Example of parsing templates and handling HTTP requests

createSimpleIndexHandler.go

// templates references the specified templates and caches the parsed results
// to help speed up response times.
var templates = template.Must(template.ParseFiles("./templates/base.html", "./templates/body.html"))

// index is the handler responsible for rending the index page for the site.
func index() http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		b := struct {
			Title        template.HTML
			BusinessName string
			Slogan       string
		}{
			Title:        template.HTML("Business | Landing"),
			BusinessName: "Business,",
			Slogan:       "we get things done.",
		}
		err := templates.ExecuteTemplate(w, "base", &b)
		if err != nil {
			http.Error(w, fmt.Sprintf("index: couldn't parse template: %v", err), http.StatusInternalServerError)
			return
		}
		w.WriteHeader(http.StatusOK)
	})
}