我有这种错误：

ActionController::RoutingError (No route matches [GET] "/assets/logos/opera_logo.png"):
  actionpack (3.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
  actionpack (3.2.1) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  railties (3.2.1) lib/rails/rack/logger.rb:26:in `call_app'
  railties (3.2.1) lib/rails/rack/logger.rb:16:in `call'
  actionpack (3.2.1) lib/action_dispatch/middleware/request_id.rb:22:in `call'
  rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
  rack (1.4.1) lib/rack/runtime.rb:17:in `call'
  activesupport (3.2.1) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.4.1) lib/rack/lock.rb:15:in `call'
  actionpack (3.2.1) lib/action_dispatch/middleware/static.rb:53:in `call'
  railties (3.2.1) lib/rails/engine.rb:479:in `call'
  railties (3.2.1) lib/rails/application.rb:220:in `call'
  rack (1.4.1) lib/rack/content_length.rb:14:in `call'
  railties (3.2.1) lib/rails/rack/log_tailer.rb:14:in `call'
  rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
  /usr/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
  /usr/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
  /usr/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'

Rails没有找到我的所有资产,但我认为它们位于正确的文件夹中(例如app / assets / images / logos /).

我按照本指南升级了我的系统：http://railscasts.com/episodes/318-upgrading-to-rails-3-2?view=asciicast.使用rails 3.1运行得非常好.我没有找到任何其他改变.我能做什么？

这是我的Gemfile：

source 'http://rubygems.org'

gem 'rails','3.2.1'

# Bundle edge Rails instead:
# gem 'rails',:git => 'git://github.com/rails/rails.git'

gem 'sqlite3'


# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails','~> 3.2.3'
  gem 'coffee-rails','~> 3.2.1'
  gem 'uglifier','>= 1.0.3'
end

gem 'jquery-rails'

# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby','~> 3.0.0'

# Use unicorn as the web server
# gem 'unicorn'

# Deploy with Capistrano
# gem 'capistrano'

# To use debugger
gem 'ruby-debug19',:require => 'ruby-debug'

group :test do
  gem 'capybara','1.1.2'
  gem 'rspec-rails','2.8.1'
  gem 'autotest-rails','4.1.1'
  gem 'spork','0.8.5'
  gem 'factory_girl_rails','1.4.0'
  gem 'email_spec','1.2.1'
  gem 'cucumber-rails','1.2.1'
  gem 'launchy','2.0.5'
  gem 'pickle','0.4.10'
  gem 'database_cleaner','0.7.0'
  gem 'simplecov','0.5.4'
  gem 'simplecov-rcov','0.2.3'
  gem "mocha",'0.10.0'
  gem 'capybara-firebug','0.0.10'
  gem "prawn",'0.8.4'
end

group :development do
  gem "nifty-generators",'0.4.6'
end

gem 'active_reload','0.6.1'
gem "galetahub-simple_captcha",'0.1.3',:require => "simple_captcha"
gem 'authlogic','3.1.0'
gem 'Meta_search','1.1.3'
gem 'naive_bayes',:git => 'git://github.com/reddavis/Naive-Bayes.git'

这是我的开发.rb：

Onopia::Application.configure do
  # Settings specified here will take precedence over those in config/application.rb

  # In the development environment your application's code is reloaded on
  # every request.  This slows down response time but is perfect for development
  # since you don't have to restart the web server when you make code changes.
  config.cache_classes = false

  # Log error messages when you accidentally call methods on nil.
  config.whiny_nils = true

  # Show full error reports and disable caching
  config.consider_all_requests_local       = true
  config.action_controller.perform_caching = false

  # Don't care if the mailer can't send
  config.action_mailer.raise_delivery_errors = false

  # Print deprecation notices to the Rails logger
  config.active_support.deprecation = :log

  # Only use best-standards-support built into browsers
  config.action_dispatch.best_standards_support = :builtin

  # Do not compress assets
  config.assets.compress = false

  # Expands the lines which load the assets
  config.assets.debug = true

  # Raise exception on mass assignment protection for Active Record models
  config.active_record.mass_assignment_sanitizer = :strict

  # 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
end

这是我的application.rb：

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 => %w(development test)))
  # If you want your assets lazily compiled in production,use this line
  # Bundler.require(:default,:assets,Rails.env)
end

module Onopia
  class Application < Rails::Application
    # Settings in config/environments/* take precedence over those specified here.
    # Application configuration should go into files in config/initializers
    # -- all .rb files in that directory are automatically loaded.

    # Custom directories with classes and modules you want to be autoloadable.
    # config.autoload_paths += %W(#{config.root}/extras)

    # Only load the plugins named here,in the order given (default is alphabetical).
    # :all can be used as a placeholder for all plugins not explicitly named.
    # config.plugins = [ :exception_notification,:ssl_requirement,:all ]

    # Activate observers that should always be running.
    # config.active_record.observers = :cacher,:garbage_collector,:forum_observer

    # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
    # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
    # config.time_zone = 'Central Time (US & Canada)'

    # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
    # config.i18n.load_path += Dir[Rails.root.join('my','locales','*.{rb,yml}').to_s]
    config.i18n.default_locale = :fr

    # 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 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'

    # Configure generators values. Many other options are available,# be sure to check the documentation.
    #config.generators do |g|
    #  g.test_framework :rspec,:fixture => false
    #end

    config.action_mailer.default_url_options = { :host => 'localhost:3000' }
  end
end

编辑：一个更好的例子.

我想查看此文件：

app/assets/javascripts/application.js

当我去这个网址时：

07001

我有这个错误：

Started GET "/assets/application.js" for 127.0.0.1 at 2012-02-06 17:04:38 -0500
Served asset /application.js - 404 Not Found (1ms)

ActionController::RoutingError (No route matches [GET] "/assets/application.js"):
  actionpack (3.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
  actionpack (3.2.1) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  railties (3.2.1) lib/rails/rack/logger.rb:26:in `call_app'
  railties (3.2.1) lib/rails/rack/logger.rb:16:in `call'
  actionpack (3.2.1) lib/action_dispatch/middleware/request_id.rb:22:in `call'
  rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
  rack (1.4.1) lib/rack/runtime.rb:17:in `call'
  activesupport (3.2.1) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.4.1) lib/rack/lock.rb:15:in `call'
  actionpack (3.2.1) lib/action_dispatch/middleware/static.rb:53:in `call'
  railties (3.2.1) lib/rails/engine.rb:479:in `call'
  railties (3.2.1) lib/rails/application.rb:220:in `call'
  rack (1.4.1) lib/rack/content_length.rb:14:in `call'
  railties (3.2.1) lib/rails/rack/log_tailer.rb:14:in `call'
  rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
  /usr/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
  /usr/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
  /usr/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'

非常感谢,祝你有个愉快的一天.