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Rails provides several help...
Setup your development environment.
Configure your production server.
Learn how to modify production to run websockets.
Adding user avatars is pretty easy using Rails' ActiveStorage feature. We'll be using Devise in this example, but this applies to any user authentication system.
Learn how to enable direct uploads in the browser to Amazon S3 or DigitalOcean Spaces using Rails' new ActiveStorage library
Now that the Paperclip gem has been deprecated, it's recommended that you migrate your apps to ActiveStorage
Easily add file uploads to any model (including single or multiple files) using Rails 5.2's new ActiveStorage feature
Learn how to upload files to DigitalOcean's Spaces which is an Amazon S3 compatible file storage API
Learn how to implement multiple file uploads in your app using Shrine and jQuery File Upload
Transcode videos in the background using Shrine
Using jQuery File Upload to upload presigned files directly to Amazon S3 and then store them with Shrine
Setup Shrine to upload files to Amazon S3
Setup your Amazon S3 account to receive direct file uploads from users using Shrine in your Rails app
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