Support product-level custom dimensions and metrics and update tests.

Author: brennan

lib/index.js

@@ -683,7 +683,7 @@ GA.prototype.checkoutStepViewedEnhanced = function(track) {
 
   each(products, function(product) {
     var productTrack = createProductTrack(track, product);
-    enhancedEcommerceTrackProduct(productTrack, self._trackerName);
+    enhancedEcommerceTrackProduct(productTrack, self._trackerName, opts);
   });
   window.ga(self._trackerName + 'ec:setAction', 'checkout', {
     step: props.step || 1,
@@ -744,7 +744,7 @@ GA.prototype.orderCompletedEnhanced = function(track) {
 
   each(products, function(product) {
     var productTrack = createProductTrack(track, product);
-    enhancedEcommerceTrackProduct(productTrack, self._trackerName);
+    enhancedEcommerceTrackProduct(productTrack, self._trackerName, opts);
   });
 
   window.ga(self._trackerName + 'ec:setAction', 'purchase', {
@@ -809,7 +809,7 @@ GA.prototype.productAddedEnhanced = function(track) {
   var opts = this.options;
 
   this.loadEnhancedEcommerce(track);
-  enhancedEcommerceProductAction(track, 'add', null, self._trackerName);
+  enhancedEcommerceProductAction(track, 'add', null, self._trackerName, opts);
   this.pushEnhancedEcommerce(track, opts, self._trackerName);
 };
 
@@ -827,7 +827,7 @@ GA.prototype.productRemovedEnhanced = function(track) {
   var opts = this.options;
 
   this.loadEnhancedEcommerce(track);
-  enhancedEcommerceProductAction(track, 'remove', null, self._trackerName);
+  enhancedEcommerceProductAction(track, 'remove', null, self._trackerName, opts);
   this.pushEnhancedEcommerce(track, opts, self._trackerName);
 };
 
@@ -849,7 +849,7 @@ GA.prototype.productViewedEnhanced = function(track) {
   this.loadEnhancedEcommerce(track);
   // list property is optional
   if (props.list) data.list = props.list;
-  enhancedEcommerceProductAction(track, 'detail', data, self._trackerName);
+  enhancedEcommerceProductAction(track, 'detail', data, self._trackerName, opts);
   this.pushEnhancedEcommerce(track, opts, self._trackerName);
 };
 
@@ -871,7 +871,7 @@ GA.prototype.productClickedEnhanced = function(track) {
   this.loadEnhancedEcommerce(track);
   // list property is optional
   if (props.list) data.list = props.list;
-  enhancedEcommerceProductAction(track, 'click', data, self._trackerName);
+  enhancedEcommerceProductAction(track, 'click', data, self._trackerName, opts);
   this.pushEnhancedEcommerce(track, opts, self._trackerName);
 };
 
@@ -1017,7 +1017,7 @@ GA.prototype.productListFilteredEnhanced = function(track) {
  * @param {Track} track
  */
 
-function enhancedEcommerceTrackProduct(track, trackerName) {
+function enhancedEcommerceTrackProduct(track, trackerName, opts) {
   var props = track.properties();
   var product = {
     id: track.productId() || track.id() || track.sku(),
@@ -1034,6 +1034,8 @@ function enhancedEcommerceTrackProduct(track, trackerName) {
   // https://developers.google.com/analytics/devguides/collection/analyticsjs/enhanced-ecommerce#measuring-transactions
   var coupon = track.proxy('properties.coupon');
   if (coupon) product.coupon = coupon;
+
+  product = extend(product, metrics(props, opts));
   window.ga(trackerName + 'ec:addProduct', product);
 }
 
@@ -1046,8 +1048,8 @@ function enhancedEcommerceTrackProduct(track, trackerName) {
  * @param {Object} data
  */
 
-function enhancedEcommerceProductAction(track, action, data, trackerName) {
-  enhancedEcommerceTrackProduct(track, trackerName);
+function enhancedEcommerceProductAction(track, action, data, trackerName, opts) {
+  enhancedEcommerceTrackProduct(track, trackerName, opts);
   window.ga(trackerName + 'ec:setAction', action, data || {});
 }