models.py 文件源码

def generate_image_set(self, force: bool=False) -> None:

        if not os.path.isfile(self.zipped.path):
            return
        image_set_present = bool(self.image_set.all())
        # large thumbnail and image set
        if not image_set_present or force:
            try:
                my_zip = zipfile.ZipFile(
                    self.zipped.path, 'r')
            except (zipfile.BadZipFile, NotImplementedError):
                return
            if my_zip.testzip():
                my_zip.close()
                return
            filtered_files = list(filter(discard_zipfile_contents, sorted(my_zip.namelist(), key=zfill_to_three)))

            for img in self.image_set.all():
                if img.extracted:
                    img.image.delete(save=False)
                    img.thumbnail.delete(save=False)
                img.delete()
            for count, filename in enumerate(filtered_files, start=1):
                image = Image(archive=self, archive_position=count, position=count)
                image.image = None
                image.save()

            my_zip.close()