Passing response_content_disposition to _url method

[majksner]

Hi there,

I was wondering if it is possible to pass response_content_disposition as a response header with Google Cloud Storage, this works perfectly with S3 Storage.

For example, when using S3:

uploaded_file.file_url(response_content_disposition: ContentDisposition.attachment('file.txt'))

The above example works fine with S3. However, it does not work with Google Cloud Storage.

I couldn't find anything documented about it, except to pass 'Content-Dispositon' as a header at the time of upload via url_options plugin, but I want to pass it at the time of download so the file that is downloaded gets a different name than the file that is actually stored on the Google Cloud Storage.

Thanks!

[renchap]

Hi @majksner

Sorry for the delay, I missed the notification for your question!

As far as I know, header responses can not be modified at response-time on GCS. You need to proxy the response and add the header yourself.

For Rails, the best way would probably be to use open a stream from your file on GCS and use send_data to stream it back to the client with the correct header.

[majksner]

Hi,

I was able to do this by passing

{
    query: {
    'response-content-disposition':
      ActionDispatch::Http::ContentDisposition.format(disposition: 'attachment', filename: 'file.txt')
    }
}

to file_url() method

[renchap]

Oh, I did not know about this query parameter and that you can change the response headers with it on GCS, this might be useful, thanks!