回形针:无法附加XLS(但DOC工作)

我无法附加XLS文件,但DOC工作:

附件文件内容类型无效
附件文件无效

这是日志:

Parameters: ... "files"=>[#<ActionDispatch::Http::UploadedFile:0x0000000daf7730 @tempfile=#, @original_filename="Chocolate_Store1.xls", @content_type="application/vnd.ms-excel", @headers="Content-Disposition: form-data; name=\"deal[files][]\"; filename=\"Chocolate_Store1.xls\"\r\nContent-Type: application/vnd.ms-excel\r\n">], ... Command :: file -b --mime "C:/Users/Chloe/AppData/Local/Temp/1f1fb4d71efc0bd245abd7b5b9aa661220170511-47156-1rqzd0q.xls" (1.0ms) ROLLBACK Rendering deals/edit.html.erb within layouts/application 

当我测试类型时:

 >file -b --mime "C:/Users/Chloe/AppData/Local/Temp/1f1fb4d71efc0bd245abd7b5b9aa661220170511-47156-1rqzd0q.xls" application/vnd.ms-office; charset=binary 

我在接受列表中有这种类型:

 class Attachment < ApplicationRecord has_attached_file :file validates_attachment_content_type :file, content_type: [ "application/pdf", "application/msword", "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "application/vnd.oasis.opendocument.text", "application/vnd.ms-excel", "application/vnd.ms-office", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "application/vnd.oasis.opendocument.spreadsheet" ] end 

Rails 5.0.2,Paperclip 5.1.0,文件5.04(DevKit)


我注意到DevKit file与Cygwin file不同。 不确定是否相关:

 >file -b --mime "C:/Users/Chloe/AppData/Local/Temp/1f1fb4d71efc0bd245abd7b5b9aa661220170515-54920-1e2bk5s.xls" application/vnd.ms-office; charset=binary $ file -b --mime "C:/Users/Chloe/AppData/Local/Temp/1f1fb4d71efc0bd245abd7b5b9aa661220170515-54920-1e2bk5s.xls" application/vnd.ms-excel; charset=binary 

我改用了

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