Django模型中的if語句如何設置字段？

Question

我在模型中有一個字段，True/False 值會受到其他字段的影響。 我可以知道如何設置嗎？

模型.py：

class Product(models.Model):
  storage_amount = models.PositiveIntegerField()
  if storage_amount == 0 or None:
    out_of_storage_or_not = models.BooleanField(default=True)
  else:
    out_of_storage_or_not = models.BooleanField(default=False)

Answer 1

  class Product(models.Model):
    storage_amount = models.PositiveIntegerField()
    out_of_storage_or_not = models.BooleanField(default=False)

    def save(self,*args, **kwargs):
      if self.storage_amount==0 or None:
        self.out_of_storage_or_not=True
      super().save(*args, **kwargs)

Answer 2

嘗試這個

class Product(models.Model):
    storage_amount = models.PositiveIntegerField()
    out_of_storage_or_not = models.BooleanField(default=False)

    def save(self, *args, **kwargs):
        self.out_of_storage_or_not = False if self.storage_amount else True
        super().save(*args, **kwargs)