7

Ruby on Railsを使用して、すべてのユーザーが独自のアカウントを持っていることを認証したいと思います。しかし今、私はこのエラーを受け取ります：

undefined method user_signed_in? for #<ProjectsController:0x007faead1853e0>

誰かが私を助けてもらえますか？

コードは次のとおりです。

完全なトレース：

app/controllers/projects_controller.rb:69:in `require_login'
activesupport (3.2.3) lib/active_support/callbacks.rb:418:in `_run__2505248868868045404__process_action__114470166732456289__callbacks'
activesupport (3.2.3) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.3) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
activesupport (3.2.3) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.3) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (3.2.3) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (3.2.3) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
activesupport (3.2.3) lib/active_support/notifications.rb:123:in `block in instrument'
activesupport (3.2.3) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (3.2.3) lib/active_support/notifications.rb:123:in `instrument'
actionpack (3.2.3) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
actionpack (3.2.3) lib/action_controller/metal/params_wrapper.rb:205:in `process_action'
activerecord (3.2.3) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (3.2.3) lib/abstract_controller/base.rb:121:in `process'
actionpack (3.2.3) lib/abstract_controller/rendering.rb:45:in `process'
actionpack (3.2.3) lib/action_controller/metal.rb:203:in `dispatch'
actionpack (3.2.3) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
actionpack (3.2.3) lib/action_controller/metal.rb:246:in `block in action'
actionpack (3.2.3) lib/action_dispatch/routing/route_set.rb:73:in `call'
actionpack (3.2.3) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
actionpack (3.2.3) lib/action_dispatch/routing/route_set.rb:36:in `call'
journey (1.0.3) lib/journey/router.rb:68:in `block in call'
journey (1.0.3) lib/journey/router.rb:56:in `each'
journey (1.0.3) lib/journey/router.rb:56:in `call'
actionpack (3.2.3) lib/action_dispatch/routing/route_set.rb:600:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
rack (1.4.1) lib/rack/etag.rb:23:in `call'
rack (1.4.1) lib/rack/conditionalget.rb:25:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/head.rb:14:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/flash.rb:242:in `call'
rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context'
rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/cookies.rb:338:in `call'
activerecord (3.2.3) lib/active_record/query_cache.rb:64:in `call'
activerecord (3.2.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:467:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
activesupport (3.2.3) lib/active_support/callbacks.rb:405:in `_run__4031929640367205598__call__2058268190974805736__callbacks'
activesupport (3.2.3) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.3) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
activesupport (3.2.3) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.3) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/reloader.rb:65:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
railties (3.2.3) lib/rails/rack/logger.rb:26:in `call_app'
railties (3.2.3) lib/rails/rack/logger.rb:16:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/request_id.rb:22:in `call'
rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
rack (1.4.1) lib/rack/runtime.rb:17:in `call'
activesupport (3.2.3) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.4.1) lib/rack/lock.rb:15:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/static.rb:62:in `call'
railties (3.2.3) lib/rails/engine.rb:479:in `call'
railties (3.2.3) lib/rails/application.rb:220:in `call'
rack (1.4.1) lib/rack/content_length.rb:14:in `call'
railties (3.2.3) lib/rails/rack/log_tailer.rb:14:in `call'
rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
/Users/sinaoberle/.rbenv/versions/1.9.3-p0/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/Users/sinaoberle/.rbenv/versions/1.9.3-p0/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/Users/sinaoberle/.rbenv/versions/1.9.3-p0/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'

projects_controller.rb

class ProjectsController < ApplicationController
  before_filter :require_login
  # GET /projects
  # GET /projects.json
  def index
    @projects = current_user.projects

  end

  # GET /projects/1
  # GET /projects/1.json
  def show
    @projects = current_user.projects.find(params[:id])

  end

  # GET /projects/new
  # GET /projects/new.json
  def new
    @projects = current_user.projects.build

  end

  # GET /projects/1/edit
   def show
    @projects = current_user.projects.find(params[:id])

  end

  # POST /projects
  # POST /projects.json
  def create
    @projects = current_user.projects.build(params[:mytime])
      if @projects.save
         redirect_to projects_path,
            notice: 'Created successfully!'
      else
        render 'new'
      end
     end 

