Go: Get path parameters from http.Request

Question

I'm developing a REST API with Go, but I don't know how can I do the path mappings and retrieve the path parameters from them.

I want something like this:

func main() {
    http.HandleFunc("/provisions/:id", Provisions) //<-- How can I map "id" parameter in the path?
    http.ListenAndServe(":8080", nil)
}

func Provisions(w http.ResponseWriter, r *http.Request) {
    //I want to retrieve here "id" parameter from request
}

I would like to use just http package instead of web frameworks, if it is possible.

Thanks.

Answer 1

If you don't want to use any of the multitude of the available routing packages, then you need to parse the path yourself:

Route the /provisions path to your handler

http.HandleFunc("/provisions/", Provisions)

Then split up the path as needed in the handler

id := strings.TrimPrefix(req.URL.Path, "/provisions/")
// or use strings.Split, or use regexp, etc.