Forms Rails 4欢迎向导，如何更正此代码以使其适用于Rails 4？

尝试构建一个欢迎向导，并尝试将现有的rails代码移植为与rails 4兼容的代码。主要基于之前的伟大答案：

这导致：

Circular dependency detected while autoloading constant WelcomeController

app/controller/welcome\u controller.rb

class Welcome::ApplicationController < ::ApplicationController
  layout "welcome" 
  before_filter :authentice_user!   
end

class Welcome::BasicsControlller < Welcome::ApplicationController

  before_action :authenticate_user!
  before_filter :allowed?

  def new
    @step = Welcome::Basics.new(current_user)
  end

  def create
    @step = Welcome::Basics.new(current_user)
    if @step.save(params[:welcome_basics])
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  def step
    @step ||= Welcome::Basics.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

  namespace :welcome do
    resource :basics, :only => [:new, :create]
  end

class WelcomeBasic

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ... 

end

class Welcome::WelcomeController < ApplicationController
  layout "welcome" 
  before_filter :authenticate_user!   
end

class Welcome::BasicsController < Welcome::WelcomeController

  before_filter :allowed?

  def new
    @step = WelcomeBasic.new(current_user)
  end

  def create
    @step = WelcomeBasic.new(current_user)
    if @step.save(basic_params) #updated to use strong_params
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  #For strong_params
  def basic_params
    params.require(:welcome_basic).permit(:attribute1, :attribute2)
  end


  def step
    @step ||= WelcomeBasic.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

...
  namespace :welcome do
    resources :basics, :only => [:new, :create]
  end
...

/config/routes.rb

class Welcome::ApplicationController < ::ApplicationController
  layout "welcome" 
  before_filter :authentice_user!   
end

class Welcome::BasicsControlller < Welcome::ApplicationController

  before_action :authenticate_user!
  before_filter :allowed?

  def new
    @step = Welcome::Basics.new(current_user)
  end

  def create
    @step = Welcome::Basics.new(current_user)
    if @step.save(params[:welcome_basics])
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  def step
    @step ||= Welcome::Basics.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

  namespace :welcome do
    resource :basics, :only => [:new, :create]
  end

class WelcomeBasic

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ... 

end

class Welcome::WelcomeController < ApplicationController
  layout "welcome" 
  before_filter :authenticate_user!   
end

class Welcome::BasicsController < Welcome::WelcomeController

  before_filter :allowed?

  def new
    @step = WelcomeBasic.new(current_user)
  end

  def create
    @step = WelcomeBasic.new(current_user)
    if @step.save(basic_params) #updated to use strong_params
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  #For strong_params
  def basic_params
    params.require(:welcome_basic).permit(:attribute1, :attribute2)
  end


  def step
    @step ||= WelcomeBasic.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

...
  namespace :welcome do
    resources :basics, :only => [:new, :create]
  end
...

---

我看到有几件事似乎不对劲。Rails 4与Rails 3.2之间最大的问题是伪模型定义

class Welcome::Basics

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ...

end

在您的

welcome\u controller.rb

中，您有

authentice user

，它应该是

authenticate user

在您的

welcome\u basics\u controller.rb中，您在定义中拼错了controller，当前：
welcome:：basiccontroller
应该是
welcome:：basiccontroller

我还建议您将命名和继承更改为更简单一些，更符合Rails约定而不是配置。这就是我的方法：

因为welcome_basics.rb是一个伪模型，所以我将它放在它自己的目录中，以防止任何潜在的ActiveModel自动寻源。我还将名称改为单数，以符合Rails对模型的约定

app/pseudo\u models/welcome\u basic.rb

class Welcome::ApplicationController < ::ApplicationController
  layout "welcome" 
  before_filter :authentice_user!   
end

class Welcome::BasicsControlller < Welcome::ApplicationController

  before_action :authenticate_user!
  before_filter :allowed?

  def new
    @step = Welcome::Basics.new(current_user)
  end

  def create
    @step = Welcome::Basics.new(current_user)
    if @step.save(params[:welcome_basics])
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  def step
    @step ||= Welcome::Basics.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

  namespace :welcome do
    resource :basics, :only => [:new, :create]
  end

class WelcomeBasic

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ... 

end

class Welcome::WelcomeController < ApplicationController
  layout "welcome" 
  before_filter :authenticate_user!   
end

class Welcome::BasicsController < Welcome::WelcomeController

  before_filter :allowed?

  def new
    @step = WelcomeBasic.new(current_user)
  end

  def create
    @step = WelcomeBasic.new(current_user)
    if @step.save(basic_params) #updated to use strong_params
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  #For strong_params
  def basic_params
    params.require(:welcome_basic).permit(:attribute1, :attribute2)
  end


  def step
    @step ||= WelcomeBasic.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

...
  namespace :welcome do
    resources :basics, :only => [:new, :create]
  end
...

