Array for platform family vs rubocop

Question

I am trying to use an array in Chef for platform_family, and according to the chef docs I have the right syntax, but rubocop is kicking my butt.

Chef docs: https://docs.chef.io/dsl_recipe.html#value-for-platform-family

Any thoughts for a ruby newb?

 12 tcp_ports = value_for_platform_family(
 13   ['debian', 'rhel'] => [22, 443, 4172, 60443],
 14   'windows' => [443, 3389, 4172, 60443]
 15 )

And the rubocop error is

recipes/recipe.rb:13:3: C: Style/WordArray: Use %w or %W for an array of words.
  ['debian', 'rhel'] => [22, 443, 4172, 60443],
  ^^^^^^^^^^^^^^^^^^

Answer 1

When working with collections Rubocop adds:

Prefer %w to the literal array syntax when you need an array of words (non-empty strings without spaces and special characters in them). Apply this rule only to arrays with two or more elements.

# bad
STATES = ['draft', 'open', 'closed']

# good
STATES = %w[draft open closed]

Notice, this is bad from the view point in the Ruby Style Guide, but still working code.

So your example would be:

%w[debian rhel]