function wfu_after_file_upload_handler($changable_data, $additional_data) {
    if ($additional_data['upload_result'] == 'success' && isset($_SESSION['wfu_tempfiles'][$file_unique_id]) && $_SESSION['wfu_tempfiles'][$file_unique_id] != '') {
	  $file_contents = file_get_contents($_SESSION['wfu_tempfiles'][$file_unique_id]);
      // perform here html extraction
	  $message="TEST MESSAGE nymets1104";
	  wfu_debug_log($message);

	  // you can set javascript code to run in client browser using $changable_data['js_script']
	}
	return $changable_data;
  }
  add_filter('wfu_after_file_upload', 'wfu_after_file_upload_handler', 10, 2);
}

Not seeing a debug file anywhere in wp-content though

OK it seems no snippets will run for me so let me address that and then get back with you.

I got a test snippet to work so I think I am good there. I did notice this in the console log when I loaded the page using the File Upload Plugin:

IMAGE OF ERROR LOG

Also, the files successfully upload and the Plugin shows the “File name” successfully uploaded message when it finishes the upload.

Hi Colin,

These are XHR errors. The plugin is trying to communicate with the server in order to perform some task (notify that file was sent, send email notification) but there seems to be a problem.

Were these errors existing before you install Snippet?

Nickolas

I checked another page that has a different plugin on it and I am getting a similar 500 error so I dont think its anything specific to this plugin.

The odd thing is that despite the errors, I still get the generated email when the file finishes uploading and on the front end, nothing seems amiss.

ok, so did you manage to do the extraction?

Not yet,

I essentially only need to extract the file name or the path to the file. Would this information be stored in the $file_contents?

Would this require a refresh of the page as well I am thinking in order to display the uploaded image/video on the page?