test.go

/*
[kingwill101@Science-Dept gopress]$ go run main.go
panic: template: home.gtpl:58: function "sayHello" not defined

goroutine 1 [running]:
html/template.Must(0x0, 0x7f02443b4000, 0xc820169820, 0x7f02443b4000)
	/usr/local/go/src/html/template/template.go:330 +0x4b
org/gopress/gopress.init()
	/home/kingwill101/Documents/GO/src/org/gopress/gopress/handlers.go:9 +0xdb
main.init()
	/home/kingwill101/Documents/GO/src/org/gopress/main.go:9 +0x3b

goroutine 17 [syscall, locked to thread]:
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1696 +0x1
exit status 2


*/



type GoPress struct {
	currentUser User
	db          gorm.DB
	loggedIn    bool
	router      *mux.Router
	gp_helper   Helper
	templates   *template.Template
}

func (g *GoPress) Run() {
	g.initDB()
	g.routerInit()
}


func (gp *GoPress) routerInit() {

	gp.register_tpl_functions()
	gp.router = mux.NewRouter()

	gp.router.HandleFunc("/", gp.home).Methods("GET")
	gp.router.HandleFunc("/register", gp.registration).Methods("POST", "GET")
	gp.router.HandleFunc("/gp-panel", gp.adminPanel).Methods("POST", "GET")
	gp.router.HandleFunc("/gp-login", gp.adminLogin).Methods("POST", "GET")
	gp.router.HandleFunc("/gp-logout", gp.adminLogOut)

	assets := http.StripPrefix(DEFAULT__ASSET_URI, http.FileServer(http.Dir(DEFAULT_THEME_STATIC)))
	gp.router.PathPrefix(DEFAULT__ASSET_URI).Handler(assets)

	assets_admin := http.StripPrefix(ADMIN_ASSET_URI, http.FileServer(http.Dir(ADMIN_STATIC)))
	gp.router.PathPrefix(ADMIN_ASSET_URI).Handler(assets_admin)

	log.Printf("%s: %s\n", "theme-directory", DEFAULT_THEME_STATIC)

	http.Handle("/", gp.router)
	http.ListenAndServe(":8100", nil)
}


func (gp *GoPress) home(w http.ResponseWriter, r *http.Request) {

	var err error
	// tpl.ExecuteTemplate(os.Stdout, "index.html", tplVars)
	//home.gtpl register.gtpl login.gtpl
	gp.templates = template.Must(template.New("home.gtpl").Funcs(gp.gp_helper.GetFuncs()).ParseGlob(DEFAULT_THEME + "/templates/*"))
	err = gp.templates.ExecuteTemplate(w, "home.gtpl", nil)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}

//helper struct 

func (gp *GoPress) url_for(path string) string {
	return "path"
}

func (gp *GoPress) PrintHello() string {
	return "Hello"
}

func (gp *GoPress) Assets_admin(path string) string {
	return ADMIN_ASSET_URI + path
}

func (gp *GoPress) Assets_default(path string) string {
	return ADMIN_ASSET_URI + path
}

type Helper struct {
	tpl_functs template.FuncMap
}

func (h *Helper) Init() {
	h.tpl_functs = template.FuncMap{}

}

func (h *Helper) AddFunc(key string, _func interface{}) {
	h.tpl_functs[key] = _func
}

func (h *Helper) RemoveFunc(key string) {
	delete(h.tpl_functs, key)
}

func (h *Helper) GetFuncs() template.FuncMap {
	return h.tpl_functs
}

//Functions to be used in template files
func (gp *GoPress) register_tpl_functions() {
	gp.gp_helper.Init()
	gp.gp_helper.AddFunc("admin_assets", gp.Assets_admin)
	gp.gp_helper.AddFunc("theme_assets", gp.Assets_default)
	gp.gp_helper.AddFunc("sayHello", gp.PrintHello)
}