Devise + omniauth twitter +身份验证表

Question

通过Twitter登录按钮进行身份验证时，出现此浏览器错误

The action 'new' could not be found for RegistrationsController

我根据本指南http://www.orhancanceylan.com/rails-twitter-and-facebook-authentications-with-omniauth-and-devise/#comment-1375创建了一个registrations_controller.rb来覆盖某些方法的devise控制器。

抱歉，代码太冗长。 主要部分是twitter方法中的authentications_controller.rb中的方法的else部分。

代码的该部分决定了用户何时没有先前创建的其他第三方登录身份验证以及是否未通过设计登录。 因此，必须在代码的该部分中创建身份验证记录和用户记录。 但是我得到了错误。

有一个身份验证表，以便我可以添加其他omniauth策略。

如果不清楚，或者需要更多信息，请让我知道如何改进该问题。

routes.rb

  devise_for :users, :path => '', 
                     :path_names => { :sign_in => "login", 
                                      :sign_out => "logout", 
                                      :sign_up => "sign-up", 
                                      :account_update => "account-settings" },
                     :controllers => { omniauth_callbacks: "authentications", registrations: "registrations" }

  get "/auth/:provider/callback", to: "authentications#:provider"

authentications_controller.rb

class AuthenticationsController < Devise::OmniauthCallbacksController

  def twitter
    omni = request.env["omniauth.auth"]
    authentication = Authentication.find_by_provider_and_uid(omni['provider'], omni['uid'])

    if authentication 
      # If already registered previously
      flash[:notice] = "Logged in successfully."      
      user = User.find(authentication.user_id)
      sign_in_and_redirect user
    elsif current_user 
      # If signed in via any other strategy, including devise.

      current_user.authentications.create!(:provider => omni['provider'], 
                                           :uid => omni['uid'], 
                                           :token => token = omni['credentials']['token'],
                                           :token_secret => omni['credentials']['secret'])
      flash[:notice] = "Authentication successful."
      sign_in_and_redirect current_user
    else                                     # this is the conditional that gets executed.
      # If brand new to the site.
      user = User.new
      user.apply_omniauth(omni)

      if user.save
        flash[:notice] = "Login successful."
        sign_in_and_redirect User.find(user.id)
      else
        session[:omniauth] = omni.except('extra')
        redirect_to new_user_registration_path
      end
    end

  end

  # Overrides
  def create
    super
    session[:omniauth] = nil unless @user.new_record?
  end

end

authentication.rb

# == Schema Information
#
# Table name: authentications
#
#  id           :integer          not null, primary key
#  user_id      :integer
#  provider     :string(255)
#  uid          :string(255)
#  token        :string(255)
#  token_secret :string(255)
#  profile_page :string(255)
#  created_at   :datetime
#  updated_at   :datetime
#

class Authentication < ActiveRecord::Base
  belongs_to :user
end

#

user.rb

# == Schema Information
#
# Table name: users
#
#  id                     :integer          not null, primary key
#  created_at             :datetime
#  updated_at             :datetime
#  email                  :string(255)      default(""), not null
#  encrypted_password     :string(255)      default(""), not null
#  reset_password_token   :string(255)
#  reset_password_sent_at :datetime
#  remember_created_at    :datetime
#  sign_in_count          :integer          default(0), not null
#  current_sign_in_at     :datetime
#  last_sign_in_at        :datetime
#  current_sign_in_ip     :inet
#  last_sign_in_ip        :inet
#  username               :string(255)
#  admin                  :boolean          default(FALSE)
#  image                  :string(255)
#  points                 :integer          default(0), not null
#  hacks_count            :integer          default(0), not null
#  comment_threads_count  :integer          default(0), not null
#
# Indexes
#
#  index_users_on_email                 (email) UNIQUE
#  index_users_on_reset_password_token  (reset_password_token) UNIQUE

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable, 
         :omniauthable, omniauth_providers: [ :twitter ]

  has_many :hacks
  has_many :comments
  acts_as_voter

  has_many :authentications

  validates :username,
            presence: true,
            :uniqueness => { case_sensitive: false },
            length: { in: 4..20 }

#

  SOCIALS = {
    twitter:  'Twitter',
    facebook: 'Facebook'
  }

#


  def apply_omniauth(omni)
    authentications.build(:provider => omni['provider'],
                          :uid => omni['uid'],
                          :token => token = omni['credentials']['token'],
                          :token_secret => omni['credentials']['secret'])
  end

  # Overrides
  def update_with_password(params, *options)
    if encrypted_password.blank?
      update_attributes(params, *options)
    else
      super
    end
  end

  def password_required?
    super && (authentications.empty? || !password.blank?)
  end

end

Answer 1

我从错误的控制器继承了registrations_controller。

它应该是

class RegistrationsController < Devise::RegistrationsController

不

class RegistrationsController < ApplicationController

提防，伙计们=]