Question

我意识到如果我通过filter().delete()删除项目，模型上的object_set不会更新（这没关系）但是我想在删除后更新_set以便通过：

def test_prefetch(self):
    game = Game.objects.prefetch_related('bubble_set').get()
    game.fill_board()
    self.assertEqual(game.bubble_set.count(), game.width * game.height)
    game.bubble_set.filter(x=5).delete()
    # Fails
    self.assertNotEqual(game.bubble_set.count(), game.width * game.height)
    game = Game.objects.prefetch_related('bubble_set').get()

Answer 1

您需要重新获取该对象。因此可以在game = Game.objects.prefetch_related('bubble_set').get()之后.delete()进行。{/ p>

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1 个答案: