text: from rest_framework.serializers import ReadOnlyField, Serializer
  
  from jmbo import api as jmbo_api
  
  from jmbo_link.models import Link
  
  
  class PropertiesMixin(Serializer):
      content = ReadOnlyField()
  
      class Meta:
          fields = ("content",)
  
  
  class LinkSerializer(
      PropertiesMixin, jmbo_api.ModelBaseSerializer
      ):
  
      class Meta(jmbo_api.ModelBaseSerializer.Meta):
          model = Link
  
  
  class LinkObjectsViewSet(jmbo_api.ModelBaseObjectsViewSet):
      queryset = Link.objects.all()
      serializer_class = LinkSerializer
  
  
  class LinkPermittedViewSet(jmbo_api.ModelBasePermittedViewSet):
      queryset = Link.permitted.all()
      serializer_class = LinkSerializer
  
  
  def register(router):
      return jmbo_api.register(
          router,
          (
              ("link-link-permitted", LinkPermittedViewSet),
              ("link-link", LinkObjectsViewSet)
          )
      )
  