title: Ruby 2.0 + Rails 4.0.0.RC1 + bootstrap + Heroku
body: <p>Just started a new app and wanted to try Rails 4.0.0.RC1</p>
  
  <p>After reading some migration tutorials on the topic, I have the app working in development with Ruby 2.0, Rails 4.0.0.RC1, Bootstrap with Sass, Devise … and some custom sass stylesheets.</p>
  
  <p>Today I have tried to deploy to Heroku. The app works but I have some problem with the assets. No styles are applied (also images are not displayed).</p>
  
  <p>When I deploy, I can see on the log that assets are precompiled, but when I start the app, they are not loaded. I get the following error:</p>
  
  <pre><code>013-06-05T15:25:14.874303+00:00 heroku[router]: at=info method=GET path=/assets/logo-c580c24dad2871fc6515842fd30b1e92.png host=finanty-staging.herokuapp.com fwd="83.63.156.134" dyno=web.1 connect=0ms service=4ms status=404 bytes=1351
  2013-06-05T15:25:14.883538+00:00 heroku[router]: at=info method=GET path=/assets/banner-25f5a47ec97eb21c636d94a061c3ec34.png host=finanty-staging.herokuapp.com fwd="83.63.156.134" dyno=web.1 connect=0ms service=4ms status=404 bytes=1351
  2013-06-05T15:25:15.009161+00:00 heroku[router]: at=info method=GET path=/favicon.ico host=finanty-staging.herokuapp.com fwd="83.63.156.134" dyno=web.1 connect=0ms service=4ms status=404 bytes=1351
  2013-06-05T15:25:15+00:00 app[web.1]:   vendor/bundle/ruby/2.0.0/gems/actionpack-4.0.0.rc1/lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  2013-06-05T15:25:14.751092+00:00 heroku[router]: at=info method=GET path=/assets/application-8d76cba6ab1b7263edea41a06d7729ce.js host=finanty-staging.herokuapp.com fwd="83.63.156.134" dyno=web.1 connect=0ms service=4ms status=404 bytes=1351
  </code></pre>
  
  <p>I have already Googled the problem and tried some solutions I found without success.
  Already tried to precompiling assets and including Heroku’s  gems:
      gem 'rails_log_stdout', github: 'heroku/rails_log_stdout'
      gem 'rails3_serve_static_assets', github: 'heroku/rails3_serve_static_assets'</p>
  
  <p>Any suggestions?</p>
  
  <p>This is my current gemfile:</p>
  
  <pre><code>source 'https://rubygems.org'
  ruby "2.0.0"
  gem 'rails', '4.0.0.rc1'
  gem 'sass-rails', '~&gt; 4.0.0.rc1'
  gem 'uglifier', '&gt;= 1.3.0'
  gem 'coffee-rails', '~&gt; 4.0.0'
  gem 'jquery-rails'
  gem 'turbolinks'
  gem 'jbuilder', '~&gt; 1.4.1'
  gem "cancan", "~&gt; 1.6"
  gem "rolify",        :git =&gt; "git://github.com/EppO/rolify.git"
  gem "devise", "~&gt; 3.0.0.rc"
  gem "bootstrap-sass", "~&gt; 2.3.1.2"
  gem "font-awesome-sass-rails", "~&gt; 3.0.2.2"
  gem "simple_form", "~&gt; 3.0.0.rc"
  gem "figaro", "~&gt; 0.6.4"
  gem "haml-rails", "~&gt; 0.4"
  
