ruby on rails - Omniauth callback processing after authorization -

in rails app, have user , authorization tables handle users , auth data. set both devise , omniauth use twitter sign up, redirects twitter, after returning app, gives error like:

nomethoderror @ /users/auth/twitter/callback  undefined method `authorizations' #<class:0xbdc8100> 

in side, did go wrong , how can fix issue?

here related parts: omniauth_callbacks_controller.rb:

class omniauthcallbackscontroller < devise::omniauthcallbackscontroller     def         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 |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 , :omniauthable     devise :database_authenticatable, :registerable,      :recoverable, :rememberable, :trackable, :validatable, :omniauthable, :omniauth_providers => [:twitter, :facebook]  # setup accessible (or protected) attributes model     attr_accessible :email, :password, :password_confirmation, :remember_me, :name # attr_accessible :title, :body      has_many :authorizations, dependent: :destroy  end 

your issue in line...

user = user.authorizations.from_auth(auth_hash)

you call authorizations on class user, attribute needs called on instance of user class, i.e. specific user.