doc (examples) refactor shopping-cart example

Author: vengrov

examples/models/shopping-cart.js

@@ -0,0 +1,71 @@
+/* global Backendless */
+
+'use strict';
+
+class ShoppingCart {
+  constructor(opts) {
+    opts = opts || {};
+
+    this.name = opts.name;
+    this.items = opts.items || [];
+    this.___class = ShoppingCart.name;
+  }
+
+  addItem(item) {
+    item.objectId = null;
+
+    this.items.push(item);
+  }
+
+  deleteItem(product) {
+    const idx = this.items.findIndex(item => item.product === product);
+
+    if (idx === -1) {
+      throw new Error(`No ${product} in cart`);
+    }
+
+    this.items.splice(idx, 1);
+
+    return this;
+  }
+
+  setQuantity(product, quantity) {
+    const productItem = this.items.find(item => item.product === product);
+
+    if (!productItem) {
+      throw new Error(`No [${product}] in cart`);
+    }
+
+    productItem.quantity = quantity;
+
+    return this;
+  }
+
+  getItems() {
+    return this.items;
+  }
+
+  destroy() {
+    return Backendless.Cache.remove(this.name, this);
+  }
+
+  save() {
+    return Backendless.Cache.put(this.name, this);
+  }
+
+  static get(name, mustExist) {
+    Backendless.Cache.setObjectFactory(ShoppingCart.name, ShoppingCart);
+
+    return Backendless.Cache.get(name).then(cart => {
+      if (!cart && mustExist) {
+        throw new Error(`Shopping cart [${name}] does not exist`);
+      }
+
+      return cart;
+    });
+  }
+}
+
+Backendless.enablePromises();
+
+module.exports = ShoppingCart;

examples/services/shopping-cart.js

@@ -2,71 +2,8 @@
 
 'use strict';
 
-const Order = require('../models/order');
-
-class ShoppingCart {
-  constructor(opts) {
-    opts = opts || {};
-
-    this.name = opts.name;
-    this.items = opts.items || [];
-    this.___class = ShoppingCart.name;
-  }
-
-  addItem(item) {
-    item.objectId = null;
-
-    this.items.push(item);
-  }
-
-  deleteItem(product) {
-    const idx = this.items.findIndex(item => item.product === product);
-
-    if (idx === -1) {
-      throw new Error(`No ${product} in cart`);
-    }
-
-    this.items.splice(idx, 1);
-
-    return this;
-  }
-
-  setQuantity(product, quantity) {
-    const productItem = this.items.find(item => item.product === product);
-
-    if (!productItem) {
-      throw new Error(`No [${product}] in cart`);
-    }
-
-    productItem.quantity = quantity;
-
-    return this;
-  }
-
-  getItems() {
-    return this.items;
-  }
-
-  destroy() {
-    Backendless.Cache.remove(this.name, this);
-  }
-
-  save() {
-    Backendless.Cache.put(this.name, this);
-  }
-
-  static get(name, mustExist) {
-    Backendless.Cache.setObjectFactory(ShoppingCart.name, ShoppingCart);
-
-    return Backendless.Cache.get(name).then(cart => {
-      if (!cart && mustExist) {
-        throw new Error(`Shopping cart [${name}] does not exist`);
-      }
-
-      return cart;
-    });
-  }
-}
+const Order        = require('../models/order'),
+      ShoppingCart = require('../models/shopping-cart');
 
 class ShoppingCartService {