orbit-basic/app/controllers/sessions_controller.rb

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