Same file upload will upload again with a different name, instead of beeing cache like where only the name is returned

hi, i found same file upload will return different name，and this will create many files, i want upload same file. return the same file，please help me， i found this code

IncomingForm.prototype._uploadPath = function(filename) {
  var buf = crypto.randomBytes(16);
  var name = 'upload_' + buf.toString('hex');

  if (this.keepExtensions) {
    var ext = path.extname(filename);
    ext     = ext.replace(/(\.[a-z0-9]+).*/i, '$1');

    name += ext;
  }

  return path.join(this.uploadDir, name);
};

[GrosSacASac]

https://github.com/node-formidable/formidable/pull/689 Try the branch, and use the changed filename option. Inside you can sync check existing filenames you have.

If you want to prevent duplicate file content but with different name then you have to manually compare file content after file upload and delete one.

[banli17]

Sorry, I will use Google Translate. I want to upload the same image only once, and if it exists, it will return the name of the previously generated image (similar to cache) instead of regenerating. I’m not sure if this kind of cache is better？