Question

I have a this model…

class MyModel(models.Model):
    ...
    file = models.FileField(upload_to='files/',null=True, blank=True)
    ...

when i upload a file, example file name is docfile.doc. when i change the file or i rewrite it and upload again docfile.doc the file will become docfile_1.doc and the old docfile.doc is still exist.

i am doing the uploading and saving data in django-admin

my question is, how can i remove the old docfile.doc if i upload the new docfile.doc and the file name is still docfile.doc?

can anyone help me in my case? thanks in advance

i try this one :

def content_file_name(instance, filename):
    print instance
    print filename
    file = os.path.exists(filename)
    print file
    if file:
        os.remove(filename)
    return "file/"+str(filename)

 class MyModel(models.Model):
        ...
        file = models.FileField(upload_to=content_file_name,null=True, blank=True)
        ...

but nothing happend, when i upload docfile.doc again, it will become docfile_1.doc and the old docfile.doc still exist.

Answer 1

i got it… i use this

def content_file_name(instance, filename):
    print instance
    print filename
    file = os.path.exists("media/file/"+str(filename))
    print file
    if file:
        os.remove("media/file/"+str(filename))
    return "file/"+str(filename)