при копировании возникает ошибка “A node may not be made a sibling of any of its descendants”
def create_copy_node_new(self, node, parent): old_foreignkey_field = node.foreignkey_field node.pk = None node.id = None node.parent = parent node.save() if old_foreignkey_field: node.foreignkey_field = old_foreignkey_field node.save() return node