added a config package and calling template cache creation from main

Author: jagottsicher

cmd/web/main.go

@@ -2,15 +2,27 @@ package main
 
 import (
 	"fmt"
+	"log"
 	"net/http"
 
+	"github.com/jagottsicher/myGoWebApplication/pkg/config"
 	"github.com/jagottsicher/myGoWebApplication/pkg/handlers"
+	"github.com/jagottsicher/myGoWebApplication/pkg/render"
 )
 
 const portNumber = ":8080"
 
 // main is the main function
 func main() {
+	var app config.AppConfig
+
+	tc, err := render.CreateTemplateCache()
+	if err != nil {
+		log.Fatal("cannot create template cache")
+	}
+
+	app.TemplateCache = tc
+
 	http.HandleFunc("/", handlers.Home)
 	http.HandleFunc("/about", handlers.About)
 

config/config.go

@@ -0,0 +1,8 @@
+package config
+
+import "html/template"
+
+// AppConfig is a struct holding die application's configuration
+type AppConfig struct {
+	TemplateCache map[string]*template.Template
+}

pkg/config/config.go

@@ -11,11 +11,7 @@ import (
 // rendernTemplate serves as a wrapper and renders
 // a layout and a template from folder /templates to a desired writer
 func RenderTemplate(w http.ResponseWriter, tpml string) {
-	// create a template cache
-	tc, err := createTemplateCache()
-	if err != nil {
-		log.Fatalln("error creating template cache ", err)
-	}
+	// get the template cache from the app config
 
 	// get the right template from cache
 	t, ok := tc[tpml]
@@ -38,7 +34,7 @@ func RenderTemplate(w http.ResponseWriter, tpml string) {
 	}
 }
 
-func createTemplateCache() (map[string]*template.Template, error) {
+func CreateTemplateCache() (map[string]*template.Template, error) {
 	theCache := map[string]*template.Template{}
 
 	// get all available files *-page.tpml from folder ./templates