Added Spree::Tracker validation on active field - only one active tra…

…cker per store permitted

app/models/spree/tracker.rb

@@ -7,6 +7,7 @@ class Tracker < Spree::Base
 
     validates :analytics_id, presence: true, uniqueness: { scope: [:engine, :store_id], case_sensitive: false }
     validates :store, presence: true
+    validate :ensure_one_active_tracker_assigned_to_store, if: -> { (new_record? || active_changed?) && active? }
 
     scope :active, -> { where(active: true) }
 
@@ -27,5 +28,22 @@ def clear_cache
         Rails.cache.delete("current_tracker/#{engine}/#{store_id}")
       end
     end
+
+    private
+
+    def ensure_one_active_tracker_assigned_to_store
+      if store_has_other_active_trackers?
+        errors.add(
+          :active,
+          I18n.t('activemodel.errors.models.spree/tracker.attributes.active.store_has_already_assigned_tracker',
+            store_name: store.name
+          )
+        )
+      end
+    end
+
+    def store_has_other_active_trackers?
+      Spree::Tracker.active.where.not(id: id).where(store_id: store_id).exists?
+    end
   end
 end

config/locales/en.yml

@@ -1,4 +1,11 @@
 en:
+  activemodel:
+    errors:
+      models:
+        spree/tracker:
+          attributes:
+            active:
+              store_has_already_assigned_tracker: "%{store_name} has already assigned an active tracker - please choose a different store or deactivate the other tracker"
   activerecord:
     attributes:
       spree/tracker:

spec/features/admin/configuration/analytics_tracker_spec.rb

@@ -6,7 +6,7 @@
   let!(:default_store) { Spree::Store.default }
   let!(:another_store) { create(:store, name: 'Eurozone') }
 
-  context 'index' do
+  context '#index' do
     before(:each) do
       create(:tracker, store: default_store)
       create(:tracker, analytics_id: 'A200', store: another_store)
@@ -34,27 +34,78 @@
     end
   end
 
-  context 'create' do
-    before(:each) do
-      visit spree.admin_trackers_path
+  context '#update' do
+    let!(:tracker) { create(:tracker, store: default_store, active: false) }
+
+    context 'with no other active tracker already assigned to store' do
+      it 'should be able to toggle the analytics tracker to active', js: true do
+        visit spree.edit_admin_tracker_path(tracker)
+
+        choose 'tracker_active_true'
+        click_button 'Update'
+
+        expect(page).to have_content('successfully updated!')
+        within_row(1) do
+          expect(column_text(1)).to eq('A100')
+          expect(column_text(2)).to eq('Google analytics')
+          expect(column_text(3)).to eq(default_store.name)
+          expect(column_text(4)).to eq('Yes')
+        end
+      end
     end
 
-    it 'should be able to create a new analytics tracker', js: true do
-      within('.content-header') do
-        click_link 'admin_new_tracker_link'
+    context 'with some other active tracker already assigned to store' do
+      before do
+        create(:tracker, store: default_store, analytics_id: 'A200')
       end
-      fill_in 'tracker_analytics_id', with: 'A100'
 
-      select2 default_store.name, from: 'Store'
+      it 'should not be able to toggle the analytics tracker to active', js: true do
+        visit spree.edit_admin_tracker_path(tracker)
 
-      click_button 'Create'
+        choose 'tracker_active_true'
+        click_button 'Update'
 
-      expect(page).to have_content('successfully created!')
-      within_row(1) do
-        expect(column_text(1)).to eq('A100')
-        expect(column_text(2)).to eq('Google analytics')
-        expect(column_text(3)).to eq(default_store.name)
-        expect(column_text(4)).to eq('Yes')
+        expect(page).to have_content "#{default_store.name} has already assigned an active tracker"
+      end
+    end
+  end
+
+  context '#create' do
+    context 'with no other active tracker already assigned to store' do
+      it 'should be able to create a new active analytics tracker', js: true do
+        visit spree.admin_trackers_path
+
+        within('.content-header') { click_link 'admin_new_tracker_link' }
+        fill_in 'tracker_analytics_id', with: 'A100'
+        select2 default_store.name, from: 'Store'
+
+        click_button 'Create'
+
+        expect(page).to have_content('successfully created!')
+        within_row(1) do
+          expect(column_text(1)).to eq('A100')
+          expect(column_text(2)).to eq('Google analytics')
+          expect(column_text(3)).to eq(default_store.name)
+          expect(column_text(4)).to eq('Yes')
+        end
+      end
+    end
+
+    context 'with some other active tracker already assigned to store' do
+      before do
+        create(:tracker, store: default_store)
+      end
+
+      it 'should not be able to create a new active analytics tracker', js: true do
+        visit spree.admin_trackers_path
+
+        within('.content-header') { click_link 'admin_new_tracker_link' }
+        fill_in 'tracker_analytics_id', with: 'A200'
+        select2 default_store.name, from: 'Store'
+
+        click_button 'Create'
+
+        expect(page).to have_content "#{default_store.name} has already assigned an active tracker"
       end
     end
   end