Model

edit.html.erb

<div id="content-outer">
<!-- start content -->
<div id="content">


<div id="page-heading"><h1>Editando Usuário <%= @user.id %></h1></div>
<table border="0" width="100%" cellpadding="0" cellspacing="0" id="content-table">
<tr>
	<th rowspan="3" class="sized"><%= image_tag("/images/shared/side_shadowleft.jpg", :width => '20', :height => '300') %></th>
	<th class="topleft"></th>
	<td id="tbl-border-top">&nbsp;</td>
	<th class="topright"></th>

	<th rowspan="3" class="sized"><%= image_tag("/images/shared/side_shadowright.jpg", :width => '20', :height => '300') %></th>
</tr>
<tr>
	<td id="tbl-border-left"></td>
	<td>
	<!--  start content-table-inner -->
	<div id="content-table-inner">
	
	<table border="0" width="100%" cellpadding="0" cellspacing="0">
	<tr valign="top">
	<td>

		<!-- start id-form -->

		<%= form_for @user, :url => admin_user_path(@user) do |f|  %>
  		<% if @user.errors.any? %>
			<div id="table-content">
			  <div id="message-red">
				<table border="0" width="100%" cellpadding="0" cellspacing="0">
					<tr>
						<td class="red-left"><%= pluralize(@user.errors.count, "erros") %> proíbem este usuário de ser atualizado:</a></td>
						<td class="red-right"><a class="close-red"><%= image_tag("/images/table/icon_close_red.gif") %></a></td>
					</tr>
				</table>
			</div>
		<% @user.errors.full_messages.each do |msg| %>
			<div id="message-yellow">
				<table border="0" width="100%" cellpadding="0" cellspacing="0">
				<tr>
					<td class="yellow-left"><%= msg %> <a href="">Go to Inbox.</a></td>
					<td class="yellow-right"><a class="close-yellow"><%= image_tag("/images/table/icon_close_yellow.gif") %></a></td>
				</tr>
				</table>
			</div>
		<% end %>
		</div>
	  <% end %>
	
	<table border="0" cellpadding="0" cellspacing="0"  id="id-form">
		
	<tr>
	    <th valign="top">Nome</th>
		<td><%= f.text_field :name, :class => "inp-form" %></td>
		<td>
			<div class="bubble-left"></div>
			<div class="bubble-inner">Altera o seu nome!</div>
			<div class="bubble-right"></div>
		</td>
	 </tr>
	 
	<tr>
	    <th valign="top">Celular:</th>
		<td><%= f.text_field :cell, :class => "inp-form" %></td>
		<td>
			<div class="bubble-left"></div>
			<div class="bubble-inner">Altera o seu número de celular!</div>
			<div class="bubble-right"></div>
		</td>
	 </tr>
	
	<tr>
	    <th valign="top">Telefone</th>
		<td><%= f.text_field :phone, :class => "inp-form" %></td>
		<td>
			<div class="bubble-left"></div>
			<div class="bubble-inner">Altera o seu número de telefone fixo!</div>
			<div class="bubble-right"></div>
		</td>
	 </tr>
	
	<tr>
	    <th valign="top">Email:</th>
		<td><%= f.text_field :email, :class => "inp-form" %></td>
		<td>
			<div class="bubble-left"></div>
			<div class="bubble-inner">Altera o seu email de acesso ao site!</div>
			<div class="bubble-right"></div>
		</td>
	 </tr>
	
	<tr>
	    <th valign="top">Descrição</th>
		<td><%= f.text_area :description, :class => "form-textarea" %></td>
		<td>
			<div class="bubble-left"></div>
			<div class="bubble-inner">Altera sua descrição (deixe sempre atualizada)</div>
			<div class="bubble-right"></div>
		</td>
	 </tr>
	
	<% if current_user.admin %>
		<tr>
	    	<th valign="top">Ativado?</th>
			<td><%= f.check_box :actived, :class => "inp-form" %></td>
			<td>
				<div class="bubble-left"></div>
				<div class="bubble-inner">Ativar este usuário!</div>
				<div class="bubble-right"></div>
			</td>
	 	</tr>
		
		<tr>
	    	<th valign="top">Administrador?</th>
			<td><%= f.check_box :admin, :class => "inp-form" %></td>
			<td>
				<div class="bubble-left"></div>
				<div class="bubble-inner">Tornar este usuário administrador do site!</div>
				<div class="bubble-right"></div>
			</td>
	 	</tr>
	
