gistfile1.txt

def events_below_context(self, context, request, permission='view'):
    """
    Get recursive all children of the given context.

    :result: List with all children of a given context.
    :rtype: list
    """
    tree = nodes_tree(request,
                      context=context,
                      permission=permission)
    return [n for n in tree.tolist()[1:] if n.type_info.name == u'Event']


and in the view code:

    now = datetime.datetime.now()

    if show_events_scope in ['context_only', 'site_wide']:

        if show_events_scope == 'context_only':
            query = session.query(Event).filter(Event.parent_id == context.id)
        else:  # show_events_scope == 'site_wide'
            query = session.query(Event)

        future = or_(Event.start > now, Event.end > now)
        upcoming = query.filter(future).order_by(Event.start).all()
        past = query.filter(Event.start < now).order_by(desc(Event.start)).all()

    else:  #show_events_scope == 'recursive':

        events = events_below_context(context, request)
        if context.type_info.name == u'Event':
            events.append(context)

        upcoming = [e for e in events if e.start > now and e.end > now]
        past = [e for e in events if e.start < now]

    upcoming = [event for event in upcoming if\
                has_permission('view', event, request)]
    past = [event for event in past if\
                has_permission('view', event, request)]