clipboard-rails gem is the integration of clipboard.js javascript library for your Rails 4 application.

clipboard.js is a modern approach to copy text to clipboard No Flash. No dependencies. Just 2kb source: https://github.com/zenorocha/clipboard.js

Ruby gems url: https://rubygems.org/gems/clipboard-rails

Add this line to your application's Gemfile:

gem 'clipboard-rails'

And then execute:

$ bundle

Or install it yourself as:

$ gem install clipboard-rails

Now you need to edit your app/assets/javascripts/application.js file and add the following line:

//= require clipboard

Here is the example working code to test with your Rails application.

Add this sample code to your app/assets/javascripts/application.js file

$(document).ready(function(){  
  
  var clip = new Clipboard('.btn');
  console.log(clip);
	
});

Note: Here i am using gem 'jquery-turbolinks' for using the jquery $(document).ready function

Add this sample code to your template file like index.html.erb

<!-- Target -->
<textarea id="bar">Mussum ipsum cacilds...</textarea>

<!-- Trigger -->
<button class="btn" data-clipboard-action="cut" data-clipboard-target="#bar">
    Cut to clipboard
</button>

Read the clipboard.js documentation here http://zenorocha.github.io/clipboard.js/

After checking out the repo, run bin/setup to install dependencies. Then, run rake false to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/sadiqmmm/clipboard-rails. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.