ruby on rails - Safe way to initialize attributes from a yaml or hash -

in initialize method trying write can pass either hash or yaml object init attribute values.

my yaml file looks like:

defaults: &defaults   host: localhost   port: 4565   timeout: 3   development:   <<: *defaults  test:   <<: *defaults  staging:   <<: *defaults  production:   <<: *defaults 

i have this:

def initialize(options)    if options.respond_to? "has_key" && options.has_key? "defaults"     config = options["defaults"]   else     config = options   end    @hostname = config[:hostname]   @port = config[:port]   @timeout = config[:timeout]  end 

this not working me, i'm getting error:

unexpected tstring_beg, expecting keyword_then or ';' or '\n'       if options.respond_to? "has_key" && options.has_key? "defaults" 

1. how can load correct environment also? (test, development, production)
2. how can throw error if 1 of keys isn't present? (or @ least major ones need sure hostname, port)

you need parenthesize if statement.

if options.respond_to?("has_key") && options.has_key?("defaults")