		<tr>
	    	<th valign="top">Parceiro?</th>
			<td><%= f.check_box :partner, :class => "inp-form" %></td>
			<td>
				<div class="bubble-left"></div>
				<div class="bubble-inner">Torna este usuário um parceiro do site!</div>
				<div class="bubble-right"></div>
			</td>
	 	</tr>
	<% end %>

	<%= f.hidden_field :user_id, :value => current_user.id %>
	<%= f.hidden_field :password, :value => @user.encrypted_password %>
	<%= f.hidden_field :password_confirmation, :value => @user.encrypted_password %>
		
	<tr>
		<th>&nbsp;</th>
		<td valign="top">
		  <%= f.submit "Enviar", :class => "form-submit" %>
		  <input type="reset" value="" class="form-reset"  />
	    </td>
		<td>
			<div class="bubble-left"></div>
			<div class="bubble-inner">Clique "Submit" para atualizar os dados ou "Reset" para limpar os dados.</div>
			<div class="bubble-right"></div>
		</td>
	</tr>
	</table>

	<% end %>
	
	  <!-- end id-form  -->

	</td>
	</tr>
	<tr>
	<td><%= image_tag("/images/shared/blank.gif", :width => '695', :height => '1') %></td>
	<td></td>
	</tr>
	</table>

	<div class="clear"></div>


	</div>
	<!--  end content-table-inner  -->
	</td>
	<td id="tbl-border-right"></td>

	</tr>
	<tr>
	<th class="sized bottomleft"></th>
	<td id="tbl-border-bottom">&nbsp;</td>
	<th class="sized bottomright"></th>
	</tr>
	</table>
	<div class="clear">&nbsp;</div>
	</div>
	<!--  end content -->
	<div class="clear">&nbsp;</div>
	</div>


	<%= link_to 'Mostrar', admin_imovel_path(@imovel) %> |
	<%= link_to 'Voltar', admin_imoveis_path %>

user.rb

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :encryptable, :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  # Setup accessible (or protected) attributes for your model
  attr_accessible :email, :password, :password_confirmation, :remember_me,
                  :name, :cell, :phone, :description, :actived, :admin, :partner
                  
  has_many :imoveis, :dependent => :destroy
  
  validates_uniqueness_of :email, :message => "ja existente. tente outro email"
  validates :email, :presence => { :message => "precisa ser preenchido." }
  validates_presence_of :password, :password_confirmation, :allow_nil => true
       
  validates :name, :description, :presence =>  { :message => "precisa ser preenchido." }
  validates :cell, :phone, :presence => { :message => "precisa ser preenchido." }

end

users_controller.rb

class Admin::UsersController < ApplicationController
  layout "gerenciador"
  before_filter :authenticate_user!, :only => [:edit, :update, :destroy]
  # GET /imoveis
  # GET /imoveis.xml
  def index
    @users = User.all

    respond_to do |format|
      format.html # index.html.erb
      format.xml  { render :xml => @users }
    end
  end
  
  # GET /imoveis/1
  # GET /imoveis/1.xml
  def show
    @user = User.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.xml  { render :xml => @user }
    end
  end
  
  # GET /imoveis/new
  # GET /imoveis/new.xml
  def new
    @user = User.new

    respond_to do |format|
      format.html # new.html.erb
      format.xml  { render :xml => @user }
    end
  end

  # GET /imoveis/1/edit
  def edit
    @user = User.find(params[:id])
  end

  # POST /imoveis
  # POST /imoveis.xml
  def create
    @user = User.new(params[:user])

    respond_to do |format|
      if @user.save
        format.html { redirect_to(admin_user_path(@user), :notice => 'Usuario criado com sucesso!') }
        format.xml  { render :xml => @user, :status => :created, :location => @user }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @user.errors, :status => :unprocessable_entity }
      end
    end
  end

  # PUT /imoveis/1
  # PUT /imoveis/1.xml
  def update
    @user = User.find(params[:id])

    respond_to do |format|
      if @user.update_without_password(params[:user])
        format.html { redirect_to(admin_user_path(@user), :notice => 'Usuario atualizado com sucesso!') }
        format.xml  { head :ok }
      else
        format.html { render :action => "edit" }
        format.xml  { render :xml => @user.errors, :status => :unprocessable_entity }
      end
    end
  end

  # DELETE /imoveis/1
  # DELETE /imoveis/1.xml
  def destroy
    @user = User.find(params[:id])
    @user.destroy

    respond_to do |format|
      format.html { redirect_to(admin_users_url, :notice => 'Usuario removido com sucesso!') }
      format.xml  { head :ok }
    end
  end  
end