  group :test do
    gem "capybara", "~&gt; 2.1.0"
    gem "capybara-email", "~&gt; 2.1.0"
    gem "database_cleaner", "~&gt; 1.0.1"
    gem "email_spec", "~&gt; 1.4.0"
    gem "shoulda-matchers", "~&gt; 2.1.0"
  end
  group :development do
    gem "better_errors", "~&gt; 0.9.0"
    gem "html2haml", "~&gt; 1.0.1"
    gem "letter_opener", "~&gt; 1.1.1"
    gem "quiet_assets", "~&gt; 1.0.2"
  end
  group :test, :development do
    gem "rspec-rails", "~&gt; 2.13.2"
    gem "fabrication", "~&gt; 2.7.1"
    gem "faker", "~&gt; 1.1.2"
    gem "pry", "~&gt; 0.9.12.2"
    gem "pry-nav", "~&gt; 0.2.3"
    gem "binding_of_caller", "~&gt; 0.7.1"
    gem "sqlite3"
  end
  group :production do
    gem "unicorn", "~&gt; 4.6.2"
    gem "pg", "~&gt; 0.15.1"
    gem 'rails_log_stdout',           github: 'heroku/rails_log_stdout'
    gem 'rails3_serve_static_assets', github: 'heroku/rails3_serve_static_assets'
  end
  group :doc do
    # bundle exec rake doc:rails generates the API under doc/api.
    gem 'sdoc', require: false
  end
  </code></pre>
  
  <p><strong>### UPDATED WITH HEROKU OUTPUTLOG AND ENVIROMENT FILE</strong></p>
  
  <p>HEROKU OUTPUT</p>
  
  <pre><code>[abibiano:~/Development/finanty (master)]$ git push staging master &gt; ~\heroku.log
  Counting objects: 7, done.
  Compressing objects: 100% (4/4), done.
  Writing objects: 100% (4/4), 377 bytes, done.
  Total 4 (delta 3), reused 0 (delta 0)
  
