[Django]-Django absract vs non-abstract model inheritance

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4👍

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You might consider generic relations here.

class Annotation(models.Model):
    body = models.TextField()
    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
    object_id = models.PositiveIntegerField()
    annotated_object = GenericForeignKey('content_type', 'object_id')

class Book(models.Model):
    ...
    annotations = GenericRelation('Annotation')

class Article(models.Model):
    ...
    annotations = GenericRelation('Annotation')

now you can set annotation.annotated_object to any book or article instance, and in reverse do obj.annotations from both book and article objects.

👤Daniel Roseman

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