  # PUT /projects/1
  # PUT /projects/1.json
  def update
    @projects = current_user.projects.find(params[:id])
      if @projects.update_attributes(params[:mytime])
        redirect_to projects_path,
            notice: 'Changed successfully!'
      else
        render 'edit'

   end
 end

  # DELETE /projects/1
  # DELETE /projects/1.json
  def destroy
    @projects = current_user.projects.find(params[:id])
    @projects.destroy
    redirect_to projects_url,
        notice: 'Deleted successfully!'

  end
end 

private

def require_login
  unless user_signed_in?
    redirect_to login_path,
    alert: "Please, Sign In first!"
end 
end

application.html.erb

<!DOCTYPE html>
<html>
<head>
  <title>Test</title>
  <%= stylesheet_link_tag    "application", :media => "all" %>
  <%= javascript_include_tag "application" %>
  <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>


  <%= csrf_meta_tags %>
</head>
<body>
<div id="container">

    <div id="content">
        <% if flash[:notice] %>
        <p id="notice">
            <%= flash[:notice] %>
        </p>
        <% end %>

        <% if flash[:alert] %>
        <p id= "alert">
            <%= flash[:alert] %> 
        </p>
        <% end %>
    </div>
    <div id="footer">
    <%= link_to "Sign In", new_user_path %> |
        <% if user_signed_in? %>
        <%= link_to "Logout", logout_path, method: :delete %> |
        <%= link_to "Test", projects_path %>
        <% else %>
        <%= link_to "Login", login_path %>
        <% end %> 
        <%= yield %>
    </div>
</div>
</body>
</html>

ルート.rb

Projects :: Application.routes.draw do

  get "pages/home"

  resources :projects
  resources :users, :only => [:new, :create]
  resources :sessions, :only => [:create]

  get "login" => "sessions#new", as: "login"
  post "sessions" => "sessions#create", as: "sessions"
  delete "logout" => "sessions#destroy", as: "logout"

  root to: 'pages#home'
4

3 に答える 3

13

認証にdeviseを使用していますか？私自身は使用していませんが、デバイスのコードとドキュメントbefore_filter :authenticate_user!を見ると、のようなヘルパーを使用するコントローラー（または親コントローラークラス）で実行する必要があるように見えますuser_signed_in?。

before_actionRails 5.1以降、代わりに使用する必要があることに注意してください。

于 2012-05-23T09:42:09.823 に答える
1

どのようにしてデバイスモデルを生成しましたか？

私の場合、別の方法で生成しました。このように生成した場合：

rails g devise User/Person

次に、コントローラーでこれを使用して、ページを表示する前にユーザーがsigned_inであることを確認できるはずです。

ユーザーではなく人を使用していることに注意してください

before_action :authenticate_person!

サインインしているかどうかを確認するには、次のようにします。

    <% if person_signed_in? %>
        <p>You are signed in</p>
    <% else %>
        <p>Aww you are not signed in!</p>
    <% end %>

秘訣は、これらのヘルパーが、最初にDeviseモデルを生成した方法に基づいて自動生成されることを理解することです。

これは、Deviseのgithubに文書化されています。

たとえば、DeviseモデルがUserではなくMemberと呼ばれる場合、使用可能なヘルパーは次のとおりです。

before_action :authenticate_member!

member_signed_in?

current_member

member_session

https://github.com/plataformatec/devise

ノート：

:authenticate_user_person私が生成したものが機能しないように、なぜそれが最後の部分だけを選んだのかわかりません。よくわからない場合は、通常、エラーページに次のように表示されます。

「＃your_devise_model_name_here＃のことですか？」

ここに画像の説明を入力してください

于 2018-01-16T16:44:31.467 に答える
0

必ずauthenticationgemdeviseをインストールしてください。メソッド'user_signed_in？'はrails3に組み込まれていません。

Devise：NoMethod Error＆user_signed_inを参照してください

于 2012-05-23T09:46:40.813 に答える