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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](https://devcenter.heroku.com/articles/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 ```
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12 entries across 12 versions & 1 rubygems