Get Extension by Mimetype in Rails

Sometimes we need to get an extension by content mime type. There are many ways to manage this but in Rails (or rack-based app) you can use this trick: 1 Rack::Mime::MIME_TYPES.invert['image/jpeg'] # => '.jpg'

A simple way to stream JSON with Rails Live API

A few weeks ago I faced with a requirement to optimize a huge JSON response from Rails-based API. For example, we want to respond large set of data as JSON collection. In our controller, we have some action for that, but rails Live API couldn’t stream JSON or XML directly. But we can use a little trick. 1 2 3 4 5 6 7 class PostsController def index @data = Post....