django exists query

大数据

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参考资料

https://www.codegrepper.com/code-examples/python/django+exists+query

pass in queryset as filter django

users = UserClasses.objects.filter(class_id=data['class_id'])
user_details = User.objects.filter(id__in=users.values_list('id', flat=True))

django queryset exists

if some_queryset.exists():
    print("There is at least one object in some_queryset")

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