Ruby China
  • 新手问题 (已搞定) at 2012年11月04日

    用 Bootstrap 见http://wrongwaycn.github.com/bootstrap/docs/components.html

  • 北京清華大學 RubyGems 鏡像 at 2012年11月04日

    不是教育网有没有问题

  • undefined method `gsub' for nil:NilClass at 2012年11月03日

    #20 楼 @huacnlee 去掉之后还是不行，还是这个问题

  • undefined method `gsub' for nil:NilClass at 2012年11月03日

    @huacnlee Full Trace:

    /home/victor/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/cgi/util.rb:7:in `escape'
activesupport (3.2.7) lib/active_support/core_ext/object/to_query.rb:10:in `to_query'
activesupport (3.2.7) lib/active_support/core_ext/object/to_param.rb:52:in `block in to_param'
activesupport (3.2.7) lib/active_support/core_ext/object/to_param.rb:51:in `each'
activesupport (3.2.7) lib/active_support/core_ext/object/to_param.rb:51:in `collect'
activesupport (3.2.7) lib/active_support/core_ext/object/to_param.rb:51:in `to_param'
actionpack (3.2.7) lib/action_dispatch/http/url.rb:47:in `url_for'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:590:in `url_for'
actionpack (3.2.7) lib/action_dispatch/routing/url_for.rb:148:in `url_for'
actionpack (3.2.7) lib/action_view/helpers/url_helper.rb:107:in `url_for'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:213:in `post_path'
actionpack (3.2.7) lib/action_dispatch/routing/polymorphic_routes.rb:129:in `polymorphic_url'
actionpack (3.2.7) lib/action_dispatch/routing/polymorphic_routes.rb:135:in `polymorphic_path'
actionpack (3.2.7) lib/action_view/helpers/url_helper.rb:111:in `url_for'
actionpack (3.2.7) lib/action_view/helpers/url_helper.rb:242:in `link_to'
app/views/posts/index.html.erb:6:in `block in _app_views_posts_index_html_erb___207551636_84847140'
activerecord (3.2.7) lib/active_record/relation/delegation.rb:6:in `each'
activerecord (3.2.7) lib/active_record/relation/delegation.rb:6:in `each'
app/views/posts/index.html.erb:3:in `_app_views_posts_index_html_erb___207551636_84847140'
actionpack (3.2.7) lib/action_view/template.rb:145:in `block in render'
activesupport (3.2.7) lib/active_support/notifications.rb:125:in `instrument'
actionpack (3.2.7) lib/action_view/template.rb:143:in `render'
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:47:in `block (2 levels) in render_template'
actionpack (3.2.7) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument'
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `block in instrument'
activesupport (3.2.7) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `instrument'
actionpack (3.2.7) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument'
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:46:in `block in render_template'
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:54:in `render_with_layout'
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:45:in `render_template'
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:18:in `render'
actionpack (3.2.7) lib/action_view/renderer/renderer.rb:36:in `render_template'
actionpack (3.2.7) lib/action_view/renderer/renderer.rb:17:in `render'
actionpack (3.2.7) lib/abstract_controller/rendering.rb:110:in `_render_template'
actionpack (3.2.7) lib/action_controller/metal/streaming.rb:225:in `_render_template'
actionpack (3.2.7) lib/abstract_controller/rendering.rb:103:in `render_to_body'
actionpack (3.2.7) lib/action_controller/metal/renderers.rb:28:in `render_to_body'
actionpack (3.2.7) lib/action_controller/metal/compatibility.rb:50:in `render_to_body'
actionpack (3.2.7) lib/abstract_controller/rendering.rb:88:in `render'
actionpack (3.2.7) lib/action_controller/metal/rendering.rb:16:in `render'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:40:in `block (2 levels) in render'
activesupport (3.2.7) lib/active_support/core_ext/benchmark.rb:5:in `block in ms'
/home/victor/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/benchmark.rb:295:in `realtime'
activesupport (3.2.7) lib/active_support/core_ext/benchmark.rb:5:in `ms'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:40:in `block in render'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:83:in `cleanup_view_runtime'
activerecord (3.2.7) lib/active_record/railties/controller_runtime.rb:24:in `cleanup_view_runtime'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:39:in `render'
actionpack (3.2.7) lib/action_controller/metal/implicit_render.rb:10:in `default_render'
actionpack (3.2.7) lib/action_controller/metal/mime_responds.rb:196:in `respond_to'
app/controllers/posts_controller.rb:12:in `index'
actionpack (3.2.7) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (3.2.7) lib/abstract_controller/base.rb:167:in `process_action'
actionpack (3.2.7) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (3.2.7) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
activesupport (3.2.7) lib/active_support/callbacks.rb:436:in `_run__881899361__process_action__894307140__callbacks'
activesupport (3.2.7) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.7) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
activesupport (3.2.7) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.7) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (3.2.7) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `block in instrument'
activesupport (3.2.7) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `instrument'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
actionpack (3.2.7) lib/action_controller/metal/params_wrapper.rb:207:in `process_action'
activerecord (3.2.7) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (3.2.7) lib/abstract_controller/base.rb:121:in `process'
actionpack (3.2.7) lib/abstract_controller/rendering.rb:45:in `process'
actionpack (3.2.7) lib/action_controller/metal.rb:203:in `dispatch'
actionpack (3.2.7) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
actionpack (3.2.7) lib/action_controller/metal.rb:246:in `block in action'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:73:in `call'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:36:in `call'
journey (1.0.4) lib/journey/router.rb:68:in `block in call'
journey (1.0.4) lib/journey/router.rb:56:in `each'
journey (1.0.4) lib/journey/router.rb:56:in `call'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:600:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
rack (1.4.1) lib/rack/etag.rb:23:in `call'
rack (1.4.1) lib/rack/conditionalget.rb:25:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/head.rb:14:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/flash.rb:242:in `call'
rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context'
rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/cookies.rb:338:in `call'
activerecord (3.2.7) lib/active_record/query_cache.rb:64:in `call'
activerecord (3.2.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
activesupport (3.2.7) lib/active_support/callbacks.rb:405:in `_run__821701562__call__524177637__callbacks'
activesupport (3.2.7) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.7) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
activesupport (3.2.7) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.7) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/reloader.rb:65:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
railties (3.2.7) lib/rails/rack/logger.rb:26:in `call_app'
railties (3.2.7) lib/rails/rack/logger.rb:16:in `call'
actionpack (3.2.7) 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 (3.2.7) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.4.1) lib/rack/lock.rb:15:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/static.rb:62:in `call'
railties (3.2.7) lib/rails/engine.rb:479:in `call'
railties (3.2.7) lib/rails/application.rb:220:in `call'
rack (1.4.1) lib/rack/content_length.rb:14:in `call'
railties (3.2.7) lib/rails/rack/log_tailer.rb:17:in `call'
rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
/home/victor/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/home/victor/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/home/victor/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
  • undefined method `gsub' for nil:NilClass at 2012年11月03日

