How to, only upload files that haven't previously been uploaded

Uppy
1

Is there a way to check if a file has already been uploaded previously? so we don’t upload these again

many thanks

2

If you try to upload the same file in the same session, uppy will know and prevent it. But if the user comes back at a later time then uppy doesn’t know. Depending on where you upload, you might be able to create a pre-processor that checks it.

3

Hi Merlijn,
Yes if a user comes back at a later time

Any thoughts how you would go about this?

many thanks

4

Example pre-processor: Building plugins | Uppy

Perhaps you could try to save the file IDs you get back from events, such as upload-success or complete, and put those in local storage.

Then in your pre-processor, or perhaps in onBeforeFileAdded, you check wether the ID already exists.

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