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Attempting Automation of Rails App Generation with .railsrc and App Generator
Raw
00: WIP: Automating Rails App Generation with .railsrc and App Generator
## Intro
(NB: Forgive the many content-free revisions; it has been many moons since I have created a Gist with attachments, and getting the
ordering currect is maddeningly non-trivial.)
After too many years doing this, never mind how many, I'm attempting to automate the generation of Rails apps using a
`.railsrc` file and an app-generation template. The `.railsrc` file, largely cribbed from numerous others, appears to work
splendidly.
The template file, which should automate setup of the newly-created app to current shop standards, is being developed incrementally; increments largely separated by *the next wall I hit*. The current "wall" has had me stopped cold for two days; my Stack Overflow skills and Google-fu are clearly not up to the task.
## Possibly Relevant Background Items
1. Ruby is installed by way of [`rbenv`](https://github.com/rbenv/rbenv#readme), which we have used for *years* without known issues. We are presently on Ruby 3.0.2p107.
2. I'm attempting to continue our long-time shop-standard usage of [`rbenv-gemsets`](https://github.com/jf/rbenv-gemset#readme), which has hitherto (before attempted use of an app generator) saved our proverbial bacon often enough that I still have *some* hair. It supports our experimentation and evolution of candidate Gems for use, without polluting the system Gem repository.
## Problem Statement
When I generate a new app using the template, everything appears to work fine setting up the new app up to and including when `bundle install` is run. However, immediately after bundling reports success, the Gems are installed not in the Gemset, but in the `rbenv` Gem repository for the current Ruby version. Running the installation process manually stores the Gems in the expected place.
Also, immediately after Bundler success, I see two error messages:
```
Skipping `rails webpacker:install` because `bundle install` was skipped.
To complete setup, you must run `bundle install` followed by `rails webpacker:install`.
```
While I *do* specify `--skip-bundle` in the `~/.railsrc` file, I run `bundler install` explicitly in the generator, after the `Gemfile` is set up to suit.
I'm fairly certain that this will boil down to a *d'oh!* moment as my nose is rubbed in the difference between what I *think* I see (in the generator source) vs what is actually there. For that, I extend my plea to you folks.
So, my questions are:
1. Primarily, how do I get the generator to install Webpacker and continue with the existing bundle?
2. Why are the bundled Gems being installed in the `rbenv` Gem repository rather than my gemset, as occurs when I proceed manually?
Help?
Raw
dot-railsrc
# This is my ~/.railsrc file. There are many like it, but this one is mine.
# known defaults
--no-api
--no-dev
--no-edge
--no-no-rc # obviously...
--no-skip-action-cable
--no-skip-active-record
--no-skip-gemfile
--no-skip-git
--no-skip-javascript
--no-skip-keeps
--no-skip-listen
--no-skip-puma
--no-skip-sprockets
--no-skip-turbolinks
--no-skip-yarn
--skip-coffee
--skip-namespace
--skip-system-test # ditto
--skip-test # Don't use MiniTest; we'll add RSpec later
# --ruby=/path/to/executable/ruby
# --template=/path/to/app/template
# Custom/non-default values
--database=postgresql
--skip-action-mailer
--skip-active-storage
--skip-bootsnap
--skip-bundle
--skip-spring
--webpack=stimulus
# --template=/path/to/template.rb
Raw
template.rb
# This is my (WIP) ~/src/rails/template.rb file, patterned after an oft-used, documented manual procedure.
# Explicitly specify Gems' dependencies to eliminate Dependabot warnings.
# FIXME: Outdated, hardcoded Node packages are *evil*.
# gem 'rails', '~> 6.1.4', '>= 6.1.4.1'
# gem 'pg', '~> 1.1'
# gem 'puma', '~> 5.0'
# gem 'webpacker', '~> 5.0'
# gem 'turbolinks', '~> 5'
# gem 'jbuilder', '~> 2.7'
gem 'redis', '~> 4.0'
gem 'bcrypt', '~> 3.1.7'
gem "bundler-audit", "~> 0.9.0"
gem "dotenv-rails", "~> 2.7"
gem "dry-monads", "~> 1.4"
gem "ice_nine", "~> 0.11.2"
gem "slim-rails", "~> 3.3"
gem "foreman", "~> 0.87.2"
gem "sassc-rails", "~> 2.1"
gem "bundler", "~> 2.2"
gem "database_cleaner", "~> 2.0"
gem "pry-byebug", "~> 3.8"
gem "pry-doc", "~> 1.2"
gem "pry-rails", "~> 0.3.9"
# gem "stimulus_reflex", "~> 3.4"
gem "html2slim", "~> 0.2.0"
gem "nokogiri", ">= 1.12.5"
gem "view_component", "~> 2.40", require: 'view_component/engine'
gem_group :development, :test do
# gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
gem "flay", "~> 2.12"
gem "flog", "~> 4.6"
gem "inch", "~> 0.8.0"
gem "reek", "~> 6.0"
gem "rubocop-rails", "~> 2.12"
gem "yard", "~> 0.9.26"
gem "fabrication", "~> 2.22"
gem "simplecov", "~> 0.21.2"
gem "ffaker", "~> 2.19"
gem "rspec-html-matchers", "~> 0.9.4"
end
# gem_group :development do
# gem 'web-console', '>= 4.1.0'
# gem 'rack-mini-profiler', '~> 2.0'
# gem 'listen', '~> 3.3'
# end
gem_group :test do
gem 'capybara', '>= 3.26'
gem 'selenium-webdriver'
# Easy installation and use of web drivers to run system tests with browsers
gem 'webdrivers'
gem "rspec-rails", "~> 5.0"
end
run "cp .ruby-version #{@app_name}"
run 'rm -f .rbenv-gemset'
run "mkdir -p bin tmp/gemset"
run "rbenv gemset delete #{ENV['RBENV_VERSION']} ./tmp/gemset 2>&1 > /dev/null"
run "rbenv gemset create #{ENV['RBENV_VERSION']} ./tmp/gemset"
run 'rm -f .rbenv-gemset'
run "rbenv gemset init ./tmp/gemset"
# run "echo ./tmp/gemset > .rbenv-gemset"
run 'cd #{@app_name}; rbenv rehash; echo "Active gemsets: " `rbenv gemset active`'
run "ls -la ."
run "pwd"
run "bundle install"
run "ls -la ./tmp/gemset/"
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