Upload image post request over http to other application using Paperclip

Question

I am able to upload image attachements using paperclip to my application. But I would like to send the image to another application via faraday connection. Other attributes are successfully sent but not the attachment image. I am not sure what I should do to achieve this.

Answer 1

You need to use an HTTP library that can create Multipart Post requests.

For example Typhoeus can do file uploads: https://github.com/typhoeus/typhoeus#handling-file-uploads.

There's also Net::HTTP Multipart Post: https://github.com/nicksieger/multipart-post

And finally: https://github.com/jwagener/httmultiparty

Read the READMEs to any of those gems, they all make it equally easy to do file uploads. I like Typhoeus because it can do parallel requests. The other two are a bit simpler but equally useful.

Learn more about what a multipart form post is:

• What is http multipart request?
• application/x-www-form-urlencoded or multipart/form-data?
• http://www.huyng.com/posts/under-the-hood-an-http-request-with-multipartform-data/

Answer 2

If I have to stick with using faraday, here is how to achieve the posting of paperclip attachments.

    Faraday.new(:url => url) do |faraday|
        faraday.request :multipart
    end

And put the attachement as such in where post request happens

params['avatar'] = Faraday::UploadIO.new(avatar.map.path, 'image/jpeg')