frontend/templates: fix money rendering

Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>

src/frontend/handlers.go

@@ -17,7 +17,10 @@ import (
 )
 
 var (
-	templates = template.Must(template.ParseGlob("templates/*.html"))
+	templates = template.Must(template.New("").
+		Funcs(template.FuncMap{
+			"renderMoney": renderMoney,
+		}).ParseGlob("templates/*.html"))
 )
 
 func ensureSessionID(next http.HandlerFunc) http.HandlerFunc {
@@ -282,3 +285,7 @@ func cartIDs(c []*pb.CartItem) []string {
 	}
 	return out
 }
+
+func renderMoney(money pb.Money) string {
+	return fmt.Sprintf("%s %d.%02d", money.GetCurrencyCode(), money.GetUnits(), money.GetNanos()/10000000)
+}

src/frontend/templates/cart.html

@@ -26,9 +26,7 @@
                     <div class="col text-left">
                         Qty: {{.Quantity}}<br/>
                         <strong>
-                            {{.Price.CurrencyCode}}
-                            {{.Price.Amount.Decimal}}.
-                            {{- .Price.Amount.Fractional}}{{- if lt .Price.Amount.Fractional 10}}0{{end}}
+                            {{ renderMoney .Price}}
                         </strong>
                     </div>
                 </div>

src/frontend/templates/home.html

@@ -38,10 +38,8 @@
                                     </a>
                                 </div>
                                 <small class="text-muted">
-                                    {{.Price.CurrencyCode}}
-                                    <strong>{{.Price.Amount.Decimal}}.{{.Price.Amount.Fractional}}
-                                        {{- if lt .Price.Amount.Fractional 10}}0{{end}}
-                                    </strong>
+                                    {{ renderMoney .Price }} 
+                                </strong>
                                 </small>
                             </div>
                         </div>

src/frontend/templates/product.html

@@ -13,9 +13,7 @@
                             <h2>{{$.product.Item.Name}}</h2>
                             
                             <p class="text-muted">
-                                {{$.product.Price.CurrencyCode}}
-                                {{$.product.Price.Amount.Decimal}}.
-                                {{- $.product.Price.Amount.Fractional}}{{- if lt $.product.Price.Amount.Fractional 10}}0{{end}}
+                                {{ renderMoney $.product.Price}}
                             </p>
                             <hr/>
                             <p>