refactor: q ordered article parameter

spec/support/api_helper.rb

@@ -70,5 +70,11 @@ module ApiHelper
     def self.id_url_param
       parameter name: :id, in: :path, type: :integer, required: true
     end
+
+    def self.q_ordered_url_param
+      parameter name: 'q', in: :query, required: false,
+                description: "'member' show articles ordered by the user's ordergroup, 'all' by all members, and 'supplier' ordered at the supplier",
+                schema: { '$ref' => '#/components/schemas/q_ordered' }
+    end
   end
 end