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Heroku Deployment

Heroku buildpacks

React on Rails requires both a ruby environment (for Rails) and a Node environment (for Webpack), so you will need to have Heroku use multiple buildpacks.

Assuming you have downloaded and installed the Heroku command-line utility and have initialized the app, you will need to tell Heroku to use both buildpacks via the command-line:

heroku buildpacks:set heroku/ruby
heroku buildpacks:add --index 1 heroku/nodejs

For more information, see Using Multiple Buildpacks for an App

assets:precompile

rails/webpacker webpack configuration

If you're using the standard rails/webpacker configuration of webpack, then rails/webpacker will automatically modify or create an assets:precompile task to build your assets.

Alternatively, you can specify config.build_production_command to have react_on_rails invoke a command for you during assets:precompile.

config.build_production_command = "RAILS_ENV=production NODE_ENV=production bin/webpacker"

Consider Removing Webpacker's clean task

If you are deploying on Heroku, then you don't need Webpacker's clean task which might delete files that you need.

Rake::Task['webpacker:clean'].clear