How to generate a link relative to the current path in flask?

Question

Flask

There is a function with a route

@app.route("/", defaults={'path': ''},methods=['GET'])
@app.route("/<path:path>",methods=['GET'])
def index(path)

In the template I do url_for('index', path=path) , which naturally leads to the fact that links are created with a path only relative to the base link. How can I make it so that the current path is also taken into account?
Link example test.ru/test/test2

Answer 1

https://stackoverflow.com/a/21498733/4108542