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将我的应用程序升级到rails 3.1.1时获取NameError

[英]Getting a NameError when upgrading my app to rails 3.1.1

 原文  2011-10-19 02:03:35  9   2    ruby-on-rails/ nameerror

问题描述

The name of my app is newsample_app . 我的应用名称是newsample_app。 I am following along the railstutorial screencast for upgrading to rails 3.1. 我正在关注railsstutorial截屏，以升级到rails 3.1。 Here is the error message I am getting when copying files over from my old "sample_app" to "newsample_app" and trying to run rspec: 以下是将文件从旧的“sample_app”复制到“newsample_app”并尝试运行rspec时出现的错误消息：

rspec spec/controllers/pages_controller_spec.rb /Users/topica/rails_projects/newsample_app/config/routes.rb:1:in `': uninitialized constant NewSampleApp (NameError) rspec spec / controllers / pages_controller_spec.rb /Users/topica/rails_projects/newsample_app/config/routes.rb:1:in`':uninitialized constant NewSampleApp（NameError）

After seeing this, I changed my routes.rb file from my original sample_app from "SampleApp::Application.routes.draw do" to this: "NewSampleApp::Application.routes.draw do" but am still getting the error. 看到这个之后，我将来自原始sample_app的routes.rb文件从“SampleApp :: Application.routes.draw do”更改为：“NewSampleApp :: Application.routes.draw do”但仍然出现错误。 Any ideas? 有任何想法吗？

FYI complete error: 仅供参考完整错误： 

Topicas-MacBook-Pro:newsample_app topica$ rspec spec/controllers/pages_controller_spec.rb
/Users/topica/rails_projects/newsample_app/config/routes.rb:1:in `<top (required)>': uninitialized constant NewSampleApp (NameError)
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/application/routes_reloader.rb:29:in `block in load_paths'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/application/routes_reloader.rb:29:in `each'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/application/routes_reloader.rb:29:in `load_paths'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/application/routes_reloader.rb:13:in `reload!'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/application/routes_reloader.rb:7:in `block in initialize'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/activesupport-3.1.1/lib/active_support/file_update_checker.rb:32:in `call'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/activesupport-3.1.1/lib/active_support/file_update_checker.rb:32:in `execute_if_updated'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/application/finisher.rb:63:in `block (2 levels) in <module:Finisher>'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/application/finisher.rb:64:in `call'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/application/finisher.rb:64:in `block in <module:Finisher>'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/initializable.rb:30:in `instance_exec'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/initializable.rb:30:in `run'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/initializable.rb:55:in `block in run_initializers'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/initializable.rb:54:in `each'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/initializable.rb:54:in `run_initializers'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/application.rb:96:in `initialize!'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/railties-3.1.1/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /Users/topica/rails_projects/newsample_app/config/environment.rb:5:in `<top (required)>'
    from /Users/topica/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from /Users/topica/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from /Users/topica/rails_projects/newsample_app/spec/spec_helper.rb:3:in `<top (required)>'
    from /Users/topica/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from /Users/topica/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from /Users/topica/rails_projects/newsample_app/spec/controllers/pages_controller_spec.rb:1:in `<top (required)>'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/rspec-core-2.6.4/lib/rspec/core/configuration.rb:419:in `load'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/rspec-core-2.6.4/lib/rspec/core/configuration.rb:419:in `block in load_spec_files'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/rspec-core-2.6.4/lib/rspec/core/configuration.rb:419:in `map'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/rspec-core-2.6.4/lib/rspec/core/configuration.rb:419:in `load_spec_files'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/rspec-core-2.6.4/lib/rspec/core/command_line.rb:18:in `run'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/rspec-core-2.6.4/lib/rspec/core/runner.rb:80:in `run_in_process'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/rspec-core-2.6.4/lib/rspec/core/runner.rb:69:in `run'
    from /Users/topica/.rvm/gems/ruby-1.9.2-p290@rails3_1tutorial/gems/rspec-core-2.6.4/lib/rspec/core/runner.rb:11:in `block in autorun'

2 个解决方案

解决方案1
 1  2011-10-19 02:36:43

Looks like a case problem. 看起来像一个案例问题。 

> "newsample_app".camelize
 => "NewsampleApp"

Note the lowercase "s". 注意小写的“s”。

解决方案2
 1 已采纳  2011-10-19 02:41:25

您可能希望它与config / application.rb中的匹配相同如果它确实是newsample_app而不是它可能是NewsampleApp而不是NewSampleApp

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