  -----&gt; Ruby/Rails app detected
  -----&gt; Using Ruby version: ruby-2.0.0
  -----&gt; Installing dependencies using Bundler version 1.3.2
         Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin --deployment
         Using rake (10.0.4)
         Using i18n (0.6.4)
         Using minitest (4.7.4)
         Using multi_json (1.7.4)
         Using atomic (1.1.9)
         Using thread_safe (0.1.0)
         Using tzinfo (0.3.37)
         Using activesupport (4.0.0.rc1)
         Using builder (3.1.4)
         Using erubis (2.7.0)
         Using rack (1.5.2)
         Using rack-test (0.6.2)
         Using actionpack (4.0.0.rc1)
         Using mime-types (1.23)
         Using polyglot (0.3.3)
         Using treetop (1.4.12)
         Using mail (2.5.4)
         Using actionmailer (4.0.0.rc1)
         Using activemodel (4.0.0.rc1)
         Using activerecord-deprecated_finders (1.0.2)
         Using arel (4.0.0)
         Using activerecord (4.0.0.rc1)
         Using bcrypt-ruby (3.0.1)
         Using sass (3.2.9)
         Using bootstrap-sass (2.3.1.2)
         Using cancan (1.6.10)
         Using coffee-script-source (1.6.2)
         Using execjs (1.4.0)
         Using coffee-script (2.2.0)
         Using thor (0.18.1)
         Using railties (4.0.0.rc1)
         Using coffee-rails (4.0.0)
         Using orm_adapter (0.4.0)
         Using warden (1.2.1)
         Using devise (3.0.0.rc)
         Using bundler (1.3.2)
         Using hike (1.2.2)
         Using tilt (1.4.1)
         Using sprockets (2.10.0)
         Using sprockets-rails (2.0.0.rc4)
         Using rails (4.0.0.rc1)
         Using figaro (0.6.4)
         Using sass-rails (4.0.0.rc1)
         Using font-awesome-sass-rails (3.0.2.2)
         Using haml (4.0.2)
         Using haml-rails (0.4)
         Using jbuilder (1.4.1)
         Using jquery-rails (2.2.1)
         Using json (1.8.0)
         Using kgio (2.8.0)
         Using pg (0.15.1)
         Using rails3_serve_static_assets (0.0.1) from git://github.com/heroku/rails3_serve_static_assets.git (at master)
         Using rails_log_stdout (0.0.1) from git://github.com/heroku/rails_log_stdout.git (at master)
         Using raindrops (0.11.0)
         Using rdoc (3.12.2)
         Using rolify (3.3.0.rc4) from git://github.com/EppO/rolify.git (at master)
         Using sdoc (0.3.20)
         Using simple_form (3.0.0.rc)
         Using turbolinks (1.1.1)
         Using uglifier (2.1.0)
         Using unicorn (4.6.2)
         Your bundle is complete! It was installed into ./vendor/bundle
         Cleaning up the bundler cache.
  -----&gt; Preparing app for Rails asset pipeline
         Running: rake assets:precompile
         I, [2013-06-06T07:37:16.836153 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/Apache License Version 2-4fbe59582e5aad1a405d789396ca29ac.txt
         I, [2013-06-06T07:37:16.841645 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Bold-webfont-fdb9ade201b65c0d52fa604fc3c4038d.eot
         I, [2013-06-06T07:37:17.173555 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Bold-webfont-2fa0527e93e9cb49943caec3f494fda6.svg
         I, [2013-06-06T07:37:18.715411 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Bold-webfont-b60a3804cef46ca9126b948bf7c7abdd.ttf
         I, [2013-06-06T07:37:22.979737 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Bold-webfont-a10f60b9bfead198bafcadc407d7ea45.woff
         I, [2013-06-06T07:37:24.726840 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-BoldItalic-webfont-99427976b80607502900b30c83fc15cc.eot
         I, [2013-06-06T07:37:26.398061 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-BoldItalic-webfont-b6866087b55f4d355807e4a6ba9a67b6.svg
         I, [2013-06-06T07:37:27.138720 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-BoldItalic-webfont-02efeadc2bf66c0699e61f698a531fbe.ttf
         I, [2013-06-06T07:37:27.327672 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-BoldItalic-webfont-8fae2aa8680e75ab0f9e8098f77b22c1.woff
         I, [2013-06-06T07:37:29.476265 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-ExtraBold-webfont-24a94c91ee62eb693997964f849b775c.eot
         I, [2013-06-06T07:37:33.101954 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-ExtraBold-webfont-98cbd2403d0d075a76b10aadcfd64362.svg
         I, [2013-06-06T07:37:33.915024 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-ExtraBold-webfont-5f24d69329e91023a639e47dcb0ca732.ttf
         I, [2013-06-06T07:37:35.001425 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-ExtraBold-webfont-43e2e4472be04c8df6eca1c043d293fe.woff
         I, [2013-06-06T07:37:37.723927 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-ExtraBoldItalic-webfont-dd7801590c36df39cec7852cd3338a3a.eot
         I, [2013-06-06T07:37:40.125985 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-ExtraBoldItalic-webfont-9e549205a163455b6cb10f8c015adde7.svg
         I, [2013-06-06T07:37:44.629199 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-ExtraBoldItalic-webfont-9d7f7302bad42da4f2bf920a1d0e58b8.ttf
         I, [2013-06-06T07:37:45.603731 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-ExtraBoldItalic-webfont-2bd51857319d9ca71388686b298606c4.woff
         I, [2013-06-06T07:37:49.745637 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Italic-webfont-47a948e0b3ff9728d9335417ad999943.eot
