class Heroku::Command::Stack

manage the stack for an app

Public Instance Methods

index() click to toggle source

stack

show the list of available stacks

Example:

$ heroku stack
=== myapp Available Stacks
  bamboo-mri-1.9.2
  bamboo-ree-1.8.7
* cedar

# File lib/heroku/command/stack.rb, line 20
def index
  validate_arguments!

  stacks_data = api.get_stack(app).body

  styled_header("#{app} Available Stacks")
  stacks = stacks_data.map do |stack|
    row = [stack['current'] ? '*' : ' ', stack['name']]
    row << '(beta)' if stack['beta']
    row << '(deprecated)' if stack['deprecated']
    row << '(prepared, will migrate on next git push)' if stack['requested']
    row.join(' ')
  end
  styled_array(stacks)
end

migrate() click to toggle source

stack:migrate STACK

prepare migration of this app to a new stack

Example:

$ heroku stack:migrate cedar
-----> Preparing to migrate evening-warrior-2345
       bamboo-mri-1.9.2 -> bamboo-ree-1.8.7

       NOTE: You must specify ALL gems (including Rails) in manifest

       Please read the migration guide:
       http://devcenter.heroku.com/articles/bamboo

-----> Migration prepared.
       Run 'git push heroku master' to execute migration.

# File lib/heroku/command/stack.rb, line 54
def migrate
  unless stack = shift_argument
    error("Usage: heroku stack:migrate STACK.\nMust specify target stack.")
  end

  display(api.put_stack(app, stack).body)
end