1 files changed, 22 insertions, 0 deletions
diff --git a/app/services/boards/lists/create_service.rb b/app/services/boards/lists/create_service.rb
new file mode 100644
index 00000000000..5cb408b9d20
--- /dev/null
+++ b/app/services/boards/lists/create_service.rb
@@ -0,0 +1,22 @@
+module Boards
+  module Lists
+    class CreateService < Boards::BaseService
+      def execute
+        List.transaction do
+          create_list_at(next_position)
+        end
+      end
+
+      private
+
+      def next_position
+        max_position = board.lists.movable.maximum(:position)
+        max_position.nil? ? 0 : max_position.succ
+      end
+
+      def create_list_at(position)
+        board.lists.create(params.merge(list_type: :label, position: position))
+      end
+    end
+  end
+end