         I, [2013-06-06T07:37:49.999723 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Italic-webfont-b202837471fc4c196a6f3dafff1cd0d3.svg
         I, [2013-06-06T07:37:50.132504 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Italic-webfont-c8441dbfa5423fd682fbe7bf78cd5cca.ttf
         I, [2013-06-06T07:37:50.317687 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Italic-webfont-d603a0227d2b76009c08db1073beb173.woff
         I, [2013-06-06T07:37:50.578619 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Light-webfont-39498b2896a3e99791adae2a92c6fb92.eot
         I, [2013-06-06T07:37:50.694793 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Light-webfont-082e59aa8e5531ababdb759127064b22.svg
         I, [2013-06-06T07:37:51.034404 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Light-webfont-2c4c3a429426b226b95ace57356b8d45.ttf
         I, [2013-06-06T07:37:51.402217 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Light-webfont-cdcecd01d9ab57d6b6f85139a55470be.woff
         I, [2013-06-06T07:37:51.622895 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-LightItalic-webfont-9c9abd2141528c54eb5debfea82a9640.eot
         I, [2013-06-06T07:37:51.846528 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-LightItalic-webfont-3935e471fb1fab8e4f122e33ee73614b.svg
         I, [2013-06-06T07:37:52.124299 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-LightItalic-webfont-2c42486a6c1927f94f1ba17cc9158fc2.ttf
         I, [2013-06-06T07:37:52.507480 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-LightItalic-webfont-edffcb2690b2bdd5f7e0c91e3166a224.woff
         I, [2013-06-06T07:37:52.897211 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Regular-webfont-bd488806819ed5cb79ebbe415f8ec336.eot
         I, [2013-06-06T07:37:53.325478 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Regular-webfont-337edf5323c855c6df491ae12a830af6.svg
         I, [2013-06-06T07:37:53.488674 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Regular-webfont-66420351d48ae7a8a7fb448fd06fe740.ttf
         I, [2013-06-06T07:37:53.590615 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Regular-webfont-07366fdff682934bafef5962ea1f39a7.woff
         I, [2013-06-06T07:37:53.786816 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Semibold-webfont-8b84e74812ab41a0d4b304cb4d9c94c2.eot
         I, [2013-06-06T07:37:53.859293 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Semibold-webfont-94e6d7af3f7108e9b4eff8da8bd9487b.svg
         I, [2013-06-06T07:37:54.034925 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Semibold-webfont-e0f277ee3b359d387ac633dd3240b186.ttf
         I, [2013-06-06T07:37:55.748157 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-Semibold-webfont-35f0d886332d57fc5cc8a1c037f7af79.woff
         I, [2013-06-06T07:37:55.794748 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-SemiboldItalic-webfont-9ca3a1ca26a59a4109bb8ac8b967b218.eot
         I, [2013-06-06T07:37:56.285810 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-SemiboldItalic-webfont-3e58592ad30d17dacc42e3f37eed2ff9.svg
         I, [2013-06-06T07:37:56.453714 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-SemiboldItalic-webfont-02299aaa6af5b48ecd73d521887ac49f.ttf
         I, [2013-06-06T07:37:56.600516 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/open-sans/OpenSans-SemiboldItalic-webfont-fd03f53c3fb90ccc248bf7ddb842efa2.woff
         I, [2013-06-06T07:37:56.753131 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/banner-25f5a47ec97eb21c636d94a061c3ec34.png
         I, [2013-06-06T07:37:56.896181 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/finanty_logo_32-d17a2835fa9bd5b570f10c4550ea2ebf.png
         I, [2013-06-06T07:37:56.986165 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/logo-c580c24dad2871fc6515842fd30b1e92.png
         I, [2013-06-06T07:38:01.826635 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/application-8d76cba6ab1b7263edea41a06d7729ce.js
         I, [2013-06-06T07:38:05.842219 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/application-c070e38f0f10779f6b4b776c20186bac.css
         I, [2013-06-06T07:38:05.854846 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/FontAwesome-f9ff08ec61a1d49230dcc790375b5ed1.otf
         I, [2013-06-06T07:38:06.142316 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/fontawesome-webfont-870afe701dcdde804cfe997f73cec44c.eot
         I, [2013-06-06T07:38:06.225915 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/fontawesome-webfont-bacb333cfb37308468da2e57052b9bab.ttf
         I, [2013-06-06T07:38:06.618678 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/fontawesome-webfont-e70f92449ebfddada3d455eb44542655.woff
         I, [2013-06-06T07:38:06.826000 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/glyphicons-halflings-white-2fa53df59ca25ee50f59f971c0c9175d.png
         I, [2013-06-06T07:38:07.044590 #1452]  INFO -- : Writing /tmp/build_2yy5wby4xn137/public/assets/glyphicons-halflings-4e5b89324f1ac987ddf6835ef51f5fe9.png
         Asset precompilation completed (54.69s)
  -----&gt; Rails plugin injection
  -----&gt; Discovering process types
         Procfile declares types      -&gt; (none)
         Default types for Ruby/Rails -&gt; console, rake, web, worker
  
