How to have an optional query in GET request using Gorilla Mux?

go gorilla
levo4ka picture levo4ka · Apr 12, 2017 · Viewed 8.2k times · Source

I would like to have some of my query parameters be optional. As for now, I have 

r.HandleFunc("/user", userByValueHandler).
    Queries(
        "username", "{username}",
        "email", "{email}",
    ).
    Methods("GET")

But in this case "username" AND "email" needs to be present in the request. I want to have more flexible choice: have 2 of them OR have just one of them (but not zero parameters).

Thanks!

Answer

levo4ka picture levo4ka · Apr 21, 2017

So I found the solution to re-write my logic as:

r.HandleFunc("/user", UserByValueHandler).Methods("GET")

And in UserByValueHandler we can have something like:

func UserByValueHandler(w http.ResponseWriter, r *http.Request) {
       v := r.URL.Query()

       username := v.Get("username")
       email := v.Get("email")
       .....
}

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