panel/app/views/posts/index.haml

.row
  .col
    %h1= @site.name

.row
  .col
    = link_to t('posts.new'), new_site_post_path(@site),
      class: 'btn btn-success'

.row
  .col
    %table.table.table-condensed.table-striped
      %tbody
        - @site.posts.each do |post|
          %tr
            %td= link_to post.title, site_post_path(@site, post)
            %td= post.date.strftime('%F')