Question

I’m trying to read some JSON data from the Tumblr API.

I’m using the Hashie gem to read the values as object properties. This should make reading easier/cleaner.

it turns something like this:

data['post']['title']

into this:

data.post.title

Unfortunately there are some keys showing up with a ‘-‘ as divider between like this:

regular-title: Mijn eerste post
format: html
regular-body: <p>post</p>

therefore i cannot use post.regular-title. Is there a way to replace all the minus(-) symbols into underscores(_)?

Answer 1

This will do it:

def convert_object(data)
  case data
    when Hash
      data.inject({}) do |h,(k,v)|
        h[(k.respond_to?(:tr) ? k.tr('-', '_') : k)] = convert_object(v)
        h
      end
    when Array
      data.map { |i| convert_object(i) }
    else
      data
  end
end

You can use it like this:

convert_object(JSON.parse('{"something-here":"value","otherkey":{"other-key":"value-value"}}'))