导轨和设计:覆盖 SessionsController [英] Rails & Devise: Override SessionsController

问题描述

我正在尝试在我的主页上设置登录表单.我按照 维基

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

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

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.

我能够为另一个功能覆盖 registrations_controller.rb 但覆盖 sessions_controller.rb 给我带来了很多麻烦.

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

我应该改变什么来做我想做的事?如果登录正确，我仍然希望用户被重定向到 after_sign_in_path.原始控制器在这里

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

到目前为止，我知道我必须在我的 routes.rb

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

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

我还设置了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

我觉得我必须改变 render_with_scope :new 但是...怎么做?使用该版本，我收到错误 undefined method 'users_url' for #<SessionsController:0x5072c88>

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>

好吧，我会等待你的宝贵帮助

Well, I'll wait for your precious help

PS:帖子帮助我处理订阅错误.也许它有助于解决登录错误?

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

==== 编辑 ====

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

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

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

当用户未登录并尝试访问受限"区域时，他被重定向到 root_url 但当登录出错时，我现在有以下错误:

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:我删除了我对 Session Controller 所做的一切，如果成功登录就可以了)

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

=== 编辑 2 ===

按照这个Wiki 重定向完美但我没有任何错误通知.

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

如果有任何改变，我会显示警报/通知闪烁消息

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 %>

=== 最终更新 ===

接受的答案有效.只是不要忘记显示flash alerts

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

推荐答案

您必须覆盖自定义故障设计类.

You have to override your custom failure devise Class.

在 lib/custom_failure.rb 下添加这个自定义故障类

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

在 config/application.rb 下写这个

Write this under config/application.rb

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

_________________编辑_____

_________________Edit __________________

您说当注册出错"时，这意味着控件应该在registrations_controller create 方法中.我想那里一定有问题.尝试添加这些路由.

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

________________编辑 2 ________________

________________Edit 2 ________________

在 views/devise/registrations/new.html.erb 中添加这个

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

<%= devise_error_messages! %>

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