When you are building a web application, you definitely want to add an option for image uploading as well. In this tutorial, we will show you the necessary steps to enable upload multiple images/files using CarrierWave in Rails 4+ from scratch. A similar procedure can be applied for nested forms.
Step 1: In the gem file
CarrierWave is a Ruby gem that provides a simple and extremely flexible way to upload files from Ruby applications. You will need to add these gems to the Gemfile and run
