我有一个Django模型标的,具有几个正常属性,它有一个标识图像场。 我想写出一种将这个物体复制到新物体的方法。 它很容易使新物体化,然后从旧到新(例如new_object.name = 旧的物体:)。 然而,如果在标识领域(即:new_object.logo = 旧_object.logo)下,新元和旧的元件都与硬盘上相同的文档相提。 如果你编辑旧的档案,新物体的标识将发生变化。
什么是全程/完整版图像现场的最佳途径? 我希望它有不同的档案名称,在磁盘上注明不同的档案,但其内容应当完全相同。
为什么不产生一种功能,而这种功能取决于什么是你想要什么地方来复制file<>>/strong>的信号,那么就会产生一个具有新形象的新物体?
models.py
class ObjectOne(models.Model):
logo = models.ImageField(...)
class ObjectTwo(models.Model):
logo = models.ImageField(...)
from django.db.models.signals import post_save
from signals import my_signal
post_save.connect(my_signal, dispatch_uid="001")
signals.py
from models. import ObjectOne, ObjectTwo
def my_signal(sender, instance, *args, **kwargs):
if sender is ObjectOne:
new_obj = ObjectTwo()
new_obj.logo.save("custom/path/new_filename.jpg",File(open(instance.image.url,"w"))
new_obj.save()
我没有测试图像复制法,但这是一般的想法。 这里还有:
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