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The most efficient way to get user with userprofile in Django

In Django, in the recommended configuration, the UserProfile instance is associated with OneToOneField with the User instance.

class UserProfile(models.Model):
    user = models.OneToOneField(User)
    data = ...

What is the most effective way to view both user and profile views? Is it possible to make a select_related () query on an inner join to get both objects with a single database hit? Or does it always boil down to two separate challenges? Perhaps Django auth middleware retrieves a user instance before invoking the view ... does anyone know?

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A user profile can be obtained using get_profile().

. : https://docs.djangoproject.com/en/dev/topics/auth/#storing-additional-information-about-users

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