Ruby on rails 4 安装设备后导轨出现错误

我在为用户安装Desive后出现此错误

C:3:in `rescue in execute_if_updated': Rails::Application::RoutesReloader#execut
e_if_updated delegated to updater.execute_if_updated, but updater is nil: #<Rail
s::Application::RoutesReloader:0x3900780 @paths=["C:/ror/wishlistize/config/rout
es.rb"], @route_sets=[#<ActionDispatch::Routing::RouteSet:0x393a140>]> (RuntimeE
rror)
        from C:131071:in `execute_if_updated'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/applic
ation/finisher.rb:69:in `block in <module:Finisher>'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/initia
lizable.rb:30:in `instance_exec'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/initia
lizable.rb:30:in `run'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/initia
lizable.rb:55:in `block in run_initializers'
        from C:/Ruby200/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
        from C:/Ruby200/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each
_strongly_connected_component'
        from C:/Ruby200/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_
component_from'
        from C:/Ruby200/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_c
onnected_component'
        from C:/Ruby200/lib/ruby/2.0.0/tsort.rb:180:in `each'
        from C:/Ruby200/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_
component'
        from C:/Ruby200/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/initia
lizable.rb:54:in `run_initializers'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/applic
ation.rb:215:in `initialize!'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/railti
e/configurable.rb:30:in `method_missing'
        from C:/ror/wishlistize/config/environment.rb:5:in `<top (required)>'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_
support/dependencies.rb:228:in `require'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_
support/dependencies.rb:228:in `block in require'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_
support/dependencies.rb:213:in `load_dependency'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_
support/dependencies.rb:228:in `require'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/applic
ation.rb:189:in `require_environment!'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/comman
ds.rb:45:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

和环境.rb

# Load the Rails application.
require File.expand_path('../application', __FILE__)

# Initialize the Rails application.
Wishlistize::Application.initialize!

我在运行rake db:migrate时得到了这个结果 用户模型：

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :confirmable,
  # :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable
end

class用户

好的，我想明白了。我实际上并没有运行

railsg designe:install

，而是根据我阅读的教程直接运行

railsgdesigne:user

。这似乎是造成问题的原因。我安装了edge版本，它变得清晰起来。

您是否使用Rails4兼容版本的Desive？请看，gem'designe'、'3.0.0'I am你能发布你的designe模型吗？（有点像用户）。我怀疑您有一些剩余的

attr\u accessible

（已被Rails 4中的强参数替换）。这通常是升级现有Rails应用程序的结果。我张贴在这里这是一个新的项目顺便说一句。

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :confirmable,
  # :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable
end