Rack:GridFS is a Rack middleware for creating HTTP endpoints for files stored in MongoDB’s GridFS. You can configure a prefix string which will be used to match the path of a request and supply an id for looking up the file in the GridFS store.

For example,

GET '/gridfs/someobjectid'

If the prefix is “gridfs”, then the id will be be “someobjectid”.

This version is currently based on mongo-1.1+. As there were significant changes to the GridFS API prior to v1.0, you may have luck with the git-tagged version 0.2.0 of this library with earlier versions of the driver.

gem install rack-gridfs

require 'rack/gridfs'
use Rack::GridFS, :hostname => 'localhost', :port => 27017, :database => 'test', :prefix => 'gridfs'

You must specify MongoDB database details:

• hostname: the hostname/IP where the MongoDB server is running. Default ‘localhost’.

• port: the port of the MongoDB server. Default 27017.

• database: the MongoDB database to connect to.

• prefix: a string used to match against incoming paths and route to through the middleware. Default ‘gridfs’.

# TODO: THIS COULD USE A LOT MORE EXPLANATION!

require 'rubygems'
require 'sinatra'

require 'rack/gridfs'
use Rack::GridFS, :hostname => 'localhost', :port => 27017, :database => 'test', :prefix => 'gridfs'

get /.*/ do
  "The URL did not match a file in GridFS."
end

Copyright © 2010 Blake Carlson. See LICENSE for details.