Capistrano 3 pulling command line arguments

Question

I\'m in the process of upgrading from Capistrano 2 to Capistrano 3. In Cap 2 I was using the following to take a command line argument as the branch name (otherwise default

Answer 1

To give an updated and working solution for Capistrano 3 (as it took me a while to find and too many tests to make it works).

My files are like:

config/
    deploy/
        staging.rb
        production.rb
    deploy.rb
...
Capfile

In staging.rb I have:

server 'staging', roles: %w(db)

set :branch,    ENV.fetch('REVISION', 'master')
set :use_sudo,  false
set :user,      'toto'
set :deploy_to, '/var/www'

(In server 'staging', staging is a SSH connexion, defined in my .ssh/config)

Then, to deploy a specific revision, I just need to call:

cap staging deploy REVISION=3b2d9ab

Where 3b2d9ab is the Git commit hash (short or long version).