From 6ef345c5d89a0fd9b3dc0cbb65ba432e2c997c0a Mon Sep 17 00:00:00 2001
From: Matt-Yorkley <9029026+Matt-Yorkley@users.noreply.github.com>
Date: Tue, 21 Apr 2020 10:45:57 +0200
Subject: [PATCH] Touch taxon when a taxon is applied to a product

---
 app/models/spree/classification_decorator.rb | 1 +
 spec/models/spree/taxon_spec.rb              | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/app/models/spree/classification_decorator.rb b/app/models/spree/classification_decorator.rb
index fec270bc14..20608bad94 100644
--- a/app/models/spree/classification_decorator.rb
+++ b/app/models/spree/classification_decorator.rb
@@ -1,5 +1,6 @@
 Spree::Classification.class_eval do
   belongs_to :product, class_name: "Spree::Product", touch: true
+  belongs_to :taxon, class_name: "Spree::Taxon", touch: true
 
   before_destroy :dont_destroy_if_primary_taxon
 
diff --git a/spec/models/spree/taxon_spec.rb b/spec/models/spree/taxon_spec.rb
index 5a565c5146..b19f979d99 100644
--- a/spec/models/spree/taxon_spec.rb
+++ b/spec/models/spree/taxon_spec.rb
@@ -28,5 +28,14 @@ module Spree
         expect(Taxon.distributed_taxons(:current)).to eq(e.id => Set.new([t1.id]))
       end
     end
+
+    describe "touches" do
+      let!(:taxon) { create(:taxon) }
+      let!(:product) { create(:simple_product) }
+
+      it "is touched when applied to a product" do
+        expect{ product.taxons << taxon }.to change { taxon.reload.updated_at }
+      end
+    end
   end
 end