How to upload files onto arbitrary directories in Django?

Question

I'm developing a file manager with Django. I'm using SFTP file server and django-storage package for managing files.

Well I developed some Apis for users to create and modify directories under their-own root-directory (which is abstract to the users) so far. Now I want to able users to upload their files onto their sub-directories or move files between those sub-directories but I don't know how?!

This is the model I'm using for file management:

def user_directory_path(instance, filename):
    return 'user_{0}/{1}'.format(format(instance.owner.id, '010d'), filename)

class UploadedFile(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    name = models.CharField(max_length=150)
    owner = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    file = models.FileField(upload_to=user_directory_path)

As you can see, currently files will be uploaded to <server-root>/user_<10digit-userid>/ directory.

Thanks in advance.

Answer 1

In the last I added an extra CharField to my model named upload_to and I used it in user_directory_path function to indicate sub-directory of the file.

def user_directory_path(instance, filename):
    if instance.upload_to != '' and instance.upload_to[-1] != '/':
        upload_to = instance.upload_to + '/'
    else:
        upload_to = instance.upload_to
    return 'user_{0}/{1}{2}'.format(format(instance.owner.id, '010d'), upload_to, filename)

class UploadedFile(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    name = models.CharField(max_length=150)
    owner = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    file = models.FileField(upload_to=user_directory_path)
    upload_to = models.CharField(max_length=255, default='')