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Ruby on Rails

spec

how to debug local rails server

setup

  • install rbenv: https://github.com/rbenv/rbenv
  • install ruby: rbenv install 2.5.1
  • set ruby version to local: rbenv local 2.5.1
  • add some gem to Gemfile
group :development do
  ...
  gem 'ruby-debug-ide'
  gem 'debase'
end
  • bundle install

.vscode/launch.json

{
	"version": "0.2.0",
	"configurations": [
		{
			"name": "launch Rails server",
			"type": "Ruby",
			"request": "launch",
			"cwd": "${workspaceRoot}",
			"program": "${workspaceRoot}/bin/rails",
			"args": [
				"server"
			],
			"useBundler": true,
		}
	]
}

points

  • useBundler: true

execute

how to debug remote rails server

.vscode/launch.json

{
	"version": "0.2.0",
	"configurations": [
		{
			"name": "attach remote Rails Server",
			"type": "Ruby",
			"request": "attach",
			"remoteHost": "127.0.0.1",
			"remotePort": "1234",
			"cwd": "${workspaceRoot}",
			"remoteWorkspaceRoot": "${workspaceRoot}",
		}
	]
}

point

  • "cdw": local dir
  • "remoteWorkspaceRoot": remote server root dir

execute

  • start rdebug-ide at remote server
bundle exec rdebug-ide --host 0.0.0.0 --port 1234  -- ./bin/rails server
  • start debug at vscode

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