为新用户设计Omniauth“encrypted_pa​​ssword可能不为NULL”

时间:2011-07-10 14:58:07

标签: ruby-on-rails devise omniauth

我正在使用Devise与Omniauth让用户通过Facebook登录我的应用程序。我使用Railscast教程来启动并运行它。

如果用户已经是我的网站的成员通过Facebook进行身份验证工作正常。在使用facebook验证新用户时会出现此问题。当它为我的用户模型创建一个新用户时,我得到“users.encrypted_pa​​ssword可能不是NULL”错误。我无法弄清楚如何从Facebook信息中将密码传递给用户模型。

这就是我所拥有的:

authentations_controller.rb

class AuthenticationsController < ApplicationController
 def index
  @authentications = current_user.authentications if current_user
 end

def create
  omniauth = request.env["omniauth.auth"]
  authentication = Authentication.find_by_provider_and_uid(omniauth['provider'],   omniauth['uid'])
 if authentication
   flash[:notice] = "Signed in successfully."
   sign_in_and_redirect(:user, authentication.user)
 elsif current_user
   current_user.authentications.create!(:provider => omniauth['provider'], :uid => omniauth['uid'])
   flash[:notice] = "Authentication successful."
   redirect_to authentications_url
 else
   user = User.new
   user.apply_omniauth(omniauth)
   if user.save
     flash[:notice] = "Signed in successfully."
     sign_in_and_redirect(:user, user)
   else
     session[:omniauth] = omniauth.except('extra')
     redirect_to new_user_registration_url
   end
  end
end

user.rb

 def apply_omniauth(omniauth)
  self.email = omniauth['user_info']['email'] if email.blank?
  authentications.build(:provider => omniauth['provider'], :uid => omniauth['uid'])
 end


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

任何帮助都会很棒,提前谢谢!

1 个答案:

答案 0 :(得分:15)

添加:密码=&gt;从facebook omniauth创建新用户时,Devise.friendly_token [0,20]。

我相信Devise期望在密码字段中创建一个用户。由于在做facebook oauth时没有密码(至少不在你的应用程序端),你只需要创建一个虚拟密码,如上图所示。

有关详情,请参阅此处: https://github.com/plataformatec/devise/wiki/OmniAuth:-Overview