diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
deleted file mode 100644
index 929c316a..00000000
--- a/app/controllers/sessions_controller.rb
+++ /dev/null
@@ -1,26 +0,0 @@
-class SessionsController < Devise::SessionsController
-  prepend_before_filter :require_no_authentication, :only => [ :new, :create ]
-  include Devise::Controllers::InternalHelpers
-
-  # POST /resource/sign_in
-  def create 
-    # login_password = params[:user][:password]
-    # login_uid = params[:user][:nccu_ldap_uid]
-    login_password = params[:user][:password]
-    login_email = params[:user][:email]
-    result = false
-    resource =   User.first(conditions:{ email: login_email })
-    set_flash_message(:notice, :signed_in) if is_navigational_format?
-    if  resource.nil?
-      logger.error "Can't find user #{login_email}"
-      flash[:notice] = t('devise.failure.invalid')
-      render :action => "new"
-    else
-      logger.info "=== passed"
-      resource_name = resource.class.to_s.downcase
-      sign_in(resource_name, resource)
-      respond_with resource, :location => redirect_location(resource_name, resource)
-    end
-  end
-
-end
diff --git a/app/models/user/user.rb b/app/models/user/user.rb
index 3ae7bf5d..5893dae2 100644
--- a/app/models/user/user.rb
+++ b/app/models/user/user.rb
@@ -9,10 +9,7 @@ class User
   
   field :admin, :type => Boolean, :default => true
   field :active_role
-  field :nccu_ldap_uid
   field :email
-  # field :cache_dept
-  # has_one :cache_dept, :class_name => "I18nVariable", :as => :language_value, :autosave => true, :dependent => :destroy
   field :cache_dept,type: Hash
   field :status_record,type: Hash
 
diff --git a/app/views/devise/sessions/new.html.erb b/app/views/devise/sessions/new.html.erb
index 1ab2e89b..f394700c 100644
--- a/app/views/devise/sessions/new.html.erb
+++ b/app/views/devise/sessions/new.html.erb
@@ -3,11 +3,11 @@
 	<h3><%= t(:login) %></h3>
 </div>
 <div id="container" class="sign-in">
-	<%= form_for :user, :url => user_session_path, :html => {:class => 'user_new form-horizontal'} do |f| %>
+	<%= form_for resource, :as => resource_name, :url => session_path(resource_name), :html => {:class => 'user_new form-horizontal'} do |f| %>
 		<div class="content">
 			 <% flash.each do |key, msg| %>
 		    <%= content_tag :span, msg, :class => [key, "notice label label-warning"] %>
-		  <% end%>
+		  <% end %>
 			<p class="alert hide">You need to sign in or sign up before continuing.</p>
 			<div class="main">
 				<div class="control-group clear">
diff --git a/app/views/layouts/_orbit_bar.html.erb b/app/views/layouts/_orbit_bar.html.erb
index c3decff8..1769d1ca 100644
--- a/app/views/layouts/_orbit_bar.html.erb
+++ b/app/views/layouts/_orbit_bar.html.erb
@@ -90,7 +90,7 @@
 									<li>
 										<div class="input-prepend">
 											<span class="add-on"><i class="icon-user"></i></span>
-											<%= f.text_field :nccu_ldap_uid, :class => 'span2', :placeholder => t('nccu_c.nccu_ldap_uid'), :size => 16 %>
+											<%= f.text_field :email, :class => 'span2', :placeholder => t(:email), :size => 16 %>
 										</div>
 									</li>
 									<li>
diff --git a/config/initializers/devise.rb b/config/initializers/devise.rb
index ea19b137..817f12ea 100644
--- a/config/initializers/devise.rb
+++ b/config/initializers/devise.rb
@@ -21,7 +21,7 @@ Devise.setup do |config|
   # parameters are used only when authenticating and not when retrieving from
   # session. If you need permissions, you should implement that in a before filter.
   # config.authentication_keys = [ :email ]
-  config.authentication_keys = [ :nccu_ldap_uid ]
+  config.authentication_keys = [ :email ]
   
 
   # Tell if authentication through request.params is enabled. True by default.
diff --git a/config/routes.rb b/config/routes.rb
index 88a39f42..0fb8cd24 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,6 +1,6 @@
 Orbit::Application.routes.draw do
 
-  devise_for :users,:controllers => {:sessions => 'sessions'}
+  devise_for :users
   mount Resque::Server, :at => "/admin/resque"
   
   # routes for sinatra app