[SD-944] Adds 'remove from cart' event for GA

app/assets/javascripts/spree/frontend/remove_from_cart_analytics.js

@@ -0,0 +1,34 @@
+//= require spree/frontend
+
+function gaRemoveFromCart(variant) {
+  clearGAplugins();
+  gtag(
+    'event',
+    'remove_from_cart',
+    {
+      items: [{
+        id: variant.sku,
+        name: variant.name,
+        price: variant.price,
+        variant: variant.options,
+        quantity: variant.quantity
+      }]
+    }
+  );
+}
+
+Spree.ready(function(){
+  $('body').on('product_remove_from_cart', function(event) {
+    var variant = {
+      sku: event.variant_sku,
+      name: event.variant_name,
+      price: event.variant_price,
+      options: event.variant_options,
+      quantity: event.variant_quantity
+    }
+
+    if (typeof gtag !== 'undefined') {
+      gaRemoveFromCart(variant)
+    }
+  })
+})

lib/generators/spree_analytics_trackers/install/install_generator.rb

@@ -8,6 +8,7 @@ def add_javascripts
         return unless File.file?(javascripts_path)
 
         append_file 'vendor/assets/javascripts/spree/frontend/all.js', "//= require spree/frontend/add_to_cart_analytics\n"
+        append_file 'vendor/assets/javascripts/spree/frontend/all.js', "//= require spree/frontend/remove_from_cart_analytics\n"
       end
 
       def add_migrations