Utilizing LoopBack Storage Service: Leveraging upload/download functions within JavaScript code

Is there a straightforward way to upload and download files using the storageService.upload and storageService.download functions in my JavaScript/Loopback code? I'm trying to achieve something like this:

app.post("/sendFile", (req, res) => client.upload( req, res, {}, () => {console.log("cb")} ) );

However, I am encountering issues. I am sending my REST request with the Advanced Rest Client Application on Google Chrome. I have set the Content-Type to multipart-form-data and included my jpg file in the files section.

The error message I am receiving is: Failed to create a multipart upload on S3: {"message":"Missing required key 'Bucket' in params","stack":"MissingRequiredParameter: Missing required key 'Bucket' in params (...).

As a newcomer, I believe that the Loopback documentation could be more helpful. Thank you for any assistance provided!

javascriptexpressloopbackjs

Answer №1

I encountered the same error and resolved it by appending a property to the req-object containing the bucket name before executing the .upload() method as shown below:

app.post("/sendFile", (req, res) => {
  req.params.container = "name-of-your-bucket";
  client.upload( req, res, {}, (err, fileObject) => {});
});

Alternatively, a more efficient approach when defining options may be:

app.post("/sendFile", (req, res) => {

  var options = {
    container: "name-of-your-bucket"
  };

  client.upload( req, res, options, (err, fileObject) => {});
});

If you are working with Loopback and need help implementing upload/download functionality, I suggest referring to this Stackoverflow question

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