Use SVG icons in Ruby.

Ascona loads your SVG icons into memory at boot. Fast lookups, simple helper.

gem 'ascona'

Then bundle install.

Generate the initializer:

rails generate ascona:install

Or create config/initializers/ascona.rb manually:

Ascona.configure do |config|
  config.icon_path = "app/assets/icons"
  config.default_library = :lucide
end

ascona list                          # Show available libraries
ascona download lucide               # Download all icons
ascona download heroicons --variant=outline  # Download specific variant

Each SVG library should be stored in separate folders (create custom libraries by adding a new folder):

app/assets/icons/
  lucide/
    star.svg
    arrow-left.svg
  heroicons/
    outline/
      check.svg
    solid/
      check.svg

The name of the folder will be used as the library name.

<%= icon "star" %>
<%= icon "star", size: 5 %>
<%= icon "star", class: "w-5 h-5" %>
<%= icon "star", library: :heroicons, variant: :outline %>

The size option adds Tailwind classes w-{size} h-{size}.

Set a default size for all icons:

config.default_size = 5

Icons without an explicit size will use this default.

Some libraries have variants. Set defaults per library (for rendering only):

config.default_variants = { heroicons: :outline }

Note: Some libraries have no default variant. You must specify one when downloading (--variant=outline) and when rendering (variant: :outline) unless set in config.

Include the helper manually:

include Ascona::Helper

Call Ascona.load before using icons.

MIT