models.py 文件源码

def store(self):
        if len(self.data) >= self.MAX_SIZE:
            raise TooBigMedia(self.identifying_name, self.MAX_SIZE)

        mime = magic.from_buffer(self.data, mime=True)
        if mime not in self.allowed_mimetypes:
            raise InvalidMimeType(mime)

        self.extension = mimetypes.guess_extension(mime)

        # weirdness from mimetypes
        if self.extension == '.jpe':
            self.extension = '.jpeg'

        checksum = hashlib.sha1(self.data).hexdigest()
        fn = '{}{}'.format(checksum, self.extension)

        img = Image(organization=self.organization)
        img.file.save(fn, ContentFile(self.data))
        return img.get_absolute_url()