docs: def build_ajax_rsvps(event, user_profile):
      """Return link and list strings for a given event."""
      if user_profile in event.rsvps.all():
          link_string = True
      else:
          link_string = False
  
      if not event.rsvps.all().count():
          list_string = 'No RSVPs.'
      else:
          list_string = 'RSVPs:'
          for counter, profile in enumerate(event.rsvps.all()):
              if counter > 0:
                  list_string += ','
  
              list_string += \
                  ' <a class="page_link" title="View Profile" href="{url}">' \
                      '{name}</a>'.format(
                          url=reverse(
                              'member_profile',
                              kwargs={'targetUsername': profile.user.username}
                          ),
                          name='You' if profile.user == user_profile.user \
                              else profile.user.get_full_name(),
                      )
      return (link_string, list_string)