CODEWITHSUNDEEP
ruby-on-railsrubyjsonhash
Mark Boulder
Mark Boulder

Reputation: 14277

Pretty, Rubified JSON keys

What's the best way to get pretty, Rubified hash keys?

Ie. someKey becomes some_key.

  1. Hashie::Trash -- impossible without first defining each key, ie. property :some_key, from: :someKey -- not very pretty.

  2. https://github.com/tcocca/rash -- unfortunately breaks Hashie::Extensions::DeepFetch which I intend to use later on.

  3. Rails ActiveSupport's underscore -- unclear how to apply this to my use case.

Live demo app: http://runnable.com/U-QJCIFvY2RGWL9B/pretty-json-keys

class MainController < ApplicationController
  def index
    @json_text = <<END
      ...
    END

    response = JSON.parse(@json_text)['products']

    @products = []
    response.each do |product|
      @products << product['salePrice']

      # Seeking the best way to make this say:

      # @products << product['sale_price']
    end
  end
end

Upvotes: 0

Views: 171

Answers (1)

Gene
Gene

Reputation: 46960

Well, you can always translate to a new hash:

def self.prettify(x)
  x.is_a?(Hash) ? Hash[ x.map{|k,v| [k.underscore, prettify(v)]} ] :
  x.is_a?(Array) ? x.map{|v| prettify(v) } : x
end

pretty_json_hash = prettify(JSON.parse(@json_text))

NB: Success with Rails will be hard to come by if you can't write code at this level.

Upvotes: 1

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