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Multi-table inheritance

Django’s Multi-table inheritance (MTI) is a great feature to map Polymorphism. into a relational database.

Lino provides an intuitive user interface for managing MTI by adding some features:

• an MTI navigator lino.mixins.polymorphic

• Form Layouts can inherit from their MTI parent model’s layout.

• a special CheckBox widget (EnableChild) that allows to convert existing data records into a more specialized child model, or back into a less specialized parent model.

See also:

• https://gitlab.com/lino-framework/lino/blob/master/docs/tickets/22 gives an introduction to MTI

• lino.test_apps.mti.

• Multi-table inheritance (MTI)

• Is MTI a bad thing?