Sharing data with templates: correct import cycle

pkg/render/render.go

@@ -3,7 +3,7 @@ package render
 import (
 	"bytes"
 	"go-udemy-web-1/pkg/config"
-	"go-udemy-web-1/pkg/handlers"
+	"go-udemy-web-1/pkg/models"
 	"html/template"
 	"log"
 	"net/http"
@@ -17,8 +17,13 @@ func NewTemplates(a *config.AppConfig) {
 	app = a
 }
 
+// AddDefaultData adds default template data
+func AddDefaultData(td *models.TemplateData) *models.TemplateData {
+	return td
+}
+
 // RenderTemplate renders a HTML template file
-func RenderTemplate(w http.ResponseWriter, tmpl string, td *handlers.TemplateData) {
+func RenderTemplate(w http.ResponseWriter, tmpl string, td *models.TemplateData) {
 	var tc map[string]*template.Template
 	if app.UseCache {
 		// get the template cache from the app config
@@ -36,7 +41,10 @@ func RenderTemplate(w http.ResponseWriter, tmpl string, td *handlers.TemplateDat
 	// Write to a buffer to make sure that the template can be read and
 	// written successfully
 	buf := new(bytes.Buffer)
-	err := t.Execute(buf, nil)
+
+	td = AddDefaultData(td)
+
+	err := t.Execute(buf, td)
 	if err != nil {
 		log.Println(err)
 	}