Golang - Capture Chi query params with reflection

main.go

package main

import (
	"encoding/json"
	"net/http"
	"reflect"

	"github.com/go-chi/chi/v5"
)

const paramTag = "param"

func main() {
	r := chi.NewRouter()
	r.Get("/", func(w http.ResponseWriter, r *http.Request) {
		params := captureParams[Params](r)
		marshal, _ := json.Marshal(params)
		w.Header().Set("Content-Type", "application/json")
		w.Write(marshal)
	})
	http.ListenAndServe(":3000", r)
}

type Params struct {
	ID   string `json:"id" param:"id"`
	Name string `json:"name" param:"name"`
}

func captureParams[E interface{}](r *http.Request) E {
	values := r.URL.Query()
	var e E
	targetType := reflect.TypeOf(&e).Elem()
	targetValue := reflect.ValueOf(&e).Elem()
	for i := 0; i < targetType.NumField(); i++ {
		field := targetType.Field(i)
		tag := field.Tag.Get(paramTag)
		paramValue := values.Get(tag)
		targetValue.Field(i).SetString(paramValue)
	}
	return e
}