def get_builds(self, obj):
    path = reverse('projects-versions-builds-list', kwargs={'parent_lookup_project__slug': obj.project.slug, 'parent_lookup_version__slug': obj.slug})
    return self._absolute_url(path)
def get_builds(self, obj):
    path = reverse('projects-versions-builds-list', kwargs={'parent_lookup_project__slug': obj.project.slug, 'parent_lookup_version__slug': obj.slug})
    return self._absolute_url(path)