How to use "slashUrls" instead of QueryString. (without ordering)

I'm using gorilla-mux to route my urls but I found a difficulty:

My client prefer a url with slashes instead of a traditional query string. I mean:

domain/handler/filter1/val1/filter2/val2...

Instead of

domain/handler?filter1=val1&filter2=val2...

Important Issues:
When using query string, the 'variables' order isn't important and any of them can be missing without get a wrong routing or a NotFound.

When using query string, the order of 'vars' isn't important and I can miss any of them without get a wrong routing
At this moment I'm writting a permutation algorithm that create urls for handle them with same function.

Is there a better way to do that?

I wrote a "url generator" for my needs

https://github.com/daniloanp/SlashedQueryUrls

It's very simple and naive but it's working for me.

A good example of usage is in my reposiry:

package main
import (
"fmt"
"github.com/daniloanp/muxUrlGen"
"github.com/gorilla/mux"
"net/http"
)
func HandleUrlsWithFunc(rtr *mux.Router, urls []string, handler func(w http.ResponseWriter, r *http.Request)) {
for _, url := range urls {
rtr.HandleFunc(url, handler)
}
}
func echoVars(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
fmt.Fprintln(w, r.URL.String(), "\n\n")
for k, i := range mux.Vars(r) {
fmt.Fprintln(w, k, ": ", i)
}
}
func main() {
var url string
var urls []string
rtr := mux.NewRouter()
url = "/handl/v1/{v}/v2/{v'}"
rtr.HandleFunc(url, echoVars)
// The above code works by we cannot missing any var OR Even
// Using "long notation"
urls = muxUrlGen.GetUrlVarsPermutations("/handlLong/v1/{v:[0-9]+}/v2/{v'}", true)
HandleUrlsWithFunc(rtr, urls, echoVars)
// Using "long notation" and Optional vars
urls = muxUrlGen.GetUrlVarsPermutations("/handlLongOptional/v1/{v}?/v2/{v'}?", true)
HandleUrlsWithFunc(rtr, urls, echoVars)
// Using "short notation"
urls = muxUrlGen.GetUrlVarsPermutations("/handlShort/{v1}/{v2}", false)
HandleUrlsWithFunc(rtr, urls, echoVars)
// Using "short notation" and Optional vars
urls = muxUrlGen.GetUrlVarsPermutations("/handlShortOptional/{v1}?/{v2}?", false)
HandleUrlsWithFunc(rtr, urls, echoVars)
http.Handle("/", rtr)
fmt.Println("Server running at http://127.0.0.1:8080")
http.ListenAndServe(":8080", nil)
}

Thanks for everyone.