设计生成视图错误答案

【问题标题】：devise generating views error设计生成视图错误
【发布时间】：2012-01-07 11:11:37
【问题描述】：

devise gem 有问题，当我输入 rails generate devise:install 命令时出现错误：

/home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.1/lib/active_support/inflector/methods.rb:124:in `block in constantize': unin
itialized constant View (NameError)
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.1/lib/active_support/inflector/methods.rb:123:in `each'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.1/lib/active_support/inflector/methods.rb:123:in `constantize'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.1/lib/active_support/core_ext/string/inflections.rb:43:in `const
antize'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/devise-1.1.rc1/lib/devise/mapping.rb:87:in `to'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/devise-1.1.rc1/lib/devise/mapping.rb:80:in `modules'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/devise-1.1.rc1/lib/devise/mapping.rb:93:in `strategies'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/devise-1.1.rc1/lib/devise.rb:166:in `register'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/devise-1.1.rc1/lib/devise/rails/routes.rb:92:in `block in devise_for'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/devise-1.1.rc1/lib/devise/rails/routes.rb:91:in `each'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/devise-1.1.rc1/lib/devise/rails/routes.rb:91:in `devise_for'
        from /home/ofca/Praca/inzynierka/config/routes.rb:2:in `block in <top (required)>'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.1.1/lib/action_dispatch/routing/route_set.rb:258:in `instance_exec'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.1.1/lib/action_dispatch/routing/route_set.rb:258:in `eval_block'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.1.1/lib/action_dispatch/routing/route_set.rb:235:in `draw'
        from /home/ofca/Praca/inzynierka/config/routes.rb:1:in `<top (required)>'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application/routes_reloader.rb:29:in `block in load_paths
'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application/routes_reloader.rb:29:in `each'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application/routes_reloader.rb:29:in `load_paths'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application/routes_reloader.rb:13:in `reload!'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application/routes_reloader.rb:7:in `block in initialize'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.1/lib/active_support/file_update_checker.rb:32:in `call'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.1/lib/active_support/file_update_checker.rb:32:in `execute_if_up
dated'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application/finisher.rb:63:in `block (2 levels) in <modul
e:Finisher>'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application/finisher.rb:64:in `call'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application/finisher.rb:64:in `block in <module:Finisher>
'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/initializable.rb:30:in `instance_exec'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/initializable.rb:30:in `run'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/initializable.rb:55:in `block in run_initializers'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/initializable.rb:54:in `each'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/initializable.rb:54:in `run_initializers'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application.rb:96:in `initialize!'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/railtie/configurable.rb:30:in `method_missing'
        from /home/ofca/Praca/inzynierka/config/environment.rb:5:in `<top (required)>'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application.rb:83:in `require'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/application.rb:83:in `require_environment!'
        from /home/ofca/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/commands.rb:22:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'

我在 Linux 上使用 Rails 3.1.1 和 Ruby 1.9.2p290（2011-07-09 修订版 32553）。 db 是 postgres。这是错误日志第一行中提到的行：

constant = constant.const_defined?(name, false) ? constant.const_get(name) : constant.const_missing(name)

哦，我尝试了这个命令的其他组合：rails generate devise:install, rails g devise_install，它给了我同样的效果

【问题讨论】：

标签： ruby-on-rails-3 devise views

【解决方案1】：

解决方案：添加到 gemfile：

gem 'devise', :git => 'git://github.com/plataformatec/devise.git'

【讨论】：

您应该将gem 'devise' 留在您的Gemfile 中，而改为使用bundle update。
我运行了它，但它对我没有帮助：/
抱歉，应该是bundle update devise。如果这仍然不起作用，您可能有另一个取决于设计的宝石。在这种情况下，您应该发布您的 Gemfile 和 Gemfile.lock 的全部内容。

【解决方案2】：

您正在使用一个非常旧的 Devise 版本，甚至不打算在生产中使用（它是一个候选版本！）。请更新您的设计版本。

【讨论】：

谢谢！这解决了问题:) 顺便说一句。 Jose - 我是在 Rupy 带着你的生日蛋糕进入课堂的人 :) 很高兴亲自见到你 [sorry4offtopic;)]