gistfile1.rbx

##########      Why does the yield output outside the content_tag block?

# Method

  def submit(*args)
    @template.content_tag(:div, :class => "save_actions") {
      super(*args) + (yield).to_s
    }
  end

# Calling Haml block

    = f.submit "Sign up" do
      - if @site.beta_invites?
        or 
        = link_to "Request a beta invite", new_invite_path

### Output

or
<a href="/invites/new">Request a beta invite</a> 
<div class="save_actions"><input id="user_submit" name="commit" type="submit" value="Sign up" /></div>