Ruby hash to JavaScript

Question

I have a Ruby hash which is passed to a hidden field. How do I extract this hash into JavaScript arrays that I can work with? I need to access the key/value pairs in JavaScript.

Answer 1

Use my_awesome_ruby_hash.to_json and then you can simply either eval it in js or use parseJSON . You might need to require 'json' (not in Rails).

Answer 2

Ruby code:

state = { 'Waiting' => { name: 'Waiting now', color: 'btn-default' },
'Trying' => { name: 'Trying now', color: 'btn-danger' },
'Answered' => { name: 'Answered now', color: 'btn-success' } }

javascript code:

var state = JSON.parse('#{raw(state.to_json)}');