[web2py] drop down menu {{if 'session.%sDropdown' %_name:}}

[Annet]

In a function I set up the following menu:

def menu():
    session.site_menu=[
    ['Home',request.controller=='site' and 
request.function=='index',URL('site','index',args=session.id)]]
    if session.wh:
        session.site_menu.append(['Over 
ons',request.controller=='whQ',URL('whQ','index',args=session.id)])
    if session.cal:
        
session.site_menu.append(['Agenda',request.controller=='calendar',URL('calendar','index',args=session.id)])
        session.AgendaDropdown=[]
        if session.cal.opening_hours:
            
session.AgendaDropdown.append(['Openingstijden',request.function=='openingHours',\
            URL('calendar','openingHours',args=session.id)])
        if session.cal.event_list:
            session.AgendaDropdown.append(['Event 
list',request.function=='eventList',\
            URL('calendar','eventList',args=session.id)])
        if session.cal.timetable:
            
session.AgendaDropdown.append(['Lesrooster',request.function=='timetable',\
            URL('calendar','timetable',args=session.id)])
        if session.cal.course_table:
            
session.AgendaDropdown.append(['Cursusrooster',request.function=='courseTable',\
            URL('calendar','courseTable',args=session.id)])
    return None

In a menu view I am trying to get this to work:

<ul class="nav">
    {{for _name,_active,_link in session.site_menu:}}
      {{if 'session.%sDropdown' %_name:}}
        <li class="dropdown" {{if _active:}} class="active" {{pass}}>
          <a href="" class="dropdown-toggle" 
data-toggle="dropdown">{{=_name}}
          <b class="caret"></b></a>
          <ul class="dropdown-menu">
          {{for _name,_active,_link in 'session.%sDropdown' %_name:}}
            <li {{if _active:}} class="active" {{pass}}>
              <a href="{{=_link}}">{{=_name}}</a>
             </li>
          {{pass}}
          <ul>
        </li>
      {{else:}}
        <li {{if _active:}} class="active" {{pass}}>
          <a href="{{=_link}}">{{=_name}}</a>
        </li>
      {{pass}}
    {{pass}}
  </ul>

The problem is that this doesn't work:

{{if 'session.%sdropdown' %_name:}}

It should be rendered into:

{{if session.AgendaDropdown:}}

What is the correct syntax to get this to work.


Kind regards,

Annet