  -----&gt; Compiled slug size: 38.0MB
  -----&gt; Launching... done, v18
         http://finanty-staging.herokuapp.com deployed to Heroku
  
  To git@heroku.com:finanty-staging.git
     952b326..05c09af  master -&gt; master
  </code></pre>
  
  <p><strong>environments/staging.rb</strong></p>
  
  <pre><code>Finanty::Application.configure do
    # Settings specified here will take precedence over those in config/application.rb.
  
    # Code is not reloaded between requests.
    config.cache_classes = true
  
    # Eager load code on boot. This eager loads most of Rails and
    # your application in memory, allowing both thread web servers
    # and those relying on copy on write to perform better.
    # Rake tasks automatically ignore this option for performance.
    config.eager_load = true
  
    # Full error reports are disabled and caching is turned on.
    config.consider_all_requests_local       = false
    config.action_controller.perform_caching = true
  
    # Enable Rack::Cache to put a simple HTTP cache in front of your application
    # Add `rack-cache` to your Gemfile before enabling this.
    # For large-scale production use, consider using a caching reverse proxy like nginx, varnish or squid.
    # config.action_dispatch.rack_cache = true
  
    # Disable Rails's static asset server (Apache or nginx will already do this).
    config.serve_static_assets = false
  
    # Compress JavaScripts and CSS.
    config.assets.js_compressor = :uglifier
    # config.assets.css_compressor = :sass
  
    # Do not fallback to assets pipeline if a precompiled asset is missed.
    config.assets.compile = false
  
    # Generate digests for assets URLs.
    config.assets.digest = true
  
    # Version of your assets, change this if you want to expire all your assets.
    config.assets.version = '1.0'
  
    # Specifies the header that your server uses for sending files.
    # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for apache
    # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx
  
    # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
    # config.force_ssl = true
  
    # Set to :debug to see everything in the log.
    config.log_level = :info
  
    # Prepend all log lines with the following tags.
    # config.log_tags = [ :subdomain, :uuid ]
  
    # Use a different logger for distributed setups.
    # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
  
    # Use a different cache store in production.
    # config.cache_store = :mem_cache_store
  
    # Enable serving of images, stylesheets, and JavaScripts from an asset server.
    # config.action_controller.asset_host = "http://assets.example.com"
  
    # Precompile additional assets.
    # application.js, application.css, and all non-JS/CSS in app/assets folder are already added.
    # config.assets.precompile += %w( search.js )
  
    # Ignore bad email addresses and do not raise email delivery errors.
    # Set this to true and configure the email server for immediate delivery to raise delivery errors.
    # config.action_mailer.raise_delivery_errors = false
  
    # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
    # the I18n.default_locale when a translation can not be found).
    config.i18n.fallbacks = true
  
    # Send deprecation notices to registered listeners.
    config.active_support.deprecation = :notify
  
    # Disable automatic flushing of the log to improve performance.
    # config.autoflush_log = false
  
    # Use default logging formatter so that PID and timestamp are not suppressed.
    config.log_formatter = ::Logger::Formatter.new
  
    config.action_mailer.delivery_method = :smtp
  
    config.action_mailer.smtp_settings = {
      port:           587,
      address:        'smtp.gmail.com',
      user_name:      ENV['GMAIL_USERNAME'],
      password:       ENV['GMAIL_PASSWORD'],
      domain:         'finanty.com',
      authentication: :plain,
      enable_starttls_auto: true,
    }
    config.action_mailer.default_url_options = {
      host: "finanty.com"
    }
  end
  
  module HttpBasicAuth
    module ActionController
      def self.include(ac)
        ac.send(:http_basic_authenticate_with, {name: ENV['STAGING_USERNAME'], password: ENV['STAGING_PASSWORD']})
      end
    end
  end
  
  ActionController::Base.send(:include, HttpBasicAuth::ActionController)
  </code></pre>
  
  <p>The environment variable on Heroku is set to staging</p>