在我的 Rails 应用程序中，我有处理用户和身份验证数据的表user。authorization我将 Devise 和 Omniauth 都设置为使用 Twitter 进行注册，它会重定向到 Twitter，但是在返回我的应用程序后，它会给出如下错误：
NoMethodError at /users/auth/twitter/callback
undefined method `authorizations' for #<Class:0xbdc8100>
我在哪方面做错了，我该如何解决这个问题？
以下是相关部分omniauth_callbacks_controller.rb：
class OmniauthCallbacksController < Devise::OmniauthCallbacksController
def all
user = User.authorizations.from_auth(auth_hash)
if user.persisted?
flash.notice = "Signed in!"
sign_in_and_redirect user
else
session["devise.user_attributes"] = user.attributes
redirect_to new_user_registration_url
end
end
alias_method :twitter, :all
protected
def auth_hash
request.env['omniauth.auth']
end
end
authorization.rb：
class Authorization < ActiveRecord::Base
attr_accessible :uid, :provider
belongs_to :user
def self.from_auth(auth)
where(auth.slice(:provider, :uid)).first_or_create do |user|
user.provider = auth.provider
user.uid = auth.uid
end
end
user.rb：
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :token_authenticatable, :confirmable,
# :lockable, :timeoutable and :omniauthable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable, :omniauthable, :omniauth_providers => [:twitter, :facebook]
# Setup accessible (or protected) attributes for your model
attr_accessible :email, :password, :password_confirmation, :remember_me, :name
# attr_accessible :title, :body
has_many :authorizations, dependent: :destroy
end