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>

internal/models/models.go

@@ -69,8 +69,8 @@ type Transaction struct {
 	Amount              int       `json:"amount"`
 	Currency            string    `json:"currency"`
 	LastFour            string    `json:"last_four"`
-	BankReturnCode      string    `json:bank_return_code`
-	TransactionStatusID int       `json:transaction_status_id`
+	BankReturnCode      string    `json:"bank_return_code"`
+	TransactionStatusID int       `json:"transaction_status_id"`
 	CreatedAt           time.Time `json:"-"`
 	UpdatedAt           time.Time `json:"-"`
 }
@@ -92,10 +92,22 @@ func (m *DBModel) GetWidget(id int) (Widget, error) {
 
 	var widget Widget
 
-	query := `SELECT id, name FROM widgets WHERE id = ?`
+	query := `SELECT id, name, description, inventory_level, price,
+                     coalesce(image, ''),
+                     created_at, updated_at
+              FROM widgets WHERE id = ?;`
 
 	row := m.DB.QueryRowContext(ctx, query, id)
-	err := row.Scan(&widget.ID, &widget.Name)
+	err := row.Scan(
+		&widget.ID,
+		&widget.Name,
+		&widget.Description,
+		&widget.InventoryLevel,
+		&widget.Price,
+		&widget.Image,
+		&widget.CreatedAt,
+		&widget.UpdatedAt,
+	)
 	if err != nil {
 		return widget, err
 	}