Update db function and add to web-back

cmd/web/handlers.go

@@ -1,8 +1,10 @@
 package main
 
 import (
-	"myapp/internal/models"
 	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
 )
 
 func (app *application) VirtualTerminal(w http.ResponseWriter, r *http.Request) {
@@ -43,12 +45,12 @@ func (app *application) PaymentSucceeded(w http.ResponseWriter, r *http.Request)
 
 // ChargeOnce displays the page to buy one widget
 func (app *application) ChargeOnce(w http.ResponseWriter, r *http.Request) {
-	widget := models.Widget{
-		ID:             1,
-		Name:           "Custom Widget",
-		Description:    "Paris 2024",
-		InventoryLevel: 10,
-		Price:          1000,
+	id := chi.URLParam(r, "id")
+	widgetID, _ := strconv.Atoi(id)
+
+	widget, err := app.DB.GetWidget(widgetID)
+	if err != nil {
+		app.errorLog.Println(err)
 	}
 
 	data := make(map[string]interface{})

cmd/web/routes.go

@@ -11,7 +11,7 @@ func (app *application) routes() http.Handler {
 
 	mux.Get("/virtual-terminal", app.VirtualTerminal)
 	mux.Post("/payment-succeeded", app.PaymentSucceeded)
-	mux.Get("/charge-once", app.ChargeOnce)
+	mux.Get("/widget/{id}", app.ChargeOnce)
 
 	fileServer := http.FileServer(http.Dir("./static"))
 	mux.Handle("/static/*", http.StripPrefix("/static", fileServer))

cmd/web/templates/base.layout.gohtml

@@ -43,7 +43,7 @@
                                aria-expanded="false">Products</a>
                             <ul class="dropdown-menu">
                                 <li>
-                                    <a class="dropdown-item" href="/charge-once">Buy one widget</a>
+                                    <a class="dropdown-item" href="/widget/1">Buy one widget</a>
                                 </li>
                                 <li>
                                     <a class="dropdown-item" href="#">Subscription</a>