devise_for：在轨道4,5

Question

用户的错误，我有这个问题从一个Rails 3应用4.最近迁移我还没有看到在我升级其他应用此错误。

当启动服务器我得到这个错误。我意识到错误出现，而devise_for :users路线出现在routes.rb上。

任何想法是什么原因造成这种错误，以及如何解决它？

/Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:10:in `rescue in execute_if_updated': Rails::Application::RoutesReloader#execute_if_updated delegated to updater.execute_if_updated, but updater is nil: #<Rails::Application::RoutesReloader:0x007fc453039b10 @paths=["/Users/user/Sites/mysite/config/routes.rb"], @route_sets=[#<ActionDispatch::Routing::RouteSet:0x007fc4531562a0>]> (RuntimeError) 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/application/routes_reloader.rb:6:in `execute_if_updated' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/application/finisher.rb:69:in `block in <module:Finisher>' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `instance_exec' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `run' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/initializable.rb:55:in `block in run_initializers' 
    from /Users/user/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each' 
    from /Users/user/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component' 
    from /Users/user/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from' 
    from /Users/user/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component' 
    from /Users/user/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:180:in `each' 
    from /Users/user/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component' 
    from /Users/user/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/initializable.rb:54:in `run_initializers' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/application.rb:215:in `initialize!' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing' 
    from /Users/user/Sites/mysite/config/environment.rb:8:in `<top (required)>' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
    from /Users/user/Sites/mysite/config.ru:3:in `block in <main>' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize' 
    from /Users/user/Sites/mysite/config.ru:in `new' 
    from /Users/user/Sites/mysite/config.ru:in `<main>' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/rack-1.5.2/lib/rack/builder.rb:49:in `eval' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/rack-1.5.2/lib/rack/builder.rb:49:in `new_from_string' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/rack-1.5.2/lib/rack/builder.rb:40:in `parse_file' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/rack-1.5.2/lib/rack/server.rb:277:in `build_app_and_options_from_config' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/rack-1.5.2/lib/rack/server.rb:199:in `app' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/commands/server.rb:48:in `app' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/rack-1.5.2/lib/rack/server.rb:314:in `wrapped_app' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/commands/server.rb:75:in `start' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/commands.rb:78:in `block in <top (required)>' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/commands.rb:73:in `tap' 
    from /Users/user/.rvm/gems/ruby-2.0.0-p247@mysite/gems/railties-4.0.0/lib/rails/commands.rb:73:in `<top (required)>' 
    from script/rails:6:in `require' 
    from script/rails:6:in `<main>'  

Answer 1

同样的错误在这里报告：https://github.com/rails/rails/issues/10559

对我来说，解决方案是更新到最新的边缘导轨（4.0.10.beta）是解决一个问题是防止以显示真正的错误启动服务器时，委托的问题。

，帮助我调试代码更好，解决每一个人的错误，由于迁移。

Answer 2

这个问题可能是你的问题：https://github.com/rails/rails/issues/10559

建议：

1. 在每个模型中取出attr_accessible
2. 添加protected_attributes宝石