Django Design Patterns and Best Practices - Second Edition

Solution details

Abstract inheritance is an elegant solution which uses special Abstract base classes to share data and behavior among models. When you define an abstract base class in Django, which are not the same as abstract base classes (ABCs) in Python, it does not create any corresponding table in the database. Instead, these fields are created in the derived non-abstract classes.

Accessing abstract base class fields doesn't need a JOIN statement. The resulting tables are also self-contained with managed fields. Due to these advantages, most Django projects use abstract base classes to implement common fields or methods.

Limitations of abstract models are as follows:

• They cannot have a Foreign key or many-to-many field from another ...