Created
March 26, 2010 22:50
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| import os, uuid | |
| from django.conf import settings | |
| from django.db import models | |
| from django.utils.encoding import smart_unicode, smart_str | |
| class BannerFileField(models.FileField): | |
| def pre_save(self, model_instance, add): | |
| file = super(BannerFileField, self).pre_save(model_instance, add) | |
| if not add: | |
| old = model_instance.__class__.objects.get(pk=model_instance.pk) | |
| try: | |
| os.remove(getattr(old, self.name).path) | |
| except OSError: | |
| pass | |
| f_ext = file.name.split('.')[-1] | |
| while True: | |
| name = uuid.uuid1() | |
| f_name = name + u'.' + f_ext | |
| f_new = smart_unicode(os.path.join(settings.MEDIA_ROOT, self.upload_to, f_name) | |
| if not os.path.exists(f_new): | |
| break | |
| os.rename(file.path, f_new) | |
| upload_to = self.upload_to | |
| if not upload_to.endswith(u'/'): upload_to = upload_to + u'/' | |
| file.name = self.upload_to + u'/' + f_name | |
| return file |
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