Lazy-load Rails partials via CableReady

with a helper in your template

<%= futurize @posts %>

custom <futurism-element>s (in the form of a <div> or a <tr is="futurism-table-row"> are rendered. Those custom elements have an IntersectionObserver attached that will send a signed global id to an ActionCable channel (FuturismChannel) which will then replace the placeholders with the actual resource partial.

With that method, you could lazy load every class that has to_partial_path defined (ActiveModel has by default).

You can pass the placeholder as a block:

<%= futurize @posts, extends: :tr do %>
  <td class="placeholder"></td>
<% end %>

Remember that you can override the partial path in you models, like so:

class Post < ApplicationRecord
  def to_partial_path
    "home/post"
  end
end

That way you get maximal flexibility when just specifying a single resource.

Add this line to your application's Gemfile:

gem 'futurism'

And then execute:

$ bundle

To copy over the javascript files to your application, run

$ bin/rails futurism:install

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

Thanks goes to these wonderful people (emoji key):

Julian Rubisch 💻

darkrubyist 💻 📖

This project follows the all-contributors specification. Contributions of any kind welcome!