rails paperclip content_type 设置以及遇到的问题

问题：

Paperclip xlsx 能通过content type 验证，但xls 不行。

代码如下：

validates_attachment_content_type :file, :content_type => [
                                           "application/pdf", 
                                           "image/jpeg", 
                                           "image/jpg",
                                           "application/vnd.ms-excel", 
                                           "application/msword", 
                                           "application/octet-stream",
                                           "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", 
                                           "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
                                           ]

修改如下，在上面代码中加入application/x-ole-storage  即可

...content_type: [...'application/x-ole-storage'...]　

另外可以使用验证后缀的方法：

validates_attachment_file_name :file, matches: [/.pdf$/, /.docx?$/, /.xlsx?$/, /.odt$/, /.ods$/]

rails paper clip农田validating content type application/octet-stream

validates_attachment_content_type :media,
      content_type: [
        'image/jpg',
        'image/jpeg',
        'image/pjpeg',
        'image/png',
        'image/x-png',
        'video/avi',
        'video/mov',
        'video/mp4',
        'video/x-flv',
        'video/3gpp',
        'video/quicktime',
        'video/x-msvideo',
        'video/x-ms-wmv',
        'flv-application/octet-stream',
        'application/octet-stream',
        'video/x-flv',
        'video/mpeg',
        'video/mpeg4',
        'video/x-la-asf',
        'video/x-ms-asf'
      ],
        :message => 'file type is not allowed'

参考链接：https://www.py4u.net/discuss/1238188

https://www.py4u.net/discuss/1236086