I was using paperclip for file upload. with validations as below:
validates_attachment_content_type :upload, :content_type=>['application/pdf'],
:if => Proc.new { |module_file| !module_file.upload_file_name.blank? },
:message => "must be in '.pdf' format"
But, my client complained today that he is not able to upload pdf. After investigating I come to know from request headers is that the file being submitted had content_type=application/octet-stream.
Allowing application/octet-stream will allow many type of files for upload.
Please suggest a solution to deal with this.