    #16 楼 @huacnlee

  • undefined method `gsub' for nil:NilClass at 2012年11月03日

    #4 楼 @huacnlee log 显示如下：

    Started GET "/" for 127.0.0.1 at 2012-11-03 11:21:47 +0800
Connecting to database specified by database.yml
Processing by PostsController#index as HTML
  Mainboard Load (0.6ms)  SELECT `mainboards`.* FROM `mainboards` 
  Post Load (0.4ms)  SELECT `posts`.* FROM `posts` ORDER BY created_at desc LIMIT 10 OFFSET 0
  Rendered posts/index.html.erb within layouts/application (52.5ms)
Completed 500 Internal Server Error in 224ms

ActionView::Template::Error (undefined method `gsub' for nil:NilClass):
    3: <% @posts.each do |post| %>
    4:     <div class="post-line">
    5:       <div class="title">
    6:       <%= link_to post.title, post %>
    7:       </div>
    8:       <div class="info">
    9:         由<a href="/users/<%= post.user_id %>"><%= User.find(post.user_id).username %></a>发布于<%= post.created_at %> |
  app/views/posts/index.html.erb:6:in `block in _app_views_posts_index_html_erb___578724762_89298580'
  app/views/posts/index.html.erb:3:in `_app_views_posts_index_html_erb___578724762_89298580'
  app/controllers/posts_controller.rb:12:in `index'


