ruby-on-rails-3 - 设计 Backbone Heroku 和 require.js on Rails 配置

标签 ruby-on-rails-3 backbone.js heroku devise requirejs

好的，所以我知道我正在和这里的大男孩和女孩一起玩弄前端和后端 MVC(即使 bbone 不完全是 MVC)的应用程序，但这是我工作过的第一个真正强大的应用程序不幸的是，在学术领域，没有支持，尤其是更前沿的支持，所以我提前表示感谢。

我在尝试使用 Rails (3.2.2) 应用程序部署到 Heroku 时遇到了一些错误，并且 Assets 管道一直在引发问题。由于我在前端使用 BBone，并且 [single]page[app] 需要知道加载图像和声音的路径，因此我不得不使用 this gist 将图像路径附加到 App.assets 以传递给require.js 的 application.js 文件，用于启动在前端构建的应用程序。

问题似乎是 Devise 想要:config.assets.initialize_on_precompile = false 而 require 想要:config.assets.initialize_on_precompile = true 而 Heroku 希望在 production.rb 文件中为:config.assets.compile = true。

我得到的错误是在 gist 文件 assets.js.erb 中调用数据库以获取 Song 模型中的所有歌曲，倒数第二行

App = {};
App.assets = {
  // Returns an object containing all of asset pipeline's image paths.
  //
  // Sample:
  //
  // {
  //   avatars/missing_avatar.png: "/assets/avatars/missing_avatar.png"
  //   chosen-sprite.png: "/assets/chosen-sprite.png"
  //   circle_green.png: "/assets/circle_green.png"
  //   circle_orange.png: "/assets/circle_orange.png"
  //   circle_red.png: "/assets/circle_red.png"
  //   circle_yellow.png: "/assets/circle_yellow.png"
  //   document.png: "/assets/document.png"
  // }
  //

  // This hash is because Rails' Asset Pipeline bundles the routes to files
  // per user session, then hands that to the user's session browser, for security.
  // So we create in Ruby (erb = embedded ruby) a hash of the images to be accessed
  // in the JS.
  images: {
    <% AssetsUtil.images.each do |img| %>
      "<%= img %>" : "<%= asset_path(img) %>",
    <% end %>
  },

  // Return a formatted URL for an asset.
  //
  // Sample:
  //
  // "/assets/document/png."
  //
  path: function(name) {
    // If the file is in our images object, pull the path from there.
    if (this.images && this.images[name]) {
      return this.images[name];
    }

    // Otherwise, create a generic asset path.
    return '/assets/' + name;
  }
};

// Currently this is ALL the songs in the DB, not just the current_user 's songs 
App.songs = {
  songs: <%= Song.all.to_json.html_safe %>
};

在部署到 Heroku 之前按照建议的待办事项尝试 rake assets:precompile 的完整跟踪错误是:

