Merge 1f5485f into ed482f0

lib/dynamoid/fields.rb

@@ -192,7 +192,8 @@ def set_created_at
     #
     # @since 0.2.0
     def set_updated_at
-      if self.class.timestamps_enabled? && !updated_at_changed?
+      # @_touch_record=false means explicit disabling
+      if self.class.timestamps_enabled? && !updated_at_changed? && @_touch_record != false
         self.updated_at = DateTime.now.in_time_zone(Time.zone)
       end
     end

lib/dynamoid/persistence.rb

@@ -289,9 +289,11 @@ def persisted?
     # Run the callbacks and then persist this object in the datastore.
     #
     # @since 0.2.0
-    def save(_options = {})
+    def save(options = {})
       self.class.create_table(sync: true)
 
+      @_touch_record = options[:touch]
+
       if new_record?
         run_callbacks(:create) do
           run_callbacks(:save) do

spec/dynamoid/persistence_spec.rb

@@ -1866,6 +1866,20 @@ def log_message
         end
       end
     end
+
+    context 'when `touch: false` option passed' do
+      it 'does not update updated_at attribute' do
+        obj = klass.create!
+        updated_at = obj.updated_at
+
+        travel 1.minute do
+          obj.name = 'foo'
+          obj.save(touch: false)
+        end
+
+        expect(obj.updated_at).to eq updated_at
+      end
+    end
   end
 
   describe '#update_attribute' do