app/views/contexts/_context.html.erb
<%
@not_done = @not_done_todos.select {|t| t.context_id == context.id }
# invalidate the cache every day because of staleness or
# rendering of "due in x days" that change without touching updated at of the todo
cache [context, @source_view, current_user.date.strftime("%Y%m%d"), @tag_name] do
%>
<div id="c<%= context.id %>" class="container context" style="display:<%= (collapsible && @not_done.empty?) ? "none" : "block" %>">
<h2>
<% if collapsible -%>
<a href="#" class="container_toggle" id="toggle_c<%= context.id %>"><%= image_tag("blank.png", :alt => t('common.collapse_expand')) %></a>
<% end -%>
<% if source_view_is :context %>
<span id="context_name"><%= context.name %></span>
<% else %>
<%= link_to_context( context ) %>
<% end %>
</h2>
<div id="c_<%=context.id%>_target" class="context_target drop_target"></div>
<div id="c<%= context.id %>items" class="items toggle_target">
<div id="c<%= context.id %>empty-nd" style="display:<%= @not_done.empty? ? 'block' : 'none'%>;">
<div class="message"><p><%= t 'contexts.no_actions' %></p></div>
</div>
<%= render :partial => "todos/todo", :collection => @not_done, :locals => { :parent_container_type => "context" } %>
</div>
</div>
<% end %>