capistrano_custom_tasks

🛫 Automating Deploy with Capistrano Custom Tasks

Capistrano streamlines Rails deployments by letting you define custom tasks for database migrations, asset handling, and service restarts. You can hook into deploy lifecycles (before, after) to ensure steps run in the proper order, reducing manual intervention. Here’s how to add tasks in your config/deploy.rb to migrate and restart seamlessly.

# config/deploy.rb
namespace :deploy do
  desc 'Run database migrations'
  task :migrate_db do
    on roles(:db) do
      within release_path do
        with rails_env: fetch(:rails_env) do
          execute :rake, 'db:migrate'
        end
      end
    end
  end
  before :updated, :migrate_db

  desc 'Restart application via touch'
  task :restart do
    on roles(:app) do
      execute :touch, release_path.join('tmp/restart.txt')
    end
  end
  after :publishing, :restart
end