update fastfood,

03_source/mobile/src/pages/DemoFastFoodApp/data/CartStore.js

@@ -0,0 +1,17 @@
+import { Store } from "pullstate";
+
+export const CartStore = new Store({
+    
+    total: 0,
+    product_ids: []
+});
+
+export const addToCart = (categorySlug, productID) => {
+
+    CartStore.update(s => { s.product_ids = [ ...s.product_ids, `${ categorySlug }/${ parseInt(productID) }` ]; });
+}
+
+export const removeFromCart = productIndex => {
+
+    CartStore.update(s => { s.product_ids.splice(productIndex, 1) });
+}