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[Heroku] Solution for rake assets:precompile Error in Rails 3.2 Apps

Tadashi Shigeoka ·  Sun, June 17, 2012

Here’s how to solve the rake assets:precompile error that occurs when doing git push of a Rails 3.2 app on Heroku.

Heroku

rake assets:precompile Error Message

-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       rake aborted!
       could not connect to server: Connection refused
       Is the server running on host "127.0.0.1" and accepting
       TCP/IP connections on port 5432?
       Tasks: TOP => environment
       (See full trace by running task with --trace)
       Precompiling assets failed, enabling runtime asset compilation
       Injecting rails31_enable_runtime_asset_compilation
       Please see this article for troubleshooting help:
       http://devcenter.heroku.com/articles/rails31_heroku_cedar#troubleshooting

Solution for rake assets:precompile Error

The solution is simply to add the following setting to application.rb:

config/application.rb

# For Heroku
config.assets.initialize_on_precompile = false

That’s all from solving the rake assets:precompile error on Heroku + Rails 3.2, from the Gemba.

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