设计和rvm有问题

时间：2014-08-13 02:27:29

标签： ruby-on-rails devise rvm

我正在尝试运行：

rails generate devise User

我收到以下错误：

/home/zach/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `const_get': uninitialized constant User (NameError)
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `block in constantize'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `each'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `inject'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `constantize'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise.rb:297:in `get'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:77:in `to'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:72:in `modules'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:89:in `routes'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:156:in `default_used_route'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/mapping.rb:66:in `initialize'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise.rb:331:in `new'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise.rb:331:in `add_mapping'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/rails/routes.rb:221:in `block in devise_for'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/rails/routes.rb:220:in `each'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/devise-3.2.4/lib/devise/rails/routes.rb:220:in `devise_for'
    from /home/zach/HandCoOp/project/HandCo-op/config/routes.rb:2:in `block in <top (required)>'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `instance_exec'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `eval_block'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:315:in `draw'
    from /home/zach/HandCoOp/project/HandCo-op/config/routes.rb:1:in `<top (required)>'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `each'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `load_paths'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:16:in `reload!'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:26:in `block in updater'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `call'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `execute'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:27:in `updater'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application/finisher.rb:71:in `block in <module:Finisher>'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `instance_exec'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `run'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/initializable.rb:55:in `block in run_initializers'
    from /home/zach/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:226:in `block in tsort_each'
    from /home/zach/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component'
    from /home/zach/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:427:in `each_strongly_connected_component_from'
    from /home/zach/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:347:in `block in each_strongly_connected_component'
    from /home/zach/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:345:in `each'
    from /home/zach/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:345:in `call'
    from /home/zach/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:345:in `each_strongly_connected_component'
    from /home/zach/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:224:in `tsort_each'
    from /home/zach/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb:205:in `tsort_each'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/initializable.rb:54:in `run_initializers'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application.rb:300:in `initialize!'
    from /home/zach/HandCoOp/project/HandCo-op/config/environment.rb:5:in `<top (required)>'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/application.rb:276:in `require_environment!'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:147:in `require_application_and_environment!'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:133:in `generate_or_destroy'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:51:in `generate'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
    from /home/zach/.rvm/gems/ruby-2.1.2/gems/railties-4.1.4/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

我不太确定这里到底出了什么问题，我会继续研究这个问题。谢谢任何知道我的问题的人。我在这里遵循指南：https://github.com/plataformatec/devise但我肯定有问题。

2 个答案:

答案 0 :(得分：0)

不幸的是，我没有足够的业力来评论，所以我会尽我所能在这里提供解决方案。

在尝试生成设计模型之前，您是否确保运行'rails generate devise：install'？另外，在尝试安装Devise或生成模型之前，请确保运行“bundle install”。

答案 1 :(得分：0)

希望你按照以下步骤操作： -

  1. 将gem 'devise'添加到gemfile
  2. Run the bundle命令安装它。

  3. 安装Devise并将其添加到Gemfile后，需要运行生成器：

                  rails generate devise:install

    4. 发生器将安装一个初始化器，描述所有Devise的配置选项，你必须看看它。
     4.完成后，您就可以使用生成器将Devise添加到任何模型中：

    rails generate devise MODEL
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