package main import ( "embed" "fmt" "html/template" "net/http" "strings" ) type templateData struct { StringMap map[string]string IntMap map[string]int FloatMap map[string]int Data map[string]interface{} CSRFToken string Flash string Warning string Error string API string CSSVersion string IsAuthenticated int } var functions = template.FuncMap{} //go:embed templates var templateFS embed.FS func (app *application) addDefaultData(td *templateData, r *http.Request) *templateData { return nil } func (app *application) renderTemplate( w http.ResponseWriter, r *http.Request, page string, td *templateData, partials ...string, ) error { var t *template.Template var err error templateToRender := fmt.Sprintf("templates/%s.page.gohtml", page) _, templateInMap := app.templateCache[templateToRender] if app.config.env == "production" && templateInMap { t = app.templateCache[templateToRender] } else { t, err = app.parseTemplate(partials, page, templateToRender) if err != nil { app.errorLog.Println(err) return err } } if td == nil { td = &templateData{} } td = app.addDefaultData(td, r) err = t.Execute(w, td) if err != nil { app.errorLog.Println(err) return err } return nil } func (app *application) parseTemplate( partials []string, page, templateToRender string, ) (*template.Template, error) { var t *template.Template var err error // build partials if len(partials) > 0 { for i, x := range partials { partials[i] = fmt.Sprintf("tempaltes/%s.partial.gohtml", x) } t, err = template.New(fmt.Sprintf("%s.page.gohtml", page)). Funcs(functions). ParseFS(templateFS, "templates/base.layout.gohtml", strings.Join(partials, ","), templateToRender) } else { t, err = template.New(fmt.Sprintf("%s.page.gohtml", page)). Funcs(functions). ParseFS(templateFS, "templates/base.layout.gohtml", templateToRender) } if err != nil { app.errorLog.Println(err) return nil, err } app.templateCache[templateToRender] = t return t, nil }