This gem was built for the use of 'Lightbox for Bootstrap 4' as Rails assets pipeline and you can look for the detailed documents at http://ashleydw.github.io/lightbox/

Updated using Bootstrap 4 alpha 6 version

Add this line to your application's Gemfile:

gem 'lightbox-bootstrap-rails', '5.1.0.1'

And then execute:

$ bundle

Or install it yourself as:

$ gem install lightbox-bootstrap-rails

in assets/javascripts/application.js

//= ...
//= require lightbox-bootstrap
//= ...

in assets/stylesheets/application.scss

...
@import "bootstrap";
@import "lightbox-bootstrap";
...

or in assets/stylesheets/application.css

/*...
*= require lightbox-bootstrap
*= require ...
*/

Finally, you should add assets/javascripts/lightbox_bootstraped.coffee as follows:

$(document).delegate '*[data-toggle="lightbox"]', 'click', (event) ->
  event.preventDefault()
  $(this).ekkoLightbox()
  return

Among the gem sources, a test application is provided and there you can find how to code in the wild.

• v 3.3.0.0 : initially created.
• v 3.3.0.1 : deployed to Rubygems.org
• v 3.3.0.2 : modified @import stylesheet syntax
• v 3.3.0.3 : fixed typos in ekko-lightbox.min.js and ekko-lightbox.js (lightbox v4.0.2 for Boostrap 3).
• v 5.0.0.0 : updated with lightbox v5.0.0 for Boostrap 4 alpha 5
• v 5.1.0.0 : updated with lightbox v5.1.0 for Boostrap 4 alpha 6
• v 5.1.0.1 : fixed modal dialog alignments

1. Fork it ( https://github.com/[my-github-username]/lightbox-bootstrap-rails/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request