Atualizando para o Rails 2.3.2

app/views/widgets/_menu_disciplina.html.erb

@@ -0,0 +1,21 @@
+	<!-- Menu Disciplina -->
+	<div class="menu">
+		<h1>Disciplina</h1>
+		<ul>
+			<li><%= link_to "Visão Geral", course_url(@course) %></li>
+			<li><%= link_to "Noticias", course_news_url(@course) %></li>
+			<li><%= link_to "Calendário", course_events_url(@course) %></li>
+			<li><%= link_to "Mudanças recentes", course_log_url(@course) %></li>
+		</ul>
+	</div>
+
+  <% if @course.related_courses.length > 1 %>
+	<div class="menu">
+		<h1>Semestres</h1>
+		<ul>
+      <% for c in @course.related_courses %>
+        <li><%= (c == @course) ? c.period : link_to(c.period, course_url(c)) %></li>
+      <% end %>
+		</ul>
+	</div>
+  <% end %>