1 files changed, 25 insertions, 0 deletions
diff --git a/app/services/boards/lists/destroy_service.rb b/app/services/boards/lists/destroy_service.rb
new file mode 100644
index 00000000000..25da3bfb56d
--- /dev/null
+++ b/app/services/boards/lists/destroy_service.rb
@@ -0,0 +1,25 @@
+module Boards
+  module Lists
+    class DestroyService < Boards::BaseService
+      def execute(list)
+        return false unless list.destroyable?
+
+        list.with_lock do
+          decrement_higher_lists(list)
+          remove_list(list)
+        end
+      end
+
+      private
+
+      def decrement_higher_lists(list)
+        board.lists.movable.where('position > ?',  list.position)
+                   .update_all('position = position - 1')
+      end
+
+      def remove_list(list)
+        list.destroy
+      end
+    end
+  end
+end