现在，我将您的welcome\u控制器放在控制器目录中名为“welcome”的子目录中：

app/controller/welcome/welcome\u controller.rb

class Welcome::ApplicationController < ::ApplicationController
  layout "welcome" 
  before_filter :authentice_user!   
end

class Welcome::BasicsControlller < Welcome::ApplicationController

  before_action :authenticate_user!
  before_filter :allowed?

  def new
    @step = Welcome::Basics.new(current_user)
  end

  def create
    @step = Welcome::Basics.new(current_user)
    if @step.save(params[:welcome_basics])
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  def step
    @step ||= Welcome::Basics.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

  namespace :welcome do
    resource :basics, :only => [:new, :create]
  end

class WelcomeBasic

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ... 

end

class Welcome::WelcomeController < ApplicationController
  layout "welcome" 
  before_filter :authenticate_user!   
end

class Welcome::BasicsController < Welcome::WelcomeController

  before_filter :allowed?

  def new
    @step = WelcomeBasic.new(current_user)
  end

  def create
    @step = WelcomeBasic.new(current_user)
    if @step.save(basic_params) #updated to use strong_params
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  #For strong_params
  def basic_params
    params.require(:welcome_basic).permit(:attribute1, :attribute2)
  end


  def step
    @step ||= WelcomeBasic.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

...
  namespace :welcome do
    resources :basics, :only => [:new, :create]
  end
...

/config/routes.rb

class Welcome::ApplicationController < ::ApplicationController
  layout "welcome" 
  before_filter :authentice_user!   
end

class Welcome::BasicsControlller < Welcome::ApplicationController

  before_action :authenticate_user!
  before_filter :allowed?

  def new
    @step = Welcome::Basics.new(current_user)
  end

  def create
    @step = Welcome::Basics.new(current_user)
    if @step.save(params[:welcome_basics])
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  def step
    @step ||= Welcome::Basics.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

  namespace :welcome do
    resource :basics, :only => [:new, :create]
  end

class WelcomeBasic

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ... 

end

class Welcome::WelcomeController < ApplicationController
  layout "welcome" 
  before_filter :authenticate_user!   
end

class Welcome::BasicsController < Welcome::WelcomeController

  before_filter :allowed?

  def new
    @step = WelcomeBasic.new(current_user)
  end

  def create
    @step = WelcomeBasic.new(current_user)
    if @step.save(basic_params) #updated to use strong_params
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  #For strong_params
  def basic_params
    params.require(:welcome_basic).permit(:attribute1, :attribute2)
  end


  def step
    @step ||= WelcomeBasic.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

...
  namespace :welcome do
    resources :basics, :only => [:new, :create]
  end
...

您需要确保的另一件事是，相应的视图与控制器放置在同一目录结构中，因此您应该具有以下功能：

/app/views/welcome/basics/welcome.html.erb

class Welcome::ApplicationController < ::ApplicationController
  layout "welcome" 
  before_filter :authentice_user!   
end

class Welcome::BasicsControlller < Welcome::ApplicationController

  before_action :authenticate_user!
  before_filter :allowed?

  def new
    @step = Welcome::Basics.new(current_user)
  end

  def create
    @step = Welcome::Basics.new(current_user)
    if @step.save(params[:welcome_basics])
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  def step
    @step ||= Welcome::Basics.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

  namespace :welcome do
    resource :basics, :only => [:new, :create]
  end

class WelcomeBasic

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ... 

end

class Welcome::WelcomeController < ApplicationController
  layout "welcome" 
  before_filter :authenticate_user!   
end

class Welcome::BasicsController < Welcome::WelcomeController

  before_filter :allowed?

  def new
    @step = WelcomeBasic.new(current_user)
  end

  def create
    @step = WelcomeBasic.new(current_user)
    if @step.save(basic_params) #updated to use strong_params
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  #For strong_params
  def basic_params
    params.require(:welcome_basic).permit(:attribute1, :attribute2)
  end


  def step
    @step ||= WelcomeBasic.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

...
  namespace :welcome do
    resources :basics, :only => [:new, :create]
  end
...

