Removed Signup, Fixed Base controller authentication

app/controllers/api/v1/base_controller.rb

@@ -1,26 +1,30 @@
 module Api
   module V1
     class BaseController < ApplicationController
-   	before_filter :restrict_access
+   	before_filter :verify_server
     respond_to :json
     skip_before_filter :verify_authenticity_token
 
-
-     def current_resource_owner
-      User.find(doorkeeper_token.resource_owner_id) if doorkeeper_token
-     end
-
      private
       def authorize_client
       	verify_client || render_unauthorized
       end
 
+      def verify_server
+        restrict_access || render_server_unauthorized
+      end
+
       def restrict_access
       	authenticate_or_request_with_http_token do |token, options|
 	       ApiKey.pluck(:access_token).include?(token)
 		    end
       end
 
+      def render_server_unauthorized
+        self.headers['WWW-Authenticate'] = 'Token realm="Application"'
+        render json: 'Invalid Authorization Token', status: 401
+      end
+
       def verify_client
       	site_token = request.headers[:HTTP_X_SITETOKEN]
       	site_id = request.headers[:HTTP_X_SITEID]

app/models/user.rb

@@ -4,7 +4,7 @@ class User
   # Include default devise modules. Others available are:
   # :confirmable, :lockable, :timeoutable and :omniauthable
   devise :database_authenticatable,
-         :recoverable, :rememberable, :trackable, :validatable, :registerable
+         :recoverable, :rememberable, :trackable, :validatable
 
   ## Database authenticatable
   field :email,              :type => String, :default => ""