views.py 文件源码

def _postsave(self, validated_data, instance):
        for field, value in validated_data.items():
            # Optimize images with TinyPNG
            if type(self.Meta.model._meta.get_field(field)) == models.models.ImageField:
                value = getattr(instance, field)
                filename = value.name
                content = value.read()
                if not content:
                    setattr(instance, field, None)
                    continue
                image = shrinkImageFromData(content, filename, settings=getattr(self.Meta.model, 'tinypng_settings', {}).get(field, {}))
                image.name = self.Meta.model._meta.get_field(field).upload_to(instance, filename)
                setattr(instance, field, image)
        return instance