ruby-on-rails - 无法上传类型为 application/* 的回形针中的不同文件

Question

我正在使用带有 ruby​​ 2.4 的 rails 5

gem "paperclip", "~> 5.0.0"

我上传的文件的内容类型是 @content_type="application/octet-stream"（这是来自终端），所以我在模型中提到了这个内容类型：

class CompletedJob < ApplicationRecord
  # validates :name, presence: true # Make sure the owner's name is present.
  has_attached_file :file
  validates_attachment :file,
                       :content_type => {content_type: [ "application/octet-stream", 'text/plain', 'text/csv', 'application/vnd.ms-excel']}, message: "is not in CSV format",
                       :size => {in: 0..400.megabytes}
  belongs_to :job
end

但错误仍然保持不变：

由于扩展名不正确，文件未上传

你能指导我哪里出了问题吗？提前致谢

终端输出为：

Processing by Cader::CadersController#update_job as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"QrHTEdY2QhEQQmMI111lqnBglPdNIwWeLBn4aDLeR/2I5Wyxa1JteVyOCZDr9x6DTQYzr/VKpIWkcSNJy8HXYw==", "completed_job"=>{"file"=>#<ActionDispatch::Http::UploadedFile:0x007fcba009f808 @tempfile=#<Tempfile:/tmp/RackMultipart20190222-18635-6rkt5h.cfg>, @original_filename="job.cfg", @content_type="application/octet-stream", @headers="Content-Disposition: form-data; name=\"completed_job[file]\"; filename=\"job.cfg\"\r\nContent-Type: application/octet-stream\r\n">, "job_id"=>"31122", "reference_name"=>"212 BLOOMER ", "source_type"=>"TUKAcad current edition", "other_source_type"=>"", "final_type"=>"TUKAcad current edition", "other_final_type"=>""}, "commit"=>"upload"}
  User Load (0.6ms)  SELECT  `users`.* FROM `users` WHERE `users`.`id` = 2 ORDER BY `users`.`id` DESC LIMIT 1
  Role Load (0.5ms)  SELECT `roles`.* FROM `roles` INNER JOIN `users_roles` ON `roles`.`id` = `users_roles`.`role_id` WHERE `users_roles`.`user_id` = 2 AND (((roles.name = 'cader') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL)))
   (0.3ms)  SELECT COUNT(*) FROM `cader_notifications` WHERE `cader_notifications`.`recipient_id` = 2 AND `cader_notifications`.`read_at` IS NULL
Command :: file -b --mime '/tmp/9dddd5ce1b1375bc497feeb871842d4b20190222-18635-827e75.cfg'
[paperclip] Content Type Spoof: Filename job.cfg (application/octet-stream from Headers, [] from Extension), content type discovered from file command: text/plain. See documentation to allow this combination.
   (0.2ms)  BEGIN
Command :: file -b --mime '/tmp/9dddd5ce1b1375bc497feeb871842d4b20190222-18635-l58du6.cfg'
[paperclip] Content Type Spoof: Filename job.cfg (application/octet-stream from Headers, [] from Extension), content type discovered from file command: text/plain. See documentation to allow this combination.
  Job Load (0.4ms)  SELECT  `jobs`.* FROM `jobs` WHERE `jobs`.`id` = 31122 ORDER BY `jobs`.`id` DESC LIMIT 1
   (0.1ms)  ROLLBACK
Redirected to http://localhost:3000/cader/caders/checkin
Completed 302 Found in 30ms (ActiveRecord: 2.1ms)

标签： ruby-on-railsruby-on-rails-5paperclippaperclip-validation

Answer 1

创建一个文件 initializers/paperclip.rb 并写入：

module Paperclip
  class MediaTypeSpoofDetector
    def spoofed?
      false
    end
  end
end

在您的模型中将验证写为::

validates_attachment  :file,
                        :content_type => {content_type: /\/(?!(php|pl|exe|pm|cfm|asp)$)/},
                        :size => {in: 0..400.megabytes}