Sinatra + Bundler ?

Question

I'm wondering how a one can use Bundler with Sinatra. The idea is to use the gems that Bundler downloads inside the .gems folder.

Answer 1

Inside your Sinatra app, you just have to require the bundler environment.rb:

require 'vendor/gems/environment.rb'
require 'sinatra'

get '/' do
  "Hello world!"
end

Alternatively, if you don't want to add the additional require at the top of your app, you can instead invoke sinatra via gem exec (e.g. gem exec ruby myapp.rb)

This assumes that you have a Gemfile in the root of your application. It might look like this:

gem "sinatra", "0.9.4"

This also assumes that you've already installed bundler (sudo gem install bundler) and that you ran gem bundle to put all the gem dependencies listed in your Gemfile under vendor/gems.

Answer 2

I believe the best way is described here on EngineYard blog.

Answer 3

There's a simple guide on the bundler website.