List groups when showing DFC Enterprise

engines/dfc_provider/app/controllers/dfc_provider/enterprises_controller.rb

@@ -7,6 +7,12 @@ module DfcProvider
 
     def show
       enterprise = EnterpriseBuilder.enterprise(current_enterprise)
+
+      group_ids = current_enterprise.groups.map do |group|
+        DfcProvider::Engine.routes.url_helpers.enterprise_group_url(group.id)
+      end
+      enterprise.registerSemanticProperty("dfc-b:affiliates") { group_ids }
+
       render json: DfcIo.export(
         enterprise,
         *enterprise.localizations,

engines/dfc_provider/spec/requests/enterprises_spec.rb

@@ -12,6 +12,13 @@ describe "Enterprises", type: :request, swagger_doc: "dfc.yaml", rswag_autodoc:
       address: build(:address, id: 40_000, address1: "42 Doveton Street"),
     )
   end
+  let!(:enterprise_group) do
+    create(
+      :enterprise_group,
+      id: 60_000, owner: user, name: "Local Farmers",
+      enterprises: [enterprise],
+    )
+  end
   let!(:product) {
     create(
       :base_product,
@@ -48,6 +55,10 @@ describe "Enterprises", type: :request, swagger_doc: "dfc.yaml", rswag_autodoc:
             expect(response.body).to include "123 456"
             expect(response.body).to include "Apple"
             expect(response.body).to include "42 Doveton Street"
+
+            expect(json_response["@graph"][0]).to include(
+              "dfc-b:affiliates" => "http://test.host/api/dfc/enterprise_groups/60000",
+            )
           end
         end
       end

swagger/dfc.yaml

@@ -313,6 +313,7 @@ paths:
                       dfc-b:VATnumber: 123 456
                       dfc-b:supplies: http://test.host/api/dfc/enterprises/10000/supplied_products/10001
                       dfc-b:manages: http://test.host/api/dfc/enterprises/10000/catalog_items/10001
+                      dfc-b:affiliates: http://test.host/api/dfc/enterprise_groups/60000
                     - "@id": http://test.host/api/dfc/addresses/40000
                       "@type": dfc-b:Address
                       dfc-b:hasStreet: 42 Doveton Street