_training.html.erb

<tr>
  <% speakers = data.program.speakers.select {|spk| training.speakers.include? spk.ident} %>
  <td>
  <% speakers.each do |speaker| %>
    <% if speakers.length > 1 %>
        <%= image_tag "speakers/#{speaker.image}", class: "spkPic_multiple" %>
    <% else %>
        <%= image_tag "speakers/#{speaker.image}", class: "spkPic2" %>
    <% end %>
  <% end %>
  </td>
  <td class="abstract" id="<%= training.slug %>">
      <h4>
        <a href="#<%= training.slug %>" class=plainlink><%= training.title %></a>
      </h4>
      <h5><% if training.focus %> <%= training.focus %>, <% end %>By
        <% speakers.each_with_index do |speaker, idx| %>
          <% if idx != 0 %> , <% end %>
          <% if speaker.twitter %>
            <%= link_to speaker.name, "http://www.twitter.com/#{speaker.twitter}" %>
          <% else %>
            <%= link_to speaker.name, "http://github.com/#{speaker.github}" %>
          <% end %>
        <% end %>
      </h5>
      <p>
        <%= training.abstract %>
      </p>
  </td>
</tr>
<tr>
  <td colspan="2">
    <hr />
  </td>
</tr>