我似乎無法爲我的導軌應用程序生成遷移，我如何才能通過此錯誤？

A:/Dev/Web/private_app/config/initializers/simple_form.rb:2:in`<top (required)>': uninitialized constant SimpleForm (NameErr 
    or) 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/engine.rb:648:in `block in load_config_initializ 
    er' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.1.8/lib/active_support/notifications.rb:161:in `instrumen 
    t' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/engine.rb:647:in `load_config_initializer' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/engine.rb:612:in `block (2 levels) in <class:Eng 
    ine>' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/engine.rb:611:in `each' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/engine.rb:611:in `block in <class:Engine>' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:30:in `instance_exec' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:30:in `run' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:55:in `block in run_initializer 
    s' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:226:in `block in tsort_each' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:418:in `block (2 levels) in each_strongly_connected_component_from' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:427:in `each_strongly_connected_component_from' 
    from e:/Dev/Rails/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:417:in `block in each_strongly_connected_component_from'

上面是我每次嘗試生成遷移時收到的錯誤。我如何克服這個問題，或者我會在哪裏開始調試？我似乎無法爲我的導軌應用程序生成遷移，我如何才能通過此錯誤？

來源

2015-08-30 rememberThis123

看起來你已經部分安裝了[Simple Form]（https://github.com/plataformatec/simple_form）。如果您在項目中使用簡單表單，請嘗試將'gem'simple_form''添加到'Gemfile'中，然後運行'bundle install'。如果您不使用簡單表單，請嘗試從您的Rails項目中刪除'config/initializers/simple_form.rb'文件。 –

嗨菲爾，我刪除了，然後添加簡單的形式到應用程序，並解決了問題。謝謝。多謝。 – rememberThis123

這應該是一個答案，而不是評論。 –

看起來您已經部分安裝了Simple Form。

如果您在項目中使用簡單表格，請嘗試將gem 'simple_form'添加到您的Gemfile中，然後運行bundle install。如果您未使用簡單表單，請嘗試從您的Rails項目中刪除config/initializers/simple_form.rb文件。

來源

2015-08-30 23:27:10

我似乎無法爲我的導軌應用程序生成遷移，我如何才能通過此錯誤？

回答

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