Sinatra + Bundler?

Question

I'm wondering how 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 setup:

require "bundler/setup" require "sinatra"  get "/" do   "Hello world!" end 

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

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

source "http://rubygems.org"  gem "sinatra" 

This also assumes that you've already installed bundler (gem install bundler) and that you ran bundle install to install all the gem dependencies.

Answer 2

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

# This makes sure the bundled gems are in our $LOAD_PATH require File.expand_path(File.join(File.dirname(__FILE__), 'vendor', 'gems', 'environment'))  # This actually requires the bundled gems Bundler.require_env  class MyApp < Sinatra::Base   # stuff end