What is the reason behind Django Serializer automatically allowing the addition of "_id" suffix to a ForeignKey field?

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The reason behind Django Serializer automatically allowing the addition of "id" suffix to a ForeignKey field is to provide a convenient way to work with foreign keys in serialized data. When serializing data, the "id" suffix can be added to the foreign key field to represent the actual ID value of the related object. This simplifies the serialization process and makes it easier to work with related objects in the serialized data. Additionally, it also helps to improve the performance of the application by reducing the amount of data that needs to be serialized.