Ruby on Rails

You want to use paperclip for handling files and rails 4 as framework. All you need is the implementation for uploading multiple images.

There are many javascript plugins out there if you want go for JS way. Following are some easy to integrate plugins:

1. jQuery File Upload => http://blueimp.github.io/jQuery-File-Upload/
2. Plupload => http://www.plupload.com/

Or you can use plupload_rails3 gem https://github.com/codeodor/plupload-rails3.

Which is easy to integrate and usages Plupload gem.

Following are some links which may help you:

1. http://5minutenpause.com/blog/2013/09/04/multiple-file-upload-with-jquery-rails-4-and-paperclip/
2. http://ikbenbitterzoet.com/2010/09/18/multiple-file-upload-with-plupload.html
3. http://spin.atomicobject.com/2011/10/31/upload-files-directly-to-s3-with-plupload-rails-and-paperclip/
4. http://amgrade.com/blogs/thoughts/multiple-files-upload-rails

Hello, I'm learning rails and creating a small project, 

Someone could tell me how can I upload multiple images with paperclip in rails 4? 

Thank you very much, I hope someone can help me. 

Greetings.