Ruby on Rails 3 Form radio button, text_field, error_messages, date_select

<% form_for @user do |f| %>

<% if @user.errors.any? %>

   <div class="error_messages">

<h2>Form is invalid</h2>

<ul>

<% for message in @user.errors.full_messages %>

<li><%= message %></li>

<% end %>

</ul>

</div>

<% end %>

<p>

<%= f.label :email %><br />

<%= f.text_field :email %>

</p>

<p>

<%= f.label :password %><br />

<%= f.password_field :password %>

</p>

<p>

<%= f.label :password_confirmation %><br />

<%= f.password_field :password_confirmation %>

</p>

<p>

<%= f.label :name %><br />

<%= f.text_field :name %>

</p>

<p>

<%= f.label :address %><br />

<%= f.text_field :address %>

</p>

<p>

<%= f.label :phone_number %><br />

<%= f.text_field :phone_number %>

</p>

<p>

<%= f.label :birthday %><br />

<%= f.date_select :birthday, :start_year => 1950 %>

</p>

<p>

<%= f.label :gender %><br />

<%= f.radio_button :gender, true %>Male

    <%= f.radio_button :gender, false %>Female

</p>

<p>

<%= f.label :facebook %><br />

<%= f.text_field :facebook %>

</p>

<p>

<%= f.label :blog %><br />

<%= f.text_field :blog %>

</p>

<p>

<%= recaptcha_tags %>

</p>

<p>

<%= f.submit "Sign Up"%>

</p>

<% end %>