  Rendered /home/victor/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.7/lib/action_dispatch/middleware/templates/rescues/_trace.erb (6.0ms)
  Rendered /home/victor/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.7/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (1.0ms)
  Rendered /home/victor/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.7/lib/action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (14.2ms)
  • 以"京东充值漏洞"聊聊测试驱动开发 at 2012年11月02日

    怎么发现的

  • Linux 在线学习及问答网站上线，仿 Codecademy 和 Teamtreehouse 风格，大家拍砖~~ at 2012年10月31日

    能不能提供其他的账户登录呢 比如微博，github 等等

  • 最近开始写博客，发现一个在线的 Markdown editor 还不错,推荐一下，不知道大家用的什么呢？ at 2012年10月28日

    http://daringfireball.net/projects/markdown/dingus

  • [北京] 天际网寻觅初、中、高级 Rubyist [暂停招聘] at 2012年10月26日

    实习生要吗？

  • 两个月前还不知道 ruby 是何物的这两周啃书表示鸭梨有点大.... at 2012年10月26日

    正在学习 Processing，为非理工科设计的编程语言，很方便的语言

  • 擦，姐生气了，要学 ruby！自己改网站 at 2012年10月25日

    先去看姐了 回来再说

  • Metro UI CSS at 2012年10月12日

    为什么颜色不太对啊

  • 有没有熟悉人工智能的同学 at 2012年10月12日

    什么意思，机器人？

  • 正在翻译一本我认为最好的 Linux 入门书籍－The Linux Command Line at 2012年10月06日

    #37 楼 @oa414 那本书在分支 gh-pages 里面，我也停了好久了

  • 向 Steve Jobs 致敬 at 2012年10月05日

    有些人记得却不记得有些人

  • web 敏捷开发第四版的例子……app/views/store/index.html.erb 内容被两次加载 at 2012年10月02日

    这是我跟着这本书学习的时候的代码，你可以对照看看那里不一样 https://github.com/Youngv/depot

  • Ruby on Rails 有什么控件可以实现博客里面编辑文章的功能 at 2012年09月27日

    用在 Rails 项目可以用这个 https://github.com/chloerei/wmd-rails

  • 号召贴：帝都组队学习 ROR at 2012年09月26日

    能提供远程给我们这些新手那就更好了

  • 来说说只有程序员才能看懂的笑话... at 2012年09月19日 
    for(i=99999999999999999999;i>0;i--);
printf("I love you for ever");
  • Agile Web Development with Rails 4th 3.2 版本的有木有童鞋可以分享下 at 2012年09月15日

    #21 楼 @zealinux 115 关闭大众分享了，我传了一份在 Dropbox 上，MOBI and PDF

  • 用 Sinatra 写的一个小论坛~~~ at 2012年09月15日

    很漂亮，但是有些链接没有设置 cursor

  • 按照 Wiki 部署了一个网站却无法注册 at 2012年09月14日

    #1 楼 @ywencn #3 楼 @diudiutang 创建单个 Rails 应用用户（各个 Rails 应用相互隔离，增强安全性）

    sudo adduser \
  --system \
  --shell /bin/bash \
  --gecos 'Rails startup site demo' \
  --group \
  --disabled-password \
  --home /home/startup startup

    是不是每一个应用都需要建立一个用户？

  • 按照 Wiki 部署了一个网站却无法注册 at 2012年09月14日

    #1 楼 @ywencn 多谢 原来只需要chmod 777 development.sqlite3就可以了

  • 新手 2 个问题 at 2012年09月08日

    #2 楼 @Anleb 确实没有 #5 楼 @Shadow 是不是rails g controller不会生出相应的表，而rails g model会生出相应的表？

  • 新手 2 个问题 at 2012年09月08日

    1.我的好像没有reconnect: false这句 2.同问

  • 小白问题，rails 在 windows 上的部署问题 at 2012年09月01日

    新手同问如果网站流量很小直接用 webrick 可以吗

  • 通知功能加入了实时提醒功能 at 2012年08月30日

    @w7938940 试试

  • 如何建立一个所有页面都能访问的变量 @topics at 2012年08月28日

    #1 楼 @lidashuang #2 楼 @uudui 能不能具体点