gistfile1.rb

class SettingsController < ApplicationController
  set_tab :settings
  
  before_filter :authenticate_user!

  def edit
    @user = current_user
  end

  def update
    @user = current_user
    update_method = params[:user][:current_password].present? ? :update_with_password :
      :update_without_password

    if @user.send(update_method, params[:user])
      sign_in(@user, :bypass => true)
      redirect_to root_path, :notice => "Settings updated!"
    else
      render :edit
    end
  end
end