Rename user to contributor in submission

app/models/concerns/contributor_creation.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module ContributorCreation
+  extend ActiveSupport::Concern
+  include Contributor
+
+  included do
+    belongs_to :contributor, polymorphic: true
+    alias_method :user, :contributor
+    alias_method :user=, :contributor=
+    alias_method :author, :user
+    alias_method :creator, :user
+  end
+end