class Book(models.Model):
    title = models.CharField(max_length=200)

class Page(ImageModel):
    book = models.ForeignKey(Book)
    image = models.ImageField(upload_to='book_photos')
    num_views = models.PositiveIntegerField(editable=False, default=0)

    class IKOptions:
        # This inner class to define the ImageKit options for the model
        spec_module = 'books.image_specs'
        cache_dir = 'book_photos'
        image_field = 'image'
        save_count_as = 'num_views'