edit.html.erb

<%= semantic_form_for @user do |f| %>
  <%= f.inputs :name, :password, :sex, :birthday, :about, :skype, :facebook, :twitter, :livejournal %>
  <%= f.actions :submit, :cancel %>
<% end %>

user.rb

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :encryptable, :confirmable, :lockable, :timeoutable and :omniauthable
  include Likeable::UserMethods

  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable, :omniauthable

  has_many :advices, :dependent => :destroy
  has_many :answers, :dependent => :destroy
  has_many :comments, :dependent => :destroy
  has_many :questions, :dependent => :destroy
  has_many :trips, :dependent => :destroy
  has_many :authentications, :dependent => :destroy
  belongs_to :account
  
  # Setup accessible (or protected) attributes for your model
  attr_accessible :email, :password, :password_confirmation, :remember_me, :admin,
      :name, :birthday, :sex, :about, :skype, :facebook, :twitter, :livejournal
  
  def apply_omniauth(omniauth)
    authentications.build(:provider => omniauth['provider'], :uid => omniauth['uid'])
  end

  def password_required?
    (authentications.empty? || !password.blank?) && super
  end
  
end

user_controller.rb

class UsersController < ApplicationController

  def update
    @user = current_user

    respond_to do |format|
      if @user.update_attributes(params[:user])
        format.html { redirect_to(@user) }
      else
        format.html { render :action => "edit" }
      end
    end
  end

  def show
    @user = current_user
  end

  def edit
    @user = current_user
  end

end