Ruby on Rails 中的模糊渲染错误答案

【问题标题】：Obcure rendering error in Ruby on RailsRuby on Rails 中的模糊渲染错误
【发布时间】：2012-12-23 15:40:29
【问题描述】：

我正在开发一个用 Ruby 自定义编写的小型 CMS，该网站使用 Mongrel 运行。不幸的是，我对 Ruby 一点也不熟悉。网站的一部分最近停止工作（与任何更新无关，所以我不确定是什么原因）

检查 rails 日志中的“production.log”显示如下：

ActionView::TemplateError（nil:NilClass 的未定义方法“名称”）在 app/views/static/frontpage.rhtml 的第 25 行：22： 4, :order =>'date DESC').each |tabloid|%> 23:24: 'tabloid', :action => 'show', :id => tabloid.id %> 25:

By: [ "user_id = ?", tabloid.user_id]).name %> [ "user_id = ?", tabloid.user_id]).surname %>
26:
27: 250 %> 28:
", :controller => 'tabloid', :action => 'show', :id => tabloid.id %>
app/views/static/frontpage.rhtml:25
app/views/static/frontpage.rhtml:22:in `each'
app/views/static/frontpage.rhtml:22
/usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_view/renderable.rb:39:in
send' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_view/renderable.rb:39:inrender' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_view/template.rb:73:in render_template' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_view/base.rb:256:inrender' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_view/base.rb:367:in _render_with_layout' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_view/base.rb:254:inrender' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_controller/base.rb:1174:in render_for_file' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_controller/base.rb:896:inrender_without_benchmark' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_controller/benchmarking.rb:51:in render' /usr/local/rubygems/gems/gems/activesupport-2.2.2/lib/active_support/core_ext/benchmark.rb:8:inrealtime' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_controller/benchmarking.rb:51:in render' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_controller/base.rb:868:inrender_without_benchmark' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_controller/benchmarking.rb:51:in render' /usr/local/rubygems/gems/gems/activesupport-2.2.2/lib/active_support/core_ext/benchmark.rb:8:inrealtime' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_controller/benchmarking.rb:51:in render' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:122:indispatch' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:132:in dispatch_cgi' /usr/local/rubygems/gems/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:39:indispatch' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel/rails.rb:76:in process' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel/rails.rb:74:in同步' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel/rails.rb:74:in process' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel.rb:159:inprocess_client' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel.rb:158:in each' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel.rb:158:inprocess_client' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel.rb:285:in run' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel.rb:285:ininitialize' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel.rb:285:in new' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:282:inrun' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:281:in each' /usr/local/rubygems/gems/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:281:inrun'

等等。 Mongrel 日志实际上已经有一段时间没有更新了。关于问题是什么或我应该在哪里继续挖掘的任何指示？

【问题讨论】：

标签： ruby-on-rails ruby mongrel

【解决方案1】：

Profile.find(:first, :conditions => [ "user_id = ?", tabloid.user_id]) 查询返回nil 所以他不能在上面执行name

【讨论】：

谢谢，这些ID确实有问题，这让我走上了正轨。