Remember me feature implementation of Rails form using Rails 3

I want to add remember me feature in my login form using Rails 3.I can store session id and cookie.Please check some of my below code and please help me to add some stuff inside view as well as controller page.

views/homes/member.html.erb

<% if current_user %>
<div class="totaldiv">
  <div class="navdiv"><span>STUDENT INFORMATION</span><span>Logged in as <%= current_user.email %></span></div>
  <div class="wrapper">
  <div id="leftsidebtn">
 <ul>
  <li><a href="/homes/issuebooks">Book issue</a></li>
   <li><a href="/homes/availablebooks">Books Available</a></li>
   <li><a href="/homes/magazines?user_id=<%= current_user.id %>">Magazines Purchase</a></li>
   <li><a href="/homes/newspaper">Newspaper Purchase</a></li>
   <li><a href="/homes/userprofile?id=<%= current_user.id %>">Profile settings</a></li>
   <li><a href="/homes/blog">My Blog</a></li>
<li><a href="/sessions/removeuser">Log Out</a></li>
 </ul>  
</div>
  </div>
  <div class="restdiv" id="ex3" >
  <center>


</center>
  </div>
</div>
<% else %>
<div class="totaldiv">
  <div class="navdiv"><span>STUDENT INFORMATION</span></div>
  <div class="wrapper">
  <div id="leftsidebtn">
 <ul>
<li><a href="/homes/registration">Registration</a></li>
<li><a href="/homes/index">Back</a></li>
 </ul>  
</div>
  </div>
  <div class="restdiv" id="ex3" >
    <center>

  <div class="studentlogin">
    <h1>Login Here</h1>
<section class="studentloginloginform cf">
      <%= form_for :users,:url => {:action => 'loginuser',:controller => 'sessions'} do |f| %>
      <% if @users.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@users.errors.count, "error") %> prohibited this post from being saved:</h2>

      <ul>
      <% @users.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>
      <ul>
        <li>
          <label for="usermail">Email</label>
          <%= f.email_field :email,placeholder:"yourname@email.com" %>
        </li>
        <li>
          <label for="password">Password</label>
           <%= f.password_field :password,placeholder:"password" %>
          </li>
          <li class="keeplogin"> 
                                    <input type="checkbox" name="loginkeeping" id="loginkeeping" value="loginkeeping" /> 
                                    <label for="loginkeeping">Keep me logged in</label>
                                </li>
        <li>
          <%= f.submit 'LogIn',:class => 'studentsubmit' %>
        </li>
        <li class="reg_member">
          Not a member ? <%= link_to 'Register Here',homes_registration_path %>
        </li>
        <li>
          <%= link_to 'Forget your password',homes_forgetpass_path %>
        </li>
      </ul>
      <% end %>
  </section>
</div>
</center>
  </div>
</div>
 <% end %>

controller/sessions_controller.rb

class SessionsController < ApplicationController
    def loginuser
        @users=User.authenticate(params[:users][:email], params[:users][:password])
        if @users
            session[:user_id]=@users.id
            cookies.signed[:user_id]=@users.id
            flash[:notice]="login successfull"
            flash[:color]="valid"
            redirect_to :action => 'member',:controller => 'homes'
        else
            flash[:notice]="could not Logged in"
            flash[:color]="invalid"
            redirect_to :action => 'member',:controller => 'homes'
        end
    end
    def removeuser
        session[:user_id] = nil
        cookies.delete :user_id
        flash[:notice]="user logged out successfully"
        flash[:color]="valid"
        redirect_to :action => 'member', :controller => 'homes'
    end
end

As i am new to RoR please help me to resolve this issue.