How to get the object url with alias name from aws s3 using CloudFront

Question

I am uploading files with unique id like 'd9127dfd01182afe7d34a37' as object name to amazon s3 and storing the file information with my local database including original name of the file. And I am using CloudFront url to download the file.

If I download the file using CloudFront url file name is d9127dfd01182afe7d34a37. But I need to change file name again to it's original name wich I have in my database. I don't want to download it. I want to give the url with original name to the client(WebUI) and client can download it through url.

serverside code

 document_url = initialize_cloud_service(document.provider['primary']).get_object_url(document_id, expires_at, 'CloudFront' )

if document_url
            item = {}
            item['id'] = document['_id'].to_s
            item['name'] = document['name']
            item['mime_type'] = document['mime_type']
            item['url'] = document_url
     return {success: true, message: MESSAGES['get_url_succuss'],data: item}.to_json
end

client side code

download: function(response){
        file = response.data
        link = document.createElement('a');
        link.download = file.name;
        link.href = file.url;
        link.click();
    },

Is there any way to achieve this? Please help me out. I am using ruby on rails and mongodb as local database. Thanks

Answer 1

I have achieved by doing the following changes

Server Side code

             begin
                expires_at = Time.now.to_i + 30.seconds.to_i

                options = nil
                selected_provider = provider || document.provider['primary']

                case selected_provider
                when "s3"
                    options = {"response-content-disposition" => "attachment; filename=#{document['name']}"}
                    downloadable_url = initialize_cloud_service(selected_provider).get_downloadable_url(document_id, expires_at, options)

                when "google_cloud"
                    downloadable_url = initialize_cloud_service(selected_provider).get_downloadable_url(document_id, expires_at, options)
                    downloadable_url += "&response-content-disposition=attachment%3B%20filename%3D#{document['name']}"
                end

                item = {}
                item['id'] = document['_id'].to_s
                item['name'] = document['name']
                item['mime_type'] = document['mime_type']
                item['url'] = downloadable_url
                return {success: true, message: MESSAGES['get_url_succuss'],data: item}.to_json
            rescue Exception => e
                puts 'Exception in download, message: ' + e.message
                return {success: false, message: MESSAGES['default']}.to_json
            end

client side code

        download: function(response){
        var hiddenIFrameID = 'hiddenDownloader',
        iframe = document.getElementById(hiddenIFrameID);
        if (iframe === null) {
        iframe = document.createElement('iframe');
        iframe.id = hiddenIFrameID;
        iframe.style.display = 'none';
        document.body.appendChild(iframe);
        }
        iframe.src = response.data.url;
    },