Question

I have two models like this:

class A(models.Model):
    attachment = FileField(upload_to='a')

class B(models.Model):
    attachment = FileField(upload_to='b')

I have instance of A model:

a = A.objects.get(pk=1)

I need to create instance of B model, with file copied from a instance.

How can I do that?

I was trying something like this, but it is not working:

from django.core.files import File
B.objects.create(attachment=File(open(a.attachment.path, 'rb')))

Answer 1

It strange thing. Now the way I tryed before works perfectly, without any errors.
Maybe I missed something at the first time. So it works:

from django.core.files import File
B.objects.create(attachment=File(open(a.attachment.path, 'rb')))