Hi, as I was deploying rails app on App Platform, I was getting error as followed. Since yarn is already included when I have webpacker gem in the project Gemfile, however, I suspect yarn install
was not executed before the out-of-box rake assets:precompile
command. So, I’m getting the file not found due to no node_modules being installed.
Cleaning up the bundler cache.
truscan-demo | 21:33:34 -----> Installing node-v12.16.2-linux-x64
truscan-demo | 21:33:39 -----> Installing yarn-v1.22.4
truscan-demo | 21:33:40 -----> Detecting rake tasks
truscan-demo | 21:34:00 -----> Preparing app for Rails asset pipeline
truscan-demo | 21:34:00 Running: rake assets:precompile
truscan-demo | 21:34:23 cd "/workspace" && RAILS_ENV=production bin/webpack
truscan-demo | 21:34:26 /layers/heroku_ruby/gems/vendor/bundle/ruby/2.6.0/gems/webpacker-3.6.0/lib/webpacker/webpack_runner.rb:11:in `exec': No such file or directory - /workspace/node_modules/.bin/webpack (Errno::ENOENT)
truscan-demo | 21:34:26 from /layers/heroku_ruby/gems/vendor/bundle/ruby/2.6.0/gems/webpacker-3.6.0/lib/webpacker/webpack_runner.rb:11:in `block in run'
truscan-demo | 21:34:26 from /layers/heroku_ruby/gems/vendor/bundle/ruby/2.6.0/gems/webpacker-3.6.0/lib/webpacker/webpack_runner.rb:10:in `chdir'
truscan-demo | 21:34:26 from /layers/heroku_ruby/gems/vendor/bundle/ruby/2.6.0/gems/webpacker-3.6.0/lib/webpacker/webpack_runner.rb:10:in `run'
truscan-demo | 21:34:26 from /layers/heroku_ruby/gems/vendor/bundle/ruby/2.6.0/gems/webpacker-3.6.0/lib/webpacker/runner.rb:6:in `run'
truscan-demo | 21:34:26 from bin/webpack:15:in `<main>'
truscan-demo | 21:34:26 rake aborted!
truscan-demo | 21:34:26 Command failed with status (1): [cd "/workspace" && RAILS_ENV=production bi...]
truscan-demo | 21:34:26 /layers/heroku_ruby/gems/vendor/bundle/ruby/2.6.0/gems/react_on_rails-11.1.8/lib/tasks/assets.rake:64:in `block (3 levels) in <top (required)>'
truscan-demo | 21:34:26 Tasks: TOP => assets:precompile => react_on_rails:assets:compile_environment => react_on_rails:assets:webpack
truscan-demo | 21:34:26 (See full trace by running task with --trace)
truscan-demo | 21:34:26
truscan-demo | 21:34:26 !
truscan-demo | 21:34:26 ! Precompiling assets failed.
Note that I have yarn install
as build command already. Perhaps it is to run after rake assets:precompeile
, but I need it before this rake task. Please help.
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thanks @kamaln7 for the advice. However, this hook was performed after the assets_precompile task still.
I believe
react_on_rails
overrides theassets_precompile
task with its build command. I resolved this by modifyingreact_on_rails
build command, inreact_on_rails.rb
:I have added
yarn install
right before the bin/webpack build command. works for me :)Hi @fung933,
That’s correct, the custom build commands are run at the end of the build, after all the built-in buildpacks have finished processing.
It looks like this issue is specific to the
react_on_rails
gem which expectsyarn install
to be run beforerake assets:precompile
. We’re working on making this work out of the box, but until then, you might be able to use a pre-assets:precompile
task to runyarn install
(source):I’m not familiar enough with rake myself so I don’t know if this will work with the current versions of rake.