Hello! I am using ExAws and the code below to make a presigned request for uploading image files to Amazon S3. All is well except that the permissions on the uploaded file are not being set to public-read:
I think this might simply not be possible. If you take a look at the AWS Java SDK docs, you can see that only a handful of parameters that would usually be sent as headers are supported (there is setContentMd5, setContentType, etc - but not setACL).
Also check out this GitHub issue with two possible workarounds.
I’ve been trying to set the "Content-Disposition" key to attachment via the query_params for the presigned_url in this scenario, but it doesn’t seem to be “taking”. Is there any way to do this here, that is via the ex_aws_s3 upload?
query_params = [
# so the browser will download this as a file