** Invoke assets:precompile (first_time)
** Invoke requirejs:precompile:external (first_time)
** Invoke requirejs:test_node (first_time)
** Execute requirejs:test_node
** Execute requirejs:precompile:external
/Users/me/.rvm/rubies/ruby-1.9.3-p362/bin/ruby /Users/me/.rvm/gems/ruby-1.9.3-p362/bin/rake requirejs:precompile:all RAILS_ENV=production RAILS_GROUPS=assets --trace
** Invoke requirejs:precompile:all (first_time)
** Invoke requirejs:precompile:prepare_source (first_time)
** Invoke requirejs:setup (first_time)
** Invoke assets:environment (first_time)
** Invoke requirejs:precompile:disable_js_compressor (first_time)
** Execute requirejs:precompile:disable_js_compressor
** Execute assets:environment
** Execute requirejs:setup
** Invoke requirejs:clean (first_time)
** Invoke requirejs:setup 
** Execute requirejs:clean
** Execute requirejs:precompile:prepare_source
rake aborted!
uninitialized constant Song
  (in /Users/me/dev/SoundOfFractions/app/assets/javascripts/assets.js.erb)
/Users/me/dev/SoundOfFractions/app/assets/javascripts/assets.js.erb:48:in `block in singletonclass'
/Users/me/dev/SoundOfFractions/app/assets/javascripts/assets.js.erb:65530:in `instance_eval'
/Users/me/dev/SoundOfFractions/app/assets/javascripts/assets.js.erb:65530:in `singletonclass'
/Users/me/dev/SoundOfFractions/app/assets/javascripts/assets.js.erb:65528:in `__tilt_70168709646800'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/tilt-1.3.4/lib/tilt/template.rb:144:in `call'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/tilt-1.3.4/lib/tilt/template.rb:144:in `evaluate'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/tilt-1.3.4/lib/tilt/template.rb:77:in `render'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/context.rb:177:in `block in evaluate'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/context.rb:174:in `each'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/context.rb:174:in `evaluate'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/processed_asset.rb:12:in `initialize'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:241:in `new'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:241:in `block in build_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:262:in `circular_call_protection'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:240:in `build_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/index.rb:89:in `block in build_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/caching.rb:19:in `cache_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/index.rb:88:in `build_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:163:in `find_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/index.rb:56:in `find_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/bundled_asset.rb:16:in `initialize'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:244:in `new'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:244:in `build_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/index.rb:89:in `block in build_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/caching.rb:19:in `cache_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/index.rb:88:in `build_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:163:in `find_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/index.rb:56:in `find_asset'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/requirejs-rails-0.9.1/lib/tasks/requirejs-rails_tasks.rake:94:in `block (4 levels) in <top (required)>'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:212:in `block in each_logical_path'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:200:in `block (2 levels) in each_file'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:190:in `each'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:190:in `each_entry'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:198:in `block in each_file'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:197:in `each'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:197:in `each_file'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/sprockets-2.1.3/lib/sprockets/base.rb:210:in `each_logical_path'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/requirejs-rails-0.9.1/lib/tasks/requirejs-rails_tasks.rake:92:in `block (3 levels) in <top (required)>'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:228:in `call'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:228:in `block in execute'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:223:in `each'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:223:in `execute'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:166:in `block in invoke_with_call_chain'
/Users/me/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:159:in `invoke_with_call_chain'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:187:in `block in invoke_prerequisites'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:185:in `each'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:185:in `invoke_prerequisites'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:165:in `block in invoke_with_call_chain'
/Users/me/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:159:in `invoke_with_call_chain'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:152:in `invoke'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:143:in `invoke_task'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:101:in `block (2 levels) in top_level'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:101:in `each'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:101:in `block in top_level'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:110:in `run_with_threads'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:95:in `top_level'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:73:in `block in run'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:70:in `run'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/bin/rake:33:in `<top (required)>'
/Users/me/.rvm/gems/ruby-1.9.3-p362/bin/rake:19:in `load'
/Users/me/.rvm/gems/ruby-1.9.3-p362/bin/rake:19:in `<main>'
Tasks: TOP => requirejs:precompile:all => requirejs:precompile:prepare_source
rake aborted!
Command failed with status (1): [/Users/me/.rvm/rubies/ruby-1.9.3-p362...]
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/file_utils.rb:53:in `block in create_shell_runner'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/file_utils.rb:45:in `call'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/file_utils.rb:45:in `sh'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/file_utils_ext.rb:40:in `sh'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/file_utils.rb:80:in `ruby'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/file_utils_ext.rb:40:in `ruby'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/actionpack-3.2.2/lib/sprockets/assets.rake:12:in `ruby_rake_task'
/Users/me/.rvm/gems/ruby-1.9.3-p362/gems/requirejs-rails-0.9.1/lib/tasks/requirejs-rails_tasks.rake:85:in `block (3 levels) in <top (required)>'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:228:in `call'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:228:in `block in execute'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:223:in `each'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:223:in `execute'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:166:in `block in invoke_with_call_chain'
/Users/me/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:159:in `invoke_with_call_chain'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:187:in `block in invoke_prerequisites'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:185:in `each'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:185:in `invoke_prerequisites'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:165:in `block in invoke_with_call_chain'
/Users/me/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:159:in `invoke_with_call_chain'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/task.rb:152:in `invoke'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:143:in `invoke_task'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:101:in `block (2 levels) in top_level'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:101:in `each'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:101:in `block in top_level'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:110:in `run_with_threads'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:95:in `top_level'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:73:in `block in run'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/lib/rake/application.rb:70:in `run'
/Users/me/.rvm/gems/ruby-1.9.3-p362@global/gems/rake-10.0.3/bin/rake:33:in `<top (required)>'
/Users/me/.rvm/gems/ruby-1.9.3-p362/bin/rake:19:in `load'
/Users/me/.rvm/gems/ruby-1.9.3-p362/bin/rake:19:in `<main>'
/Users/me/.rvm/gems/ruby-1.9.3-p362/bin/ruby_noexec_wrapper:14:in `eval'
/Users/me/.rvm/gems/ruby-1.9.3-p362/bin/ruby_noexec_wrapper:14:in `<main>'
Tasks: TOP => assets:precompile => requirejs:precompile:external

gem 文件:

source 'https://rubygems.org'

gem 'rails', '3.2.2'

