amazon s3 - Rails carrierwave S3 get url with Content-Disposition header -

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We are using Carrier Says + AAS S3 to upload the file, and to provide us a download function the wanted.

For 1 solution, we use it: 

  = link_to "download", file.doc.url, download: file.original_name   
 And it does not work, under IE8, click on the link, this file will open. According to  
, I should add the  content-break  header,  
 then I have a AOS S3 document, me the  feedback-content-nature  to  file.doc.url ,  
 Is there a way I can do in a carrier, or I can use other methods ? Thanks for your help.   
 
 
 found it, for  fu = FileUploader.new , we use it Can:  
  fu.url (query: {"response-content-disposition" => "attachment;"}) read   
 Many tons of document and source code.

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