1 files changed, 29 insertions, 0 deletions
diff --git a/lib/api/helpers/presentable.rb b/lib/api/helpers/presentable.rb
new file mode 100644
index 00000000000..973c2132efe
--- /dev/null
+++ b/lib/api/helpers/presentable.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+module API
+  module Helpers
+    ##
+    # This module makes it possible to use `app/presenters` with
+    # Grape Entities. It instantiates model presenter and passes
+    # options defined in the API endpoint to the presenter itself.
+    #
+    #   present object, with: Entities::Something,
+    #                   current_user: current_user,
+    #                   another_option: 'my options'
+    #
+    # Example above will make `current_user` and `another_option`
+    # values available in the subclass of `Gitlab::View::Presenter`
+    # thorough a separate method in the presenter.
+    #
+    # The model class needs to have `::Presentable` module mixed in
+    # if you want to use `API::Helpers::Presentable`.
+    #
+    module Presentable
+      extend ActiveSupport::Concern
+
+      def initialize(object, options = {})
+        super(object.present(options), options)
+      end
+    end
+  end
+end