Assets precompile not being run on heroku cedar for rails 3.2 app

This seems to be solved now. I believe it was caused by the Rakefile not loading the assets:precompile task in production.

The rakefile was loading up tasks for both the cucumber and rspec gems which are not bundled into production. As a result the assets:precompile task was not available in production so heroku didn't attempt to run it.

I wrapped the test tasks in a environment check conditional like so:

if %(development test).include?(Rails.env)  require 'rspec/core'  require 'rspec/core/rake_task'end

If there's anything wrong in your Rakefile then the precompile step will be skipped entirely. For me, I was referring to a dependency that was only being loaded in my test and development environments and not production so the rakefile was bombing.

Using the suggestion from @Lecky-Lao worked for me.

heroku run rake -T --app staging-hawkmoRunning `rake -T` attached to terminal... up, run.1rake aborted!cannot load such file -- jasmine-headless-webkit

Once I saw that it was as simple as wrapping the Rakefile require in an environment test.

I normally add this to production.rb:

# Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)config.assets.precompile += %w( style.css grid.css ... geo.js jquery.flexslider-min.js)

and set:

config.assets.compile = false