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

group :development, :test do
  gem 'railroady'
  gem 'sqlite3'
  # For linux support
  gem 'therubyracer'
end

group :production do
  gem 'pg'
  gem 'thin'
end

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  gem 'uglifier', '>= 1.0.3'
end

# gem "better_errors", ">= 0.2.0", :group => :development
# gem "binding_of_caller", ">= 0.6.8", :group => :development

gem 'sass-rails',   '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'

gem 'jquery-rails'
gem 'rails-backbone'
gem "bootstrap-sass", "~> 2.3.0.0"
gem 'requirejs-rails'
gem 'ejs'
gem 'devise'


gem "better_errors", ">= 0.2.0", :group => :development
gem "binding_of_caller", ">= 0.6.8", :group => :development
gem 'color_routes'
gem 'gon'

那么我应该从哪里开始配置才能完成部署？

潜在信息: 如果您观看如何从 Railscasts here 制作自定义 rake 任务，运行自定义 rake 任务时会发生相同的错误，Ryan 解释说该任务无法访问数据库，因为自定义任务需要 => :environment dependency(~4:15 在电影)来访问用户类。由于预编译无法访问歌曲模型，我如何提供与 application.js file 相同或相似的依赖项？

其他信息:

据我了解 Assets 管道的工作方式是针对每个 session ，它捆绑路径(因此当您键入类似 <%= link_to 'Sign in', new_user_path %> 的内容时，rails 在 Assets 管道中定义这些路径，并将其提供给用户。因为 Backbone 是客户端侧渲染，它需要知道页面从 Rails 服务器传递后图像和声音的路径，我发现唯一的方法是上面列出的要点，它将“ Assets ”捆绑到 JS ，一种与 gem 'gon' 类似的方法，它为页面提供全局变量。我当然在新的领域中工作，并且愿意重组，但它在 dev 模式下工作，所以我也在尝试找出 production。

最佳答案

在 heroku Assets 预编译期间，您无法使用 Rails 环境。因为它们只制作一次而不会再次刷新，所以会告诉下一次部署。话虽如此。您应该将与动态数据库相关的调用移至您的 View ，并通过 API 调用或通过将 Javascript 写入 json 中 dom 中的脚本标记来“引导”数据来呈现数据。我通常有 window.NAME_OF_APPLICATION.collections.SONGS，所以我可以在全局范围内使用它们。

例子。 

:javascript
  window.lineItems = {lineItems: #{ @order.line_items.order("position").to_json( :include => :department).html_safe}, order: #{@order.to_json} }

当 Backbone 上线时，让它调用这些项目。并为他们初始化一个集合。

关于ruby-on-rails-3 - 设计 Backbone Heroku 和 require.js on Rails 配置，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15194099/

上一篇：parsing - NASM 解析 Ascii 字符显示

下一篇：symfony - "This value is not valid"在 symfony2.1 上的 "query_builder"buildForm 上使用 "entity"

相关文章：

ruby-on-rails-3 - 轨道中的对象负载过早

ruby-on-rails - rails : form_for with field for Hash

python - ValueError at/(未设置所需的参数名称)

ruby-on-rails - 允许在数字字段中使用逗号

ruby - Rails current_path helper ？

javascript - 在新窗口中打开页面上的 div，同时保持通过 websocket 更新它的能力

javascript - 在 Backbone 应用程序中使用时焦点+上下文图中的解析错误

javascript - Backbone 和 Express 路由器可以在 Express 应用程序中协同工作吗？

django - 我们是否必须将 staticfiles 文件夹部署到 heroku？

python - 通过 Heroku 部署 Python 应用程序时出现 NoSectionError

©2024 IT工具网  联系我们