block_helper_two_blocks.rb

# Helper file

class Block < BlockHelpers::Base
  
  def initialize(opts={})
    @opts = opts
  end
  
  def display(body)
    content_tag :div, body, :class => "block #{@opts[:class]}"
  end
  
  class Head < BlockHelpers::Base
    def display(body)
      content_tag :div, body, :class => 'block_head'
    end
  end
  
  class Content < BlockHelpers::Base
    def display(body)
      content_tag :div, body, :class => 'block_content'
    end
  end
  
end

# Views

<% block :class => 'centre login' do |b| %>
  <% b.head do |bh| %>
    CONTENT FOR BLOCK_HEAD
  <% end %>
  <% b.content do |bc| %>
    CONTENT FOR BLOCK_CONTENT
  <% end %>
<% end %>

# Output

<div class="block centre login"> 
  <div class="block_head"> 
    CONTENT FOR BLOCK_HEAD
  </div> 
  <div class="block_content"> 
    CONTENT FOR BLOCK_CONTENT
  </div> 
</div>