I am following the golang tutorial for writing my web app. I am modifying the code from tutorial page, so that I can execute the saved page as go code (similar to go playground). But when I try to execute the saved go file using the os/exec package, it throws the following error.
exec: "go run testcode.go": executable file not found in $PATH
Following is my modified code :
// Structure to hold the Page
type Page struct {
Title string
Body []byte
Output []byte
}
// saving the page
func (p *Page) save() { // difference between func (p *Page) and func (p Page)
filename := p.Title + ".go"
ioutil.WriteFile(filename, p.Body, 0777)
}
// handle for the editing
func editHandler(w http.ResponseWriter, r *http.Request) {
title := r.URL.Path[len("/edit/"):]
p, err := loadPage(title)
if err != nil {
p = &Page{Title: title}
}
htmlTemp, _ := template.ParseFiles("edit.html")
htmlTemp.Execute(w, p)
}
// saving the page
func saveHandler(w http.ResponseWriter, r *http.Request) {
title := r.URL.Path[len("/save/"):]
body := r.FormValue("body")
p := Page{Title: title, Body: []byte(body)}
p.save()
http.Redirect(w, r, "/exec/"+title, http.StatusFound) // what is statusfound
}
// this function will execute the code.
func executeCode(w http.ResponseWriter, r *http.Request) {
title := r.URL.Path[len("/exec/"):]
cmd := "go run " + title + ".go"
//cmd = "go"
fmt.Print(cmd)
out, err := exec.Command(cmd).Output()
if err != nil {
fmt.Print("could not execute")
fmt.Fprint(w, err)
} else {
p := Page{Title: title, Output: out}
htmlTemp, _ := template.ParseFiles("output.html")
htmlTemp.Execute(w, p)
}
}
Please tell me why I am not able to able to execute the go file.