还有一个提示，当你说“我试着打电话给
http://books:3000/welcome/basics
“，我想您的意思是您试图发布表单？否则，您应该调用
http://books:3000/welcome/basics/new
以获取基本表单。如果您希望该路线映射到
http://books:3000/welcome/basics
您需要在您的
配置/routes.rb
文件中进行相应的调整。
我看到一些问题似乎没有解决。Rails 4与Rails 3.2之间最大的问题是伪模型定义

class Welcome::Basics

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ...

end

在您的
welcome\u controller.rb
中，您有
authentice user
，它应该是
authenticate user

在您的
welcome\u basics\u controller.rb中，您在定义中拼错了controller，当前：
welcome:：basiccontroller
应该是
welcome:：basiccontroller

我还建议您将命名和继承更改为更简单一些，更符合Rails约定而不是配置。这就是我的方法：

因为welcome_basics.rb是一个伪模型，所以我将它放在它自己的目录中，以防止任何潜在的ActiveModel自动寻源。我还将名称改为单数，以符合Rails对模型的约定

app/pseudo\u models/welcome\u basic.rb

class Welcome::ApplicationController < ::ApplicationController
  layout "welcome" 
  before_filter :authentice_user!   
end

class Welcome::BasicsControlller < Welcome::ApplicationController

  before_action :authenticate_user!
  before_filter :allowed?

  def new
    @step = Welcome::Basics.new(current_user)
  end

  def create
    @step = Welcome::Basics.new(current_user)
    if @step.save(params[:welcome_basics])
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  def step
    @step ||= Welcome::Basics.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

  namespace :welcome do
    resource :basics, :only => [:new, :create]
  end

class WelcomeBasic

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ... 

end

class Welcome::WelcomeController < ApplicationController
  layout "welcome" 
  before_filter :authenticate_user!   
end

class Welcome::BasicsController < Welcome::WelcomeController

  before_filter :allowed?

  def new
    @step = WelcomeBasic.new(current_user)
  end

  def create
    @step = WelcomeBasic.new(current_user)
    if @step.save(basic_params) #updated to use strong_params
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  #For strong_params
  def basic_params
    params.require(:welcome_basic).permit(:attribute1, :attribute2)
  end


  def step
    @step ||= WelcomeBasic.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

...
  namespace :welcome do
    resources :basics, :only => [:new, :create]
  end
...

现在，我将您的welcome\u控制器放在控制器目录中名为“welcome”的子目录中：

app/controller/welcome/welcome\u controller.rb

class Welcome::ApplicationController < ::ApplicationController
  layout "welcome" 
  before_filter :authentice_user!   
end

class Welcome::BasicsControlller < Welcome::ApplicationController

  before_action :authenticate_user!
  before_filter :allowed?

  def new
    @step = Welcome::Basics.new(current_user)
  end

  def create
    @step = Welcome::Basics.new(current_user)
    if @step.save(params[:welcome_basics])
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  def step
    @step ||= Welcome::Basics.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

  namespace :welcome do
    resource :basics, :only => [:new, :create]
  end

class WelcomeBasic

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ... 

end

class Welcome::WelcomeController < ApplicationController
  layout "welcome" 
  before_filter :authenticate_user!   
end

class Welcome::BasicsController < Welcome::WelcomeController

  before_filter :allowed?

  def new
    @step = WelcomeBasic.new(current_user)
  end

  def create
    @step = WelcomeBasic.new(current_user)
    if @step.save(basic_params) #updated to use strong_params
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  #For strong_params
  def basic_params
    params.require(:welcome_basic).permit(:attribute1, :attribute2)
  end


  def step
    @step ||= WelcomeBasic.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

...
  namespace :welcome do
    resources :basics, :only => [:new, :create]
  end
...

