1 files changed, 15 insertions, 0 deletions
diff --git a/lib/api/entities/namespace.rb b/lib/api/entities/namespace.rb
new file mode 100644
index 00000000000..b21dd29c7b4
--- /dev/null
+++ b/lib/api/entities/namespace.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+module API
+  module Entities
+    class Namespace < Entities::NamespaceBasic
+      expose :members_count_with_descendants, if: -> (namespace, opts) { expose_members_count_with_descendants?(namespace, opts) } do |namespace, _|
+        namespace.users_with_descendants.count
+      end
+
+      def expose_members_count_with_descendants?(namespace, opts)
+        namespace.kind == 'group' && Ability.allowed?(opts[:current_user], :admin_group, namespace)
+      end
+    end
+  end
+end