设计和 OmniAuth：如何保存 Facebook 数据以备后用？

Question

我已经使用 Devise 和 OmniAuth（内置于 Devise）成功实现了 Facebook 登录。现在我需要弄清楚如何将用户的姓名存储在数据库中，以便我可以向其他用户显示他们的姓名，以查看他们在我的应用程序中创建/编辑了记录。

我一定是从某个地方复制了这段代码，它看起来应该可以工作，但它肯定没有将名称保存在数据库中：

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
  def facebook
      @user = User.find_for_facebook_oauth(env["omniauth.auth"], current_user)

      if @user.persisted?
        flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Facebook"
        sign_in_and_redirect @user, :event => :authentication
      else
        session["devise.facebook_data"] = env["omniauth.auth"]
        redirect_to new_user_registration_url
      end
    end
end

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

  # Setup accessible (or protected) attributes for your model
  attr_accessible :email, :password, :password_confirmation, :remember_me

   def self.find_for_facebook_oauth(access_token, signed_in_resource=nil)
    data = access_token['extra']['user_hash']
    if user = User.find_by_email(data['email'])
      if user.first_name != data['first_name']
        user.update_attributes :first_name => data['first_name']
      end
      user
    else # Create an user with a stub password. 
      User.create!(:email => data['email'], 
                   :first_name => data['first_name'],
                   :password => Devise.friendly_token[0,20]) 
    end
  end

  def self.new_with_session(params, session)
    super.tap do |user|
      if data = session['devise.facebook_data'] && session['devise.facebook_data']['extra']['user_hash']
        user.email = data['email']
      end
    end
  end
end

我做错了什么？

Answer 1

Andrew，如 here 所写：方法 attr_accessible 使属性可用于批量分配。

你应该这样写：

attr_accessible :email, :password, :password_confirmation, :remember_me, :first_name