How to upload files - sails.js

Question

I can download images and pdf, but I can't download documents files (.doc .pptx .odt ...)

when download Documents(.doc .pptx .odt ...) are downloaded as .ZIP only XML files. What I can do?

upload: function (req, res) {
  req
    .file('avatar')
    .upload({
      maxBytes: 10000000
    }, function whenDone(err, uploadedFiles) {
      if (err) {
        return res.negotiate(err);
      }

      // Generate a unique URL where the avatar can be downloaded.
      avatarUrl = require('util').format('%s/user/avatar/%s', sails.getBaseUrl(), req.session.User.id_user),
      // Grab the first file and use it's `fd` (file descriptor)
      avatarFd = uploadedFiles[0].fd

      var SkipperDisk = require('skipper-disk');
      var fileAdapter = SkipperDisk(/* optional opts */);

      // Stream the file down
      fileAdapter.read(avatarFd).on('error', function (err){
        return res.serverError(err);
      }).pipe(res);

  });
},

Andi N. Dirgantara · Accepted Answer · 2015-07-04 15:55:02Z

4

+200

I use this at Windows and it have no problems.

upload  : function (req, res) {
  req.file('avatar').upload({
    maxBytes: 10000000
  }, function whenDone(err, uploadedFiles) {
    if (err) {
      return res.negotiate(err);
    }

    var avatarFd = uploadedFiles[0].fd;

    res.ok(avatarFd);

  });
},
download: function (req, res) {
  var location = req.param('fd');
  var SkipperDisk = require('skipper-disk');
  var fileAdapter = SkipperDisk(/* optional opts */);
  fileAdapter.read(location).on('error', function (err) {
    return res.serverError(err);
  }).pipe(res);
}

First upload it using /somecontroller/upload with multipart/form-data, it will return an fd location. And download it using this url

http://localhost:1337/somecontroller/download?fd=[fd-from-upload-return]

Controller name and host name is depends on your application configuration.

Using fd full path is just for an example, in prodtion later you should use your own controller to address from uploaded folder to return file that has been uploaded, it's usually on .tmp/uploads/.

answered Jul 4, 2015 at 15:55

Andi N. Dirgantara

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2 Comments

tylermauthe Over a year ago

How do you change the filename of the downloaded file?

tylermauthe Over a year ago

You pipe the write stream to res.attachment('filename.ext') instead of res.

Chris Anderson · Accepted Answer · 2015-07-04 05:14:38Z

2

So you're using a library that is part of the Sails.js ecosystem known as Skipper. It has some documentation that may be helpful to you.

It saves your file to a random GUID on upload until you choose to do something with it. My guess is that it's not carrying the ".docx" tag with it when it does so and .docx files are really just zips. (Maybe this is a bug you can file?)

My suggestion would be to use the saveAs option. You can specify a string to use as the save location instead. i.e.:

req.file('file_upload').upload({saveAs: Guid.raw()+'.docx'}, handleUploadCompletion);

There is also the ability to pass a function so handle multi-file uploads depending on the stream.

answered Jul 4, 2015 at 5:14

Chris Anderson

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Comments

Yann Bertrand · Accepted Answer · 2015-07-06 14:08:38Z

2

I think you're forgetting some HTTP headers in your response:

Content-disposition: To set the name of the file you're sending
- e.g. "attachment; filename="ecd1c7c2-6e32-4110-8905-c003a4713bb0.odt""
Content-type: The MIME type of the content you're sending
- e.g. "application/vnd.oasis.opendocument.text"

You can set them manually or use the res.attachment method:

res.attachment(avatarFd);

edited Jul 6, 2015 at 14:08

answered Jul 6, 2015 at 13:46

Yann Bertrand

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