def get__self(self, obj):
    path = reverse('projects-subprojects-detail', kwargs={'parent_lookup_parent__slug': obj.parent.slug, 'alias_slug': obj.alias})
    return self._absolute_url(path)
def get__self(self, obj):
    path = reverse('projects-subprojects-detail', kwargs={'parent_lookup_parent__slug': obj.parent.slug, 'alias_slug': obj.alias})
    return self._absolute_url(path)