The Fiona 7 gem can be operated in two modes,
standalone. If you wish to migrate an existing Rails Connector or Fiona Connector application to Fiona 7, the
legacy mode should be used, as it offers the highest compatibility with Fiona. This mode may also be useful with new Rails applications intended to be attached to an existing Fiona instance.
standalone mode has been designed for new Rails applications operating on an initially empty instance. This mode offers the best possible compatibility with Scrivito, causing the development of the application to follow almost the same patterns as with a Scrivito application.
Depending on the mode used,
standalone, specific features of Fiona 7 are either directly supported or not. The Rails application needs to consider and handle these differences accordingly.