template.ParseFiles问题

Question

I have the following http.Handle function (simplified):

func loginHandler(w http.ResponseWriter, r *http.Request) {

        cwd, _ := os.Getwd()
        t, err := template.ParseFiles(filepath.Join(cwd, "./views/login.html"))

        if err != nil {
            fmt.Fprintf(w, "503 - Error")
            fmt.Println(err)
        } else {
            t.Execute(w, nil)
        }

}

It works as intended when using go build main.go, however - after running go install, I get an error that it can't find the file (as it is now compiled to /bin/<appname> (where there is no views folder). Apart from adding a views folder to the /bin directory or hardcoding the path, how can I get the template.ParseFiles() to find the correct path?

Is there some standard method to include 'static' resources to be used for the comiled program?

Answer 1

There is no standard method to include static resources for a compiled program; however one common convention is to store configuration in environment variables.

For example, when running your app, put the expected environment variable in the environment:

$> TEMPLATE_VIEWS=/var/local/app/views myapp

And in your code you would find the folder:

func loginHandler(w http.ResponseWriter, r *http.Request) {
    t, err := template.ParseFiles(filepath.Join(os.Getenv("TEMPLATE_VIEWS"), "login.html"))
    if err != nil {
        fmt.Fprintf(w, "503 - Error")
        fmt.Println(err)
    } else {
        t.Execute(w, nil)
    }
}