OmniAuth 动作控制器错误

Question

我将 OmniAuth gem 与我的 Rails 应用程序一起使用，以允许用户将他们的 Facebook 帐户添加到应用程序，并且我正在关注 Ryan Bates 的教程，但我继续收到此 Rails 错误。

用于#的未定义局部变量或方法`authentications_url'

这是用于身份验证的控制器：

    class AuthenticationsController < ApplicationController

    def index
      @authentications = current_user.authentications if current_user
    end

    def create
      auth = request.env["omniauth.auth"]
      current_user.authentications.find_or_create_by_provider_and_uid(auth['provider'],auth['uid'])
     flash[:notice] = "Authentication successful."
      redirect_to authentications_url
    end

   def destroy
      @authentication = current_user.authentications.find(params[:id])
      @authentication.destroy
      flash[:notice] = "Successfully destroyed authentication."
      redirect_to authentications_url
   end

结束

Answer 1

您的错误是告诉您您的路线不存在。在命令提示符下运行rake routes，看看是否有authentications 路由

从该剧集的ASCIIcasts 版本中，您的config/routes.rb 文件应类似于以下内容：

ProjectManage::Application.routes.draw do |map|  
  match '/auth/:provider/callback' => 'authentications#create'  
  devise_for :users  
  resources :projects  
  resources :tasks  
  resources :authentications  # <-- This is the one you're missing
  root :to => 'projects#index'  
end