CSS Naked Day Rails

This gem gives Rails views a css_naked_day? helper that is true during CSS Naked Day.

CSS Naked Day is April 9th, and it lasts for as long as it's April 9th somewhere on Earth. That's 50 hours, from 00:00 on April 9 in UTC+14 until 24:00 on April 9 in UTC-12 (10:00 UTC April 8 → 12:00 UTC April 10). The check doesn't depend on your server's time zone or config.time_zone.

Supports Rails 5.0 through 8.1.

Add the gem to your Gemfile and run bundle install.

gem "css_naked_day_rails"

Wrap the tags that load your stylesheets in your layout:

<% unless css_naked_day? %>
  <%= stylesheet_link_tag :app, "data-turbo-track": "reload" %>
<% end %>

The same works for stylesheet_pack_tag, javascript_include_tag and so on. Inline <style> blocks and style="" attributes need the same treatment if you want to go fully naked.

To tell visitors what's going on:

<% if css_naked_day? %>
  <p>The website isn't broken, it's <%= link_to "CSS Naked Day!", "https://css-naked-day.org" %></p>
<% end %>

Outside of views, use CssNakedDayRails.active? (or helpers.css_naked_day? in a controller).

To see your site naked before April 9th, put this in an initializer, e.g. config/initializers/css_naked_day.rb:

CssNakedDayRails.force = true if Rails.env.development?

Set force to false to turn the check off entirely, or leave it as nil to follow the calendar.

If you cache your layout, pages or responses (fragment caching, a CDN, expires_in), a cached version can be served with styles during CSS Naked Day, or without them after it ends. Leave the stylesheet tags out of cached fragments, or include css_naked_day? in the cache key:

<% cache [:head, css_naked_day?] do %>
  ...
<% end %>

bundle install
bundle exec rake

To test against a specific Rails version:

BUNDLE_GEMFILE=gemfiles/rails_7_2.gemfile bundle install
BUNDLE_GEMFILE=gemfiles/rails_7_2.gemfile bundle exec rake

CI runs the tests against every Rails minor version from 5.0 to 8.1.