Polymer Core elements are a set of utility elements including general-purpose UI elements (such as icons, layout elements, and toolbars), as well as non-UI elements providing features like AJAX, signaling and storage.

Polymer-core-rails gem brings polymer core web components into your Rails project.

Add this line to your application's Gemfile:

gem 'polymer-core-rails'

And then execute:

$ bundle

Or install it yourself as:

$ gem install polymer-core-rails

In order to use Polymer core elements you need to have polymer installed in your project. Use polymer-rails gem for adding polymer to your Rails application.

gem 'polymer-rails'
gem 'polymer-core-rails'

After runnign bundle install require needed core elements into your application.html manifest file.

//= require polymer/polymer
//= require core-ajax/core-ajax
//= require core-input/core-input
.....
//= require core-tooltip/core-tooltip

Each component should be required only once. Thus if you've already required component that has dependencies, you don't need to explicitly require any of dependencies, otherwise it will raise exception.

• core-a11y-keys
• core-ajax
• core-animated-pages
• core-animation
• core-collapse
• core-drag-drop
• core-drawer-panel
• core-field
• core-header-panel
• core-icon
• core-icon-button
• core-input
• core-list
• core-localstorage
• core-media-query
• core-meta
• core-overlay
• core-pages
• core-range
• core-scroll-header-panel
• core-selection
• core-selector
• core-shared-lib
• core-signals
• core-splitter
• core-style
• core-toolbar
• core-tooltip
• core-transition

1. Fork it ( https://github.com/[my-github-username]/polymer_core_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