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Font Awesome has an official Ruby on Rails (opens new window) gem for free and pro icons.

How to Install

There are different ways to install the free version vs. the pro version.

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Add the Font Awesome Ruby gem to your Gemfile:

gem "font-awesome-sass", "~> VERSION"

source "https://token:[email protected]/basic/fontawesome-pro/ruby/" do
  gem "font-awesome-pro-sass", "VERSION"
end

Time to Bundle

In the terminal and in your project folder:

 bundle install

Import Font Awesome

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Add the following to the app/assets/stylesheets/application.css.scss file:

@import "font-awesome";

@import "font-awesome-pro";

Huh, where's the application.css.scss file?

If the app/assets/stylesheets/application.css.scss does not exist then rename the app/assets/stylesheets/application.css and add the @import "font-awesome" statement below the *= require statements but outside of the comment block.

Style Time

Next, you need to choose which style of icons you want to use in your project. You may import any number of the styles. Font Awesome has the following styles:

# Nothing additional needed to install for free icons.
# Brands, free solid, and free regular icons are included with the import above.

@import "font-awesome-pro/brands";
@import "font-awesome-pro/solid";
@import "font-awesome-pro/regular";
@import "font-awesome-pro/light";
@import "font-awesome-pro/thin";
@import "font-awesome-pro/duotone";
@import "font-awesome-pro/sharp-solid";

Add Those Icons

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It's time!

<i class="fa-brands fa-font-awesome"></i>
<i class="fa-solid fa-user-secret"></i>
<i class="fa-regular fa-bell"></i>

<i class="fa-solid fa-alien"></i>
<i class="fa-regular fa-alien"></i>
<i class="fa-light fa-alien"></i>
<i class="fa-thin fa-alien"></i>
<i class="fa-duotone fa-alien"></i>
<i class="fa-sharp fa-solid fa-alien"></i>

Feeling your oats, add icons using the Rails helper function:

<%= icon('fa-brands', 'font-awesome')%>
<%= icon('fa-solid', 'user-secret')%>
<%= icon('fa-regular', 'bell')%>

<%= icon('fa-solid', 'alien')%>
<%= icon('fa-regular', 'alien')%>
<%= icon('fa-light', 'alien')%>
<%= icon('fa-thin', 'alien')%>
<%= icon('fa-duotone', 'alien')%>
<%= icon('fa-solid fa-sharp', 'alien')%>

Alright Stop, Animate, and Listen

Want to animate or change the size of your icons? Here's how:

<i class="fa-solid fa-user-secret fa-7x fa-flip"></i>

<i class="fa-thin fa-user-secret fa-7x fa-beat"></i>

Or animate with the Rails helper function:

<%= icon('fa-solid', 'user-secret', class:"fa-7x, fa-shake")%>
<%= icon('fa-brands', 'font-awesome', 'Font Awesome', id: 'my-icon', class: 'fa-shake')%>
<%= icon('fab', 'font-awesome', 'Font Awesome', id: 'my-icon', class: 'fa-beat')%>

<%= icon('fa-thin', 'alien', class:"fa-7x fa-bounce")%>
<%= icon('fa-light', 'font-awesome', 'Font Awesome', id: 'my-icon', class: 'fa-shake')%>
<%= icon('fad', 'font-awesome', 'Font Awesome', id: 'my-icon', class: 'fa-beat')%>

Note: the icon helper can take a hash of options that will be passed to the content_tag helper

Other Ruby Projects

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The path.scss file contains a function for using the font-path function if found. If the function is not found it will use the $fa-font-path variable for the path to the webfont files. You can override this variable to where your framework will store the webfonts files.