Pass data along with original uploaded files

Transloadit
1

Hi there,

We’re attempting to use Uppy/Transloadit to upload files to an object store (AWS S3). We’re building a secondary index (relational DB table) of all files uploaded. Our current concept is as follows:

  1. Call backend that an upload is starting (register upload). This returns a unique ID for the file to be uploaded
  2. We need to track which original file belongs to which ID. We’re attempting to use the assembly fields for this and this works alright for single file assemblies. However, with multiple uploads per assembly we don’t know how to map this.
  3. When the assembly completes we can mark the files as complete in the secondary index.

Is there a way to pass metadata per file upload through an assembly?

I thought there might be a way to lookup based on the ordering of the original array (assembly status)? Or perhaps by using an object for the assembly field keyed on filename (or md5sum)?

Does anyone have experience with this?

Thanks!