code: def get_linkrolls(num='All', destination_slug=None, *args, **kwargs):
      
      if destination_slug:
          linkrolls = LinkRoll.objects.filter(destination__slug=destination_slug)
      else:
          linkrolls = LinkRoll.objects.all()
  
      if num is not 'All':
          linkrolls = linkrolls[0:num]
  
      return {
          'object_list': linkrolls
      }
docs: Takes an optional number and destination slug and returns a list of LinkRolls.
      Given a number, return list limited to the given number.
      Given a destination slug, limit linkrolls to the matching destination.
      Usage:
          {% get_linkrolls %}
          {% get_linkrolls 5 %}
          {% get_linkrolls 5 some_slug %}