Now open the project in your editor of choice. Now you can migrate your database: $ rake db:migrate $ rails generate scaffold user name avatar_urlĬreate db/migrate/20140519195131_create_users.rb You can follow along from scratch if you do not yet have a project: $ rails new direct-s3-example This also assumes that you’ve got a UsersController. Example appįor the purpose of this example, we will assume you have a User model and that you want to store an avatar for each user on S3. On the Rails side create an AWS presigned-post and store the image URL in the database. The UI behavior is very customizable, and the behavior from a user perspective is very simple. There are other libraries such as carrier wave direct that may also be able to enable you to upload your images directly to S3, however without the low level knowledge of all the client side considerations implementing them can be difficult.īy using the jQuery-File-Upload plugin we will create a relatively readable and short JavaScript code that can be re-used on any form using an image upload input. This article uses the jQuery-File-Upload plugin and the AWS gem. This article shows how to accomplish this. The only downside is that all the logic must be performed on the client side. This way it does not matter if our dyno is restarted while the image is uploaded, your dyno does not need to handle the extra load of image uploads, and you don’t have to wait for the file to upload twice, once to your dyno and once to S3. While this works well for small files, larger files may be deleted from the dyno before they can be uploaded to S3 due to Heroku’s ephemeral filesystem.Ī more stable alternative is to upload the image to S3 directly from the client side, and when the image is fully uploaded save the reference URL in the database. They typically upload the file to Heroku and then stream it to S3. While there are many popular S3 image upload solutions for Ruby and Rails such as Paperclip and CarrierWave, these solutions use the server as a temporary cache. This article demonstrates how to add direct S3 uploads to a Rails app. my-documents/ is the folder you created to store your documents.This article has not been updated to reflect the latest changes in libraries and may no longer work. You will need to inject your bucket name from your environment variables in this service. S3Client is the service (ct_file_store.s3 ) we defined previously extending AWS S3 client with credentials for private bucket. You should define this method in a separate service and use it in the controller. As a result, users will never see the actual route used to download the file. You will need a method to retrieve your files from your private bucket and display it on a custom route. Here is a step by step way to safely give access to these documents to your users. In most cases, your files are stored in private buckets. Display or download documents stored in private buckets The next step is to provide a way to download and display these documents from AWS in your Symfony application. Users are now able to upload files on your Symfony application and these documents are safely stored on Amazon AWS S3 bucket. You should now be able to see this document in your AWS bucket. Navigate to your page, upload a file and submit your form. Install the two bundles and the SDK with composer: AWS-SDK (A SDK provided by Amazon to communicate with AWS API). KNP/Gauffrette (a bundle that will provide an abstraction layer to use uploaded files in your Symfony application without requiring to know where those files are actually stored).
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