func (r Router) listUsers(w http.ResponseWriter, req *http.Request) {
user := models.User{DB: r.DB}
result, err := user.List()
w.Header().Set("Content-Type", "application/json; charset=UTF-8")
if err != nil {
w.WriteHeader(500)
io.WriteString(w, err.Error())
} else {
w.WriteHeader(200)
json.NewEncoder(w).Encode(result)
}
}
