def get_href(self, request):
     try:
         if self.pagina:
             return self.pagina.url
         elif self.url:
             return replace_link(self.url, request)
         else:
             return ""
     except Exception, e:
         return ''
 def get_allowed_url(self, request):
     return replace_link(self.mostrar_solo_en, request)
 def get_not_allowed_url(self, request):
     return replace_link(self.no_mostrar_en, request)