osem-fcy/app/views/schedule/index.html.erb

<div id="schedule-content">
  <h2> Schedule for <%= @conference.title %></h2>
  <ul class="nav nav-tabs">
    <% @dates.each do |date| %>
      <li <%= "class=active" if @dates.first == date %>>
        <%= link_to date, "#" + "#{date}", "data-toggle" => "tab" %>
      </li>
   <% end %>
   </ul>

  <div class="tab-content">
    <% @dates.each do |date| %>
      <div class="tab-pane <%= 'active' if @dates.first == date %>" id ="<%= date %>" >
        <table class="table table-striped table-bordered" width="100%">
          <tr>
            <th>Time</th>
            <% @rooms.each do |room| %>
              <th><%= room.name %></th>
            <% end %>
          </tr>

              <% span = {} %>
              <% @rooms.each do |room| %>
                <% span[room.id] = 1 %>
              <% end %>

          <% conf_start = DateTime.parse("#{date} 09:00") %>
          <% conf_end = DateTime.parse("#{date} 19:00") %>

          <% while conf_start < conf_end %>

            <tr>
              <td style="width:10%">
                <%= conf_start.strftime("%H:%M") %>
              </td>

              <% @rooms.each do |room| %>
                <% event = @events.find_all{|event|event.start_time and event.start_time.strftime("%Y-%m-%d %H:%M").eql? conf_start.strftime("%Y-%m-%d %H:%M") and event.room_id == room.id } %>
                <% if !event.empty? %>
                  <!-- There is an event, calculate the span and show it -->
                  <% span[room.id] = event[0].event_type.length / 15 %>
                  <td style="width:45%" rowspan ="<%= span[room.id] %>">
                    <%= event[0].title %><br>
                   </td>
                   <% span[room.id] = span[room.id] + 1 %>
                  <% end %>
                  <% if span[room.id] == 1 %>
                    <!-- span equals 1 show an empty td -->
                    <td  style="width:45%"class="empty <%= "room" + "#{room.id}" %>">
                      Empty
                    </td>
                  <% end %>
                  <% if span[room.id] > 1 %>
                  <!-- span is <%= span[room.id] %> and bigger than 1, substract 1 from span -->
                    <% span[room.id] = ( span[room.id] - 1 ) if span[room.id] > 1 %>
                  <% end %>
               <%end %>
            </tr>
            <% conf_start += 15.minutes %>
          <%end %>
        </table>
      </div>
    <% end %>
  </div>