Use YAML with variables

Question

Are variables within YAML files possible? For example:

theme:
  name: default
  css_path: compiled/themes/$theme.name
  layout_path: themes/$theme.name
         


        

Answer 1

if your requirement is like parsing an replacing multiple variable and then use it as a hash/or anything then you can do something like this

require 'yaml'
require 'json'
yaml = YAML.load_file("xxxx.yaml")
blueprint = yaml.to_json % { var_a: "xxxx", var_b: "xxxx"}
hash = JSON.parse(blueprint)

inside the yaml just put variables like this

"%{var_a}"