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A gem to provide Mapbox GL JS and it's ecosystem (plugins) for Rails applications 🚆
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app/assets Release 1.1.1 🎉 Jul 17, 2019
lib Release 1.1.1 🎉 Jul 17, 2019
test Refactor and add plugins Aug 17, 2018
.rubocop.yml Initial commit Jan 19, 2018
.travis.yml Release 1.1.1 🎉 Jul 17, 2019
Rakefile Bump to 0.48 Aug 17, 2018
mapbox-gl-rails.gemspec [ci skip] Fix README Aug 17, 2018
plugins.yaml Release 0.54 Apr 26, 2019

Mapbox for Rails

Gem Version Build Status License

mapbox-gl-rails provides the Mapbox GL JS library as a Rails engine for use with the asset pipeline. It uses the same versioning as the Mapbox GL JS.

Supports Rails >= 3.2 (see Travis build matrix).


Add this to your Gemfile:

gem 'mapbox-gl-rails'

and run bundle install.


In your application.js, include the following:

//*= require mapbox-gl
//= require_tree .

In your application.css, include the css file:

 *= require mapbox-gl

Then restart your webserver if it was previously running.

Congrats! You now have Mapbox GL JS on board and check out the Mapbox Examples.

If you need to use any available plugins, then don't forget to add them to application.js and application.css:


//*= require mapbox-gl-geocoder
// ...


 *= require mapbox-gl-geocoder
 *= require mapbox-gl-draw
 *= require mapbox-gl-directions
 *= require mapbox-gl-compare

Full list of integrated plugins you could find here.

Sass Support

If you prefer SCSS, add this to your application.css.scss file:

@import 'mapbox-gl';

If you use the Sass indented syntax, add this to your application.css.sass file:

@import mapbox-gl


Rails engines

When building a Rails engine that includes mapbox-gl-rails as a dependency, be sure to require "mapbox-gl-rails" somewhere during the intialization of your engine. Otherwise, Rails will not automatically pick up the load path of the mapbox-gl-rails assets and helpers.

Deploying to sub-folders

It is sometimes the case that deploying a Rails application to a production environment requires the application to be hosted at a sub-folder on the server. This may be the case, for example, if Apache HTTPD or Nginx is being used as a front-end proxy server, with Rails handling only requests that come in to a sub-folder such as In this case, the MapboxRails gem (and other asset-serving engines) needs to know the sub-folder, otherwise you can experience a problem roughly described as "my app works fine in development, but fails when I deploy it".

To fix this, set the relative URL root for the application. In the environment file for the deployed version of the app, for example config/environments/production.rb, set the config option action_controller.relative_url_root:

MyApp::Application.configure do

  # set the relative root, because we're deploying to /myrailsapp
  config.action_controller.relative_url_root  = "/myrailsapp"


The default value of this variable is taken from ENV['RAILS_RELATIVE_URL_ROOT'], so configuring the environment to define RAILS_RELATIVE_URL_ROOT is an alternative strategy.

In addition you need to indicate the subfolder when you precompile the assets:

RAILS_ENV=production bundle exec rake assets:precompile RAILS_RELATIVE_URL_ROOT=/myrailsapp

Rails 3.2

Note: In Rails 3.2, make sure mapbox-gl-rails is outside the bundler asset group so that these helpers are automatically loaded in production environments.


Versioning follows the core releases of Mapbox GL JS which follows Semantic Versioning 2.0 as defined at We will do our best not to make any breaking changes until Mapbox core makes a major version bump.

Additional build number can be added to fix internal gem errors (like


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