[Read / write YAML file]

read_write_yaml.rb

require 'json'
require 'openstruct'
require 'yaml'

FILE_PATH = '/path/to/file.yml'

### LOAD YAML FILE AS A YAML OBJECT ###
yaml = YAML.load_file(FILE_PATH)                                            # with string keys
yaml = JSON.parse(YAML.load_file(FILE_PATH).to_json, symbolize_names: true) # with symbol keys

### LOAD YAML FILE AS AN OPENSTRUCT ###
yaml = JSON.parse(YAML.load_file(FILE_PATH).to_json, object_class: OpenStruct)