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@headius
Created May 28, 2026 15:06
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Example rails new session with JRuby template for JDBC adapters
[] jruby $ rails new --skip-kamal --template https://www.jruby.org/files/rails/8.0.rb blog
create
create README.md
create Rakefile
create .ruby-version
create config.ru
create .gitignore
create .gitattributes
create Gemfile
run git init from "."
Initialized empty Git repository in /Users/headius/work/jruby/blog/.git/
create app
create app/assets/stylesheets/application.css
create app/controllers/application_controller.rb
create app/helpers/application_helper.rb
create app/jobs/application_job.rb
create app/mailers/application_mailer.rb
create app/models/application_record.rb
create app/views/layouts/application.html.erb
create app/views/layouts/mailer.html.erb
create app/views/layouts/mailer.text.erb
create app/views/pwa/manifest.json.erb
create app/views/pwa/service-worker.js
create app/assets/images
create app/assets/images/.keep
create app/controllers/concerns/.keep
create app/models/concerns/.keep
create bin
create bin/brakeman
create bin/dev
create bin/rails
create bin/rake
create bin/rubocop
create bin/setup
create bin/thrust
create Dockerfile
create .dockerignore
create bin/docker-entrypoint
create .rubocop.yml
create .github/workflows
create .github/workflows/ci.yml
create .github/dependabot.yml
create config
create config/routes.rb
create config/application.rb
create config/environment.rb
create config/cable.yml
create config/puma.rb
create config/storage.yml
create config/environments
create config/environments/development.rb
create config/environments/production.rb
create config/environments/test.rb
create config/initializers
create config/initializers/assets.rb
create config/initializers/content_security_policy.rb
create config/initializers/cors.rb
create config/initializers/filter_parameter_logging.rb
create config/initializers/inflections.rb
create config/initializers/new_framework_defaults_8_0.rb
create config/locales
create config/locales/en.yml
create config/master.key
append .gitignore
create config/boot.rb
create config/database.yml
create db
create db/seeds.rb
create lib
create lib/tasks
create lib/tasks/.keep
create log
create log/.keep
create public
create public/400.html
create public/404.html
create public/406-unsupported-browser.html
create public/422.html
create public/500.html
create public/icon.png
create public/icon.svg
create public/robots.txt
create script
create script/.keep
create tmp
create tmp/.keep
create tmp/pids
create tmp/pids/.keep
create vendor
create vendor/.keep
create test/fixtures/files
create test/fixtures/files/.keep
create test/controllers
create test/controllers/.keep
create test/mailers
create test/mailers/.keep
create test/models
create test/models/.keep
create test/helpers
create test/helpers/.keep
create test/integration
create test/integration/.keep
create test/test_helper.rb
create test/system
create test/system/.keep
create test/application_system_test_case.rb
create storage
create storage/.keep
create tmp/storage
create tmp/storage/.keep
remove config/initializers/cors.rb
remove config/initializers/new_framework_defaults_8_0.rb
apply https://www.jruby.org/files/rails/8.0.rb
gsub Gemfile
run bundle install --quiet
run bundle binstubs bundler
Bundler itself does not use binstubs because its version is selected by RubyGems
rails importmap:install
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism.rb:95: warning: already initialized constant Prism::BACKEND
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism/ffi.rb:28: warning: already initialized constant Prism::LibRubyParser::INCLUDE_DIR
apply /Users/headius/work/jruby/lib/ruby/gems/shared/gems/importmap-rails-2.2.3/lib/install/install.rb
Add Importmap include tags in application layout
insert app/views/layouts/application.html.erb
Create application.js module as entrypoint
create app/javascript/application.js
Use vendor/javascript for downloaded pins
create vendor/javascript
create vendor/javascript/.keep
Configure importmap paths in config/importmap.rb
create config/importmap.rb
Copying binstub
create bin/importmap
run bundle install --quiet
rails turbo:install stimulus:install
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism.rb:95: warning: already initialized constant Prism::BACKEND
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism/ffi.rb:28: warning: already initialized constant Prism::LibRubyParser::INCLUDE_DIR
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism.rb:95: warning: already initialized constant Prism::BACKEND
