轨道与设计：覆盖会话控制器 [英] Rails & Devise: Override SessionsController

问题描述

我想在主页上设置一个登录表单。我设法通过遵循维基

除非登录信息不正确，否则 /devise/session/new.html .erb 被呈现。
我不想要。我希望我的用户被重定向到 root_url WITH 闪存消息中的错误。

我可以覆盖 registrations_controller.rb 为另一个功能，但覆盖 sessions_controller.rb 给了我很多麻烦。

我想改变做什么我想做什么？如果登录权限正确，我仍然希望将用户重定向到 after_sign_in_path 。
原始控制器是 here

到目前为止，我知道我必须在我的 routes.rb

devise_for：users，：controllers => {：registrations => 注册，：sessions => 会话}

我还设置了 controller / sessions_controller.rb / p>

  class SessionsController< Devise :: SessionsController 
 
＃GET / resource / sign_in 
 def new 
 resource = build_resource 
 clean_up_passwords（resource）
 respond_with_navigational（resource，stub_options ））{render_with_scope：new} 
 end 
 
 end 
  

我有这样的感觉，我必须更改 render_with_scope：new 但...如何？
有了这个版本，我得到错误 undefined方法'users_url'for＃< SessionsController：0x5072c88>

嗯，我会等待你的宝贵帮助

PS：帖子帮助我很多处理订阅错误。也许这将有助于登录错误？

====编辑====

按照第一个回答建议，我还添加了 initializers / devise.rb ：

  config.warden do | manager | 
 manager.failure_app = CustomFailure 
 end 
  

当用户未登录，尝试访问受限制区域，他被重定向到 root_url ，但是当登录错误时，我现在有以下错误：

  Devise :: SessionsController 
找不到操作'devise / sessions＃new'？ 

（PS：我删除了会话控制器所做的一切，如果成功则删除了登录）

===编辑2 ===

以下 Wiki 重定向工作完美但是我没有任何错误通知。

我正在显示警告/通知Flash消息，如果这更改任何

 <％flash.each do | name，msg | ％GT; 
<％如果msg.class == Array％> 
<％msg.each do | message | ％GT; 
<％= content_tag：p，message，：id => flash _＃{name}％> 
<％end％> 
<％else％> 
<％= content_tag：p，msg，：id => flash _＃{name}％> 
<％end％> 
<％end％> 
  

=== FINAL UPDATE ===

接受的答案有效。只要不要忘记显示 flash alert

解决方案

你必须覆盖您的自定义失败设计类。

在lib / custom_failure.rb下添加此自定义失败类

  CustomFailure类Devise :: FailureApp 
 def response 
 if http_auth？ 
 http_auth 
 elsif warden_options [：回忆] 
召回
 else 
重定向
结束
结束
 
 def重定向
 store_location！ 
 flash [：alert] = i18n_message，除非flash [：notice] 
 redirect_to/
 end 
 
 def recall 
 env [PATH_INFO] = attempts_path 
 flash.now [：alert] = i18n_message（：invalid）
 self.response = recall_controller.action（warden_options [：recall]）。call（env）
 end 
 
 protected 
 
 def i18n_message（default = nil）
 message = warden.message || warden_options [：message] ||默认|| ：未认证的
 
如果message.is_a？（符号）
 I18n.t（：＃{scope}。＃{message}，：resource_name =>范围，
 ：scope =>devise.failure，，default => [message，message.to_s]）
 else 
 message.to_s 
 end 
 end 
 
 def warden_options 
 env ['warden.options'] 
 end 
 
 def warden 
 env ['warden'] 
 end 
 
 def recall_controller 
＃{params [：controller] .camelize}控制器.constantize 
 end 
 
 
 def attempts_path 
 warden_options [：attempts_path] 
 end 
 
 def store_location！ 
 session [：＃{scope} _return_to] = attempts_path if request.get？ &安培;&安培; ！http_auth？ 
 end 
 
 def attempts_path 
 warden_options [：attempts_path] 
 end 
 
 def http_auth？ 
！Devise.navigational_formats.include？（request_format）|| （request.xhr？&  Devise.http_authenticatable_on_xhr）
 end 
 end 
  

在config / application.rb下写下这个

  config.autoload_paths + =％W（＃{config.root} / lib ）
  

_________________编辑__________________

注册错误，这意味着控件应该在注册控制器创建方法中。我猜，那里的东西一定是错的。尝试添加这些路线。

  devise_for：users 
 
 devise_scope：user do 
 root ：to => devise / sessions＃new
 getsign_in，：to => devise / sessions＃new
 getsign_out，：to => devise / sessions＃destroy
 getsign_up，：to => 设计/注册＃新
结束
  

________________编辑2 ________________

在视图/ devise / registrations / new.html.erb中添加此内容

 <％ = devise_error_messages！ ％GT; 
  

I'm trying to set up a sign in form on my home page. I managed to do it by following the Wiki

Except, if the login infos are incorrect, the /devise/session/new.html.erb is rendered. I don't want that. I want my user to be redirected to the root_url WITH the errors in a flash message.

