S3 Download Url with attachment attribute (mp3 opens file instead of downloading) about carrierwave-aws HOT 4 CLOSED

hi @musixite Your code is working for aws-sdk-v1, since carrierwave-aws relies on aws-sdk v2, it is not working anymore. However, in v2, aws-sdk has a method :presigned_url defined in Aws::S3::Object, you can use this method to construct the direct download url for a s3 object:

s3 = Aws::S3::Resource.new
# YOUR-OBJECT-KEY should be the relative path of the object like 'uploads/user/logo/123/pic.png'
obj = s3.bucket('YOUR-BUCKET-NAME').object('YOUR-OBJECT-KEY')
url = obj.presined_url(:get, expires_in: 3600, response_content_disposition: "attachment; filename='FILENAME'")

from carrierwave-aws.

You don't get direct access to the S3 object, but you can add custom attributes to it with aws_read_options. This is something you can do for a particular uploader:

  configure do |config|
    config.aws_read_options = {
      content_disposition: 'attachment; filename='hardcoded_filename.mp3'
    }
  end

That will help with reading, but that still requires pulling the data down. Instead, you may want to set the content_disposition when writing the content. In that case, use:

  configure do |config|
    config.aws_write_options = {
      content_disposition: 'attachment'
    }
  end

Hope that helps!

from carrierwave-aws.

I tried to do what you mentioned but this doesn't change the fact that it copies the file first which takes 10-15sec to process. First option is not possible since I need to retrieve the filename from the database.

Still looking!

Thanks for your help,

• Vincent

from carrierwave-aws.

If you write the header along with the content you can just use the generated url rather than copying the file locally. If you have to use read there is no way around downloading the file to the local server.

from carrierwave-aws.