Django - 下载图像时出错

Question

我正在开发一个下载图像的功能。

但我正在解决此错误

coercing to Unicode: need string or buffer, ImageFieldFile found

代码：

def download_image(request, image_id):
    img = Base.objects.get(base_id=image_id)
    wrapper      = FileWrapper(open(img.file))  # img.file returns full path to the image
    content_type = mimetypes.guess_type(filename)[0]  # Use mimetypes to get file type
    response     = HttpResponse(wrapper,content_type=content_type)  
    response['Content-Length']      = os.path.getsize(img.file)    
    response['Content-Disposition'] = "attachment; filename=%s" %  img.name
    return response

Answer 1

img.file是ImageFieldFile个对象，open()需要一个字符串。您需要open(img.file.name)来获取实际的文件路径。