I was able to override registrations_controller.rb for another feature but override sessions_controller.rb gives me a lot of trouble.

What am I suppose to change to do what I want ? I still want the user to be redirected to after_sign_in_path if the sign in went right. The original controller is here

So far, I know I have to do that in my routes.rb

devise_for :users, :controllers => { :registrations => "registrations", :sessions => "sessions" }

And I also set up controller/sessions_controller.rb

class SessionsController < Devise::SessionsController

  # GET /resource/sign_in
  def new
    resource = build_resource
    clean_up_passwords(resource)
    respond_with_navigational(resource, stub_options(resource)){ render_with_scope :new }
  end

end

I have the feeling that I have to change the render_with_scope :new but ...how? With that version, I get the error undefined method 'users_url' for #<SessionsController:0x5072c88>

Well, I'll wait for your precious help

PS: That post helped me a lot for handling errors on subscription. Maybe it'll help for sign in errors?

==== EDIT ====

Following the 1rst answer advice, I also added to initializers/devise.rb:

config.warden do |manager|
  manager.failure_app = CustomFailure
 end

When the user is not logged and tries to access a "restricted" area, he gets redirected to root_url but when the sign in goes wrong, I now have the following error :

The action 'devise/sessions#new' could not be found for Devise::SessionsController

(PS: I deleted everything I did with Session Controller and the log in works if successful)

=== EDIT 2 ===

Following this Wiki the redirection works perfectly BUT I don't have any error notification.

And I'm displaying the alert/notice flash message with that if that changes anything

<% flash.each do |name, msg| %>          
  <% if msg.class == Array %>
    <% msg.each do |message| %>
    <%= content_tag :p, message, :id => "flash_#{name}" %>
  <% end %>
  <% else %>          
    <%= content_tag :p, msg, :id => "flash_#{name}" %>          
  <% end %>
<% end %>

=== FINAL UPDATE ===

The accepted answer works. Just don't forget to display flash alerts

解决方案

You have to override your custom failure devise Class.

Add this custom failure class under lib/custom_failure.rb

class CustomFailure < Devise::FailureApp
  def respond
    if http_auth?
      http_auth
    elsif warden_options[:recall]
        recall
    else
      redirect
    end
  end

  def redirect
      store_location!
      flash[:alert] = i18n_message unless flash[:notice]
      redirect_to "/"
  end

  def recall
    env["PATH_INFO"] = attempted_path
    flash.now[:alert] = i18n_message(:invalid)
    self.response = recall_controller.action(warden_options[:recall]).call(env)
  end

  protected

  def i18n_message(default = nil)
    message = warden.message || warden_options[:message] || default || :unauthenticated

    if message.is_a?(Symbol)
      I18n.t(:"#{scope}.#{message}", :resource_name => scope,
             :scope => "devise.failure", :default => [message, message.to_s])
    else
      message.to_s
    end
  end

  def warden_options
    env['warden.options']
  end

  def warden
    env['warden']
  end

  def recall_controller
    "#{params[:controller].camelize}Controller".constantize
  end


  def attempted_path
    warden_options[:attempted_path]
  end

  def store_location!
    session[:"#{scope}_return_to"] = attempted_path if request.get? && !http_auth?
  end

  def attempted_path
    warden_options[:attempted_path]
  end

  def http_auth?
    !Devise.navigational_formats.include?(request_format) || (request.xhr? && Devise.http_authenticatable_on_xhr)
  end
end

Write this under config/application.rb

config.autoload_paths += %W(#{config.root}/lib)

_________________Edit __________________

You said when the 'sign up goes wrong', this means the control should be in registrations_controller create method. Something must be wrong there, I guess. Try to add these routes.

devise_for :users

  devise_scope :user do
    root :to => "devise/sessions#new"
    get "sign_in", :to => "devise/sessions#new"
    get "sign_out", :to => "devise/sessions#destroy"
    get "sign_up", :to => "devise/registrations#new"
  end

________________Edit 2 ________________

Add this in views/devise/registrations/new.html.erb

<%= devise_error_messages! %>

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