Creating Models

A model represents the data which the application will use and takes care of the interaction to that data. In OPNsense most of the relevant data is physically stored in an XML structure (config.xml). The primary goal for OPNsense models is to structure the use of configuration data, by creating a clear abstraction layer.

In this chapter we will explain how models are designed and build.

• Designing the model
• Special model types
• Usage example
• Guidelines
• Custom (app specific) field types
• Adding constraints
• Migrations