Event onBeforeUpload Async

[guiraamos]

Hi !

I'm trying to perform an async request on the onBeforeUpload commit, but I can not. How should I carry out these cases?

In my example, I make a call to an API that returns an ID, this ID I update the metadata of the files to do the processing on the file server using the TUS protocol.

[jazkh]

onBeforeUpload is a method of an object.

Please show your code to know what have you tried so far.

Here is an example from official docs:

onBeforeUpload: async function (files) {
const updatedFiles = await Object.assign({}, files)
await Object.keys(updatedFiles).forEach(fileId => {
updatedFiles[fileId].name = 'myCustomPrefix_' + updatedFiles[fileId].name
})
return updatedFiles
}

[arturi]

Hi! Sorry for the long delay with my reply. onBeforeUpload is meant for sync checks/work. For async, it’s better to implement a small custom Uppy plugin, we’ve added this info to the docs.

Here’s an example of a small custom plugin that compresses images before upload: https://uppy.io/docs/writing-plugins/#Example-of-a-custom-plugin. In the same manner you can make the call to your API and update files accordingly. Please let me know if this works for you.