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism/ffi.rb:28: warning: already initialized constant Prism::LibRubyParser::INCLUDE_DIR
apply /Users/headius/work/jruby/lib/ruby/gems/shared/gems/turbo-rails-2.0.23/lib/install/turbo_with_importmap.rb
Import Turbo
append app/javascript/application.js
Pin Turbo
append config/importmap.rb
run bundle install --quiet
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism.rb:95: warning: already initialized constant Prism::BACKEND
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism/ffi.rb:28: warning: already initialized constant Prism::LibRubyParser::INCLUDE_DIR
apply /Users/headius/work/jruby/lib/ruby/gems/shared/gems/stimulus-rails-1.3.4/lib/install/stimulus_with_importmap.rb
Create controllers directory
create app/javascript/controllers
create app/javascript/controllers/index.js
create app/javascript/controllers/application.js
create app/javascript/controllers/hello_controller.js
Import Stimulus controllers
append app/javascript/application.js
Pin Stimulus
Appending: pin "@hotwired/stimulus", to: "stimulus.min.js"
append config/importmap.rb
Appending: pin "@hotwired/stimulus-loading", to: "stimulus-loading.js"
append config/importmap.rb
Pin all controllers
Appending: pin_all_from "app/javascript/controllers", under: "controllers"
append config/importmap.rb
run bundle install --quiet
rails solid_cache:install solid_queue:install solid_cable:install
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism.rb:95: warning: already initialized constant Prism::BACKEND
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism/ffi.rb:28: warning: already initialized constant Prism::LibRubyParser::INCLUDE_DIR
create config/cache.yml
create db/cache_schema.rb
gsub config/environments/production.rb
create config/queue.yml
create config/recurring.yml
create db/queue_schema.rb
create bin/jobs
gsub config/environments/production.rb
create db/cable_schema.rb
force config/cable.yml
Gemfile customized for JDBC and dependencies bundled successfully!
[] jruby $ cd blog
[] blog $ rails generate scaffold post title:string body:text published:boolean
chruby: unknown Ruby: jruby-10.1.1.0-SNAPSHOT
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism.rb:95: warning: already initialized constant Prism::BACKEND
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism/ffi.rb:28: warning: already initialized constant Prism::LibRubyParser::INCLUDE_DIR
invoke active_record
create db/migrate/20260528150311_create_posts.rb
create app/models/post.rb
invoke test_unit
create test/models/post_test.rb
create test/fixtures/posts.yml
invoke resource_route
route resources :posts
invoke scaffold_controller
create app/controllers/posts_controller.rb
invoke erb
create app/views/posts
create app/views/posts/index.html.erb
create app/views/posts/edit.html.erb
create app/views/posts/show.html.erb
create app/views/posts/new.html.erb
create app/views/posts/_form.html.erb
create app/views/posts/_post.html.erb
invoke resource_route
invoke test_unit
create test/controllers/posts_controller_test.rb
create test/system/posts_test.rb
invoke helper
create app/helpers/posts_helper.rb
invoke test_unit
invoke jbuilder
create app/views/posts/index.json.jbuilder
create app/views/posts/show.json.jbuilder
create app/views/posts/_post.json.jbuilder
[] blog $ rake db:migrate
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism.rb:95: warning: already initialized constant Prism::BACKEND
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism/ffi.rb:28: warning: already initialized constant Prism::LibRubyParser::INCLUDE_DIR
== 20260528150311 CreatePosts: migrating ======================================
-- create_table(:posts)
-> 0.0117s
== 20260528150311 CreatePosts: migrated (0.0123s) =============================
[] blog $ rails server
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism.rb:95: warning: already initialized constant Prism::BACKEND
/Users/headius/work/jruby/lib/ruby/gems/shared/gems/prism-1.9.0/lib/prism/ffi.rb:28: warning: already initialized constant Prism::LibRubyParser::INCLUDE_DIR
=> Booting Puma
=> Rails 8.0.5 application starting in development
=> Run `bin/rails server --help` for more startup options
Puma starting in single mode...
* Puma version: 8.0.2 ("Into the Arena")
* Ruby version: jruby 10.1.1.0-SNAPSHOT (4.0.0) 2026-05-22 2e078cd889 OpenJDK 64-Bit Server VM 21.0.8+9-LTS on 21.0.8+9-LTS +indy +jit [arm64-darwin]
* Min threads: 3
* Max threads: 3
* Environment: development
* PID: 31463
* Listening on http://[::1]:3000
* Listening on http://127.0.0.1:3000
Use Ctrl-C to stop
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