python - 我可以在 Django 中以这种方式保存模型吗？

Question

first_obj = MyFirstModel()
second_obj = ImageModel()

first_obj.name = "newname"
first_obj.phonenr = "9898876"

second_obj.image = "new image"

first_obj.save()

first_obj.create(second_obj) #<------ can i do this?

这会保存第二个对象吗？有可能做到这一点吗？

Answer 1

我想你很困惑，试试这个：

class ImageModel(models.Model):
    image = models.ImageField()

class MyFirstModel(models.Model):
    name = ...
    image = models.ForeignKey(Image)


> image_model_instance = ImageModel()
> image_model_instance.save()
> first_model_instance = MyFirstModel(name="foo")
> first_model_instance.image = image_model_instance
> first_model_instance.save()

有一个create()函数，但它用于创建和保存模型的新实例：

first_model_instance = MyFirstModel.objects.create(Name="foo")

所以和：

first_model_instance = MyFirstModel()
first_model_instance.save()