#+TITLE:   lang/ruby
#+DATE:    January 16, 2007
#+SINCE:   v1.3
#+STARTUP: inlineimages

* Table of contents :TOC:
- [[#description][Description]]
  - [[#module-flags][Module Flags]]
  - [[#packages][Packages]]
  - [[#hacks][Hacks]]
- [[#prerequisites][Prerequisites]]
  - [[#ubuntu][Ubuntu]]
  - [[#macos][MacOS]]
  - [[#windows][Windows]]
- [[#appendix][Appendix]]
  - [[#commands][Commands]]

* Description
This module add Ruby and optional Ruby on Rails support to Emacs.

+ Code completion (robe)
+ Syntax checking (flycheck)
+ Jump-to-definitions (robe)
+ Bundler
+ Rubocop integration (flycheck)

** Module Flags
+ =+lsp= Enables LangServer support for ruby. You must have =:tools lsp= enabled
  for this to work, as well as the langserver (solargraph) installed on your
  system.
+ =+rvm= Enables RVM (Ruby Version Manager) integration.
+ =+rbenv= Enables rbenv integration.
+ =+chruby= Enables chruby integration.
+ =+rails= Enables rails navigational commands, plus server+console integration.

** Packages
+ [[https://github.com/nonsequitur/inf-ruby][inf-ruby]]
+ [[https://github.com/company-mode/company-inf-ruby][company-inf-ruby]]
+ [[https://github.com/rubocop-hq/rubocop-emacs][rubocop]]
+ [[https://github.com/dgutov/robe][robe]]
+ [[https://github.com/endofunky/bundler.el/tree/43efb6be4ed118b06d787ce7fbcffd68a31732a7][bundler]]
+ [[https://github.com/asok/rake][rake]]
+ [[https://github.com/senny/rbenv.el][rbenv]] (=+rbenv=)
+ [[https://github.com/senny/rvm.el][rvm]] (=+rvm=)
+ [[https://github.com/pezra/rspec-mode][rspec-mode]]
+ [[https://github.com/arthurnn/minitest-emacs][minitest]]
+ [[https://github.com/asok/projectile-rails][projectile-rails]] (=+rails=)
+ [[https://github.com/eschulte/jump.el/tree/e4f1372cf22e811faca52fc86bdd5d817498a4d8][inflections]]
+ [[https://github.com/plexus/chruby.el][chruby]] (=+chruby=)

** Hacks
+ =projectile-rails-custom-server-command= were changed to suppress extraneous output logged
  to console. This was done to prevent a memory leak where the underlying
  process would continue logging to an Emacs buffer, which would grow forever.  You can change to default behaviour by
  setting this variable to =nil=.

* Prerequisites
Many of this modules plugins require ruby with some version manager (RVM or
Rbenv) and the rubocop gem.

** Ubuntu
You can follow [[https://gorails.com/setup/ubuntu/18.04][this guide]]. After ruby installation, run ~gem install rubocop~.
** MacOS
You can follow [[https://gorails.com/setup/osx/10.15-catalina][this guide]]. After ruby installation, run ~gem install rubocop~.
** Windows
You can follow [[https://gorails.com/setup/windows/10][this guide]]. After ruby installation, run ~gem install rubocop~.

* Appendix
** Commands
*** robe
| command              | key / ex command | description                                                        |
|----------------------+------------------+--------------------------------------------------------------------|
| ~robe-start~         | =SPC m \'=       | Open ruby lang server for auto-completions and jump to definitions |
| ~robe-rails-refresh~ | =SPC m R=        | Refresh the lang server.                                           |

*** projectile-rails
The projectile-rails prefix is =SPC m r=.  Here is some examples:

| command                       | key / ex command | description                                       |
|-------------------------------+------------------+---------------------------------------------------|
| ~projectile-rails-console~    | =SPC m r r=      | Open Rails console                                |
| ~projectile-rails-server~     | =SPC m r R=      | Open Rails server                                 |
| ~projectile-rails-find-model~ | =SPC m r m=      | Find any model of the project                     |
| ~projectile-rails-find-model~ | =SPC m r M=      | Find the model related of currently open resource |
*** bundler
The bundler prefix is =SPC m b=.  Here is some examples:

| command          | key / ex command | description         |
|------------------+------------------+---------------------|
| ~bundle-install~ | =SPC m b i=      | Runs bundle install |
| ~bundle-update~  | =SPC m b u=      | Runs bundle update  |
*** rspec-mode
The rspec-mode prefix is =SPC m t=.  Here is some examples:
|                       |                  |                                   |
| command               | key / ex command | description                       |
|-----------------------+------------------+-----------------------------------|
| ~rspec-verify~        | =SPC m t v=      | Runs rspec on current file        |
| ~rspec-verify-method~ | =SPC m t s=      | Runs rspec for the item on cursor |