Snippets for Ruby Sinatra

sinatra.rb

### Spawn a long run process in Sinatra ###
require 'sinatra'
get '/process' do
  child_pid = Process.fork do # spawn a long run process
    tryCitus.setup(config)
    Process.exit
  end
  Process.detach child_pid
##############################


### Href value for CSS and JS file ###
<link href="<%= url('css/bootstrap.min.css') %>" rel="stylesheet">
<script src="<%= url('js/jquery-1.11.1.min.js') %>"></script>
##############################


### Sinatra i18n ###
# i18n/en.yml
login:
    welcome: Please sign in
message:
    successful: Successful!
# i18n/jp.yml
login:
    welcome: ログインしてください
message:
    successful: 成功した！
# app.rb
require 'sinatra'
require 'sinatra/r18n'

enable :sessions
R18n.default_places = './i18n/'
R18n.set('en')
include R18n::Helpers
...
session[:locale] = params[:locale] # setting locale
...
message = t.message.successful # in controller
<%= t.login.welcome %> # in views
...

Note: If your application inherits from Sinatra::Base then also add:
class YourApp < Sinatra::Base
  register Sinatra::R18n
##############################


### Sinatra - Send file to user ###
get '/download/:filename' do |filename|
  send_file "/path/to/#{filename}", :filename => filename, :type => 'Application/octet-stream'
end
##############################


### Sinatra - Deployment with Thin ###
# app.rb
class MyApp < Sinatra::Base
  get '/' do
    ...
  end
  ...
end

# server_thin.rb
#!/usr/bin/env ruby
require 'thin'
require_relative 'app.rb'
server = ::Thin::Server.new('0.0.0.0', 80, MyApp)
server.log_file = "#{File.expand_path(File.dirname(__FILE__))}/log/thin.log"
server.pid_file = "#{File.expand_path(File.dirname(__FILE__))}/thin.pid"
server.daemonize
server.start

# Run
$ ./server_thin.rb