gem "haml"

%title

  = @title

  \= @title

<title>

  MyPage

  = @title

</title>

%table#data

  %tbody

    %tr

      %td= '@data'

<table class="data">

  <tbody>

    <tr>

      <td>数据</td>

    </tr>

  </tbody>

</table>

def html_attrs(lang = 'en-US')

  {:xmlns => "http://www.w3.org/1999/xhtml", 'xml:lang' => lang, :lang => lang}

end

# haml

%html{html_attrs('fr-fr')} 

{data: {sample: 1, test: 2}}

# => data-sample="1" data-test="2"

%span(class="widget_#{@widget.number}")

%div{id: %w(a b c), class: %w(a b c)} 123

<div class="a b c" id="a_b_c">

  123

</div>

.sample a

%div.sample a

<div class="sample">

    a

</div>

%br/

<%= ... %>

= link_to 'sample', root_path

<% ... %>

- (1..100).each do |i|

  %span= "a: #{i}"

  %span= "b: #{i}"

  %br/

- (1..100).each do |i|

  %span a: #{i}

  %span b: #{i}

  %br/