Accessing a Ruby hash with a variable as the key

Question

If I had the following ruby hash:

environments = {
   'testing' =>  '11.22.33.44',
   'production' => '55.66.77.88'
}

How would I access parts of the above hash? An example below as to what I am trying to achieve.

current_environment = 'testing'
"rsync -ar root@#{environments[#{testing}]}:/htdocs/"

Answer 1

You would use brackets:

environments = {
   'testing' =>  '11.22.33.44',
   'production' => '55.66.77.88'
}
myString = 'testing'
environments[myString] # => '11.22.33.44'