How to stream image object in Sinatra

I had uploaded images to 开发者_如何学运维mongoDB using GridFS. I want to retrieve an image from the db and display it in the browser. How to do this with the help of Sinatra and HAML.

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This Sinatra app uses the old GridStore API, but the principle still applies. Create a separate URL for images, set the content type, and call #read on the Grid method:

http://github.com/banker/mongodb_examples/blob/master/tweets/sinatra_tweets.rb