/config/routes.rb

class Welcome::ApplicationController < ::ApplicationController
  layout "welcome" 
  before_filter :authentice_user!   
end

class Welcome::BasicsControlller < Welcome::ApplicationController

  before_action :authenticate_user!
  before_filter :allowed?

  def new
    @step = Welcome::Basics.new(current_user)
  end

  def create
    @step = Welcome::Basics.new(current_user)
    if @step.save(params[:welcome_basics])
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  def step
    @step ||= Welcome::Basics.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

  namespace :welcome do
    resource :basics, :only => [:new, :create]
  end

class WelcomeBasic

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ... 

end

class Welcome::WelcomeController < ApplicationController
  layout "welcome" 
  before_filter :authenticate_user!   
end

class Welcome::BasicsController < Welcome::WelcomeController

  before_filter :allowed?

  def new
    @step = WelcomeBasic.new(current_user)
  end

  def create
    @step = WelcomeBasic.new(current_user)
    if @step.save(basic_params) #updated to use strong_params
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  #For strong_params
  def basic_params
    params.require(:welcome_basic).permit(:attribute1, :attribute2)
  end


  def step
    @step ||= WelcomeBasic.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

...
  namespace :welcome do
    resources :basics, :only => [:new, :create]
  end
...

您需要确保的另一件事是，相应的视图与控制器放置在同一目录结构中，因此您应该具有以下功能：

/app/views/welcome/basics/welcome.html.erb

class Welcome::ApplicationController < ::ApplicationController
  layout "welcome" 
  before_filter :authentice_user!   
end

class Welcome::BasicsControlller < Welcome::ApplicationController

  before_action :authenticate_user!
  before_filter :allowed?

  def new
    @step = Welcome::Basics.new(current_user)
  end

  def create
    @step = Welcome::Basics.new(current_user)
    if @step.save(params[:welcome_basics])
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  def step
    @step ||= Welcome::Basics.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

  namespace :welcome do
    resource :basics, :only => [:new, :create]
  end

class WelcomeBasic

  include ActiveModel::Model # Necessary for Rails 4

  include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  ... 

end

class Welcome::WelcomeController < ApplicationController
  layout "welcome" 
  before_filter :authenticate_user!   
end

class Welcome::BasicsController < Welcome::WelcomeController

  before_filter :allowed?

  def new
    @step = WelcomeBasic.new(current_user)
  end

  def create
    @step = WelcomeBasic.new(current_user)
    if @step.save(basic_params) #updated to use strong_params
      redirect_to welcome_some_other_step_path, :notice => "Yay"
    else
      render :new
    end
  end

  private

  #For strong_params
  def basic_params
    params.require(:welcome_basic).permit(:attribute1, :attribute2)
  end


  def step
    @step ||= WelcomeBasic.new(current_user)
  end

  helper_method :step

  def allowed?
    redirect_to previous_step_path unless step.allowed?
  end

end

...
  namespace :welcome do
    resources :basics, :only => [:new, :create]
  end
...

还有一个提示，当你说“我试着打电话给
http://books:3000/welcome/basics
“，我想您的意思是您试图发布表单？否则，您应该调用
http://books:3000/welcome/basics/new
以获取基本表单。如果您希望该路线映射到
http://books:3000/welcome/basics
您需要在
配置/routes.rb
文件中进行相应的调整。
是否有理由拆分这两个控制器而不是只使用一个？您是否尝试实施我的解决方案？您还有什么问题？是否有理由拆分这两个控制器而不是只使用一个？您是否尝试实施我的解决方案？你还有什么问题吗？使用
rails generate controller welcome/basics
，它会为你创建合适的目录。好的，写得很好，谢谢，让我了解了更多正确的方向。如何让欢迎控制器更新配置文件？当然，它仍然路由到我的profiles控制器——当我有@profiles的简单表单时，问题是我使用@profile模型来存储我的所有值，目前这个实现依赖于welcome\u basics模型来保存这些值，这增加了额外的复杂性。如果将这些概要文件属性添加到attr\u accessible（可能1），您可以告诉simple\u form\u您希望它使用哪条路由。2） 假设您的整个设置都是基于使用伪模型（我建议对这个伪模型使用WelcomeBasic命名）一步一步地存储属性，一旦您拥有了所有属性，就可以将它们保存到实际的模型中。尝试以下操作：
simple_form_for（：welcome_basic，url:welcome_basics_path）do | f |
注意：如果添加视图代码，这将有助于更彻底地诊断遇到的问题，我可以适当地更新我的答案。谢谢Paul，我将深入研究这一点，希望能够重构我的旧代码并使其正常工作。再次感谢您内容丰富的来信！使用
rails generate controller welcome/basics
，它将为您创建合适的目录。好的，非常好的书面感谢让我了解了更多正确的方向。如何让欢迎控制器更新配置文件？是s