小编Jes*_*ggs的帖子

有文件@attachment.从调试:

"datafile"=>#<ActionDispatch::Http::UploadedFile:0x3eee9c0        @original_filename="filename.jpg",
 @content_type="image/jpeg",
 @headers="Content-Disposition: form-data; name=\"datafile\";   filename=\"filename.jpg\"\r\nContent-Type: image/jpeg\r\n",
 @tempfile=#<File:C:/Users/.../RackMultipart20121026-2452-g369hf>>,

它是通过用户表单上传的.

我正在尝试将其附加到电子邮件中:

...
attachments[@attachment.original_filename] = @attachment
mail(:to => "email@email.com", :subject => "test", :from => @fromaddress)

哪个错误:

#的未定义方法`length'

我也试过了

attachments[@attachment.original_filename] = @attachment.tempfile

哪个错误:

undefined method `[]' for #<Tempfile:0x5629e48>

@attachment.original_filename 返回正确的文件名(示例中为"filename.jpg")

有什么明显的吗？