title: rake assets:precompile stuck
body: <p>couple of days ago i noticed that jquery calendar is not working on my deployment site(heroku). on digging out the problem i noticed that source of site on my dev server has some 100 script tags related to bootstrap(i am using twitter bootstrap css) but on prod server. i have 4 script tags. on searching i found that i should run <code>rake assets:precompile</code> on my rails console fo asset pipeline. but while running it is taking terribly long time, last time it took 6 hours and i had to abort it.</p>
  
  <p>referring to many sites and post, i found that i should change <code>config.serve_static_assets</code>to <code>true</code> and <code>config.assets.compile</code> to <code>true</code>. but problem is still there. i also tried to remove <code>jquery-rails/jquery-ui-rails</code> from <code>gem</code>but problem is still there.
  here is my <code>config/environmnets/production.rb</code></p>
  
  <pre><code>ProductRecall::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
  
    # Full error reports are disabled and caching is turned on
    config.consider_all_requests_local       = false
    config.action_controller.perform_caching = true
  
    # Disable Rails's static asset server (Apache or nginx will already do this)
    config.serve_static_assets = true
  
    # Compress JavaScripts and CSS
    config.assets.compress = true
  
    # Don't fallback to assets pipeline if a precompiled asset is missed
    config.assets.compile = true
  
    # Generate digests for assets URLs
    config.assets.digest = true
  
  
  
    # 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
  
    # 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
  
    # Log the query plan for queries taking more than this (works
    # with SQLite, MySQL, and PostgreSQL)
    # config.active_record.auto_explain_threshold_in_seconds = 0.5
  
    config.action_controller.perform_caching  = false
  end
  </code></pre>
  
  <p>my <code>config/application.rb</code> looks like this</p>
  
  <pre><code>require File.expand_path('../boot', __FILE__)
  
  # Pick the frameworks you want:
  require "active_record/railtie"
  require "action_controller/railtie"
  require "action_mailer/railtie"
  require "active_resource/railtie"
  require "sprockets/railtie"
  # require "rails/test_unit/railtie"
  
  if defined?(Bundler)
    # If you precompile assets before deploying to production, use this line
    Bundler.require(*Rails.groups(:assets =&gt; %w(development test)))
    # If you want your assets lazily compiled in production, use this line
    # Bundler.require(:default, :assets, Rails.env)
  end
  
  module ProductRecall
    class Application &lt; Rails::Application
  
      # Configure the default encoding used in templates for Ruby 1.9.
      config.encoding = "utf-8"
  
      # Configure sensitive parameters which will be filtered from the log file.
      config.filter_parameters += [:password]
  
      # Enable escaping HTML in JSON.
      config.active_support.escape_html_entities_in_json = true
  
      # Enforce whitelist mode for mass assignment.
      # This will create an empty whitelist of attributes available for mass-assignment for all models
      # in your app. As such, your models will need to explicitly whitelist or blacklist accessible
      # parameters by using an attr_accessible or attr_protected declaration.
      config.active_record.whitelist_attributes = true
  
      # Enable the asset pipeline
      config.assets.enabled = true
  
      # Version of your assets, change this if you want to expire all your assets
      config.assets.version = '1.0'
      config.action_mailer.default_url_options = { host: 'localhost:3000' }
    end
  end
  </code></pre>
  
  <p>here is my Gem file:</p>
  
  <pre><code>source 'https://rubygems.org'
  
  gem 'rails', '3.2.13'
  gem 'bootstrap-sass', '2.1'
  gem 'bcrypt-ruby', '3.0.1'
  gem 'therubyracer', :platforms =&gt; :ruby, :platforms =&gt; :ruby
  gem 'faker', '1.0.1'
  gem 'will_paginate', '3.0.3'
  gem 'bootstrap-will_paginate', '0.0.6'
  gem 'bootstrap-datepicker-rails'
  gem "google_visualr", "~&gt; 2.1.0" 
  gem 'twitter-bootstrap-rails'
  gem "galetahub-simple_captcha", :require =&gt; "simple_captcha"
  gem 'rufus-scheduler'
  
  group :development, :test do
    gem 'sqlite3', '1.3.5'
    gem 'rspec-rails', '2.11.0'
  end
  
  group :development do
    gem 'annotate', '2.5.0'
  end
  
  group :assets do
    gem 'sass-rails',   '3.2.5'
    gem 'coffee-rails', '3.2.2'
    gem 'uglifier', '1.2.3'
  end
  
  gem 'jquery-rails', '2.0.2'
  
  group :test do
    gem 'capybara', '1.1.2'
    gem 'factory_girl_rails', '4.1.0'
    gem 'cucumber-rails', '1.2.1', :require =&gt; false
    gem 'database_cleaner', '0.7.0'
  end
  
  #gem 'jquery-ui-rails'
  
  group :production do
    gem 'pg', '0.12.2'
  end
  </code></pre>
  
  <p>plz let me know what is wrong here. as i am terribly stuck with no clue since 2 days</p>