Comments on: Convert your Hash keys to object properties in Ruby

By: Dan

Dan — Tue, 16 Aug 2011 17:52:45 +0000

hash_extension is a gem that does this. It also provides “setter” methods as well as ActiveRecord finders: http://enterpriserails.rubyforge.org/hash_extension/

By: Jesse Wolgamott

Jesse Wolgamott — Thu, 31 Mar 2011 16:19:25 +0000

Hey one suggestion: also implement to respond_to? if you’re doing method_missing. I saw this in this stack-overflow question and think it makes a lot of sense: http://stackoverflow.com/questions/291132/method-missing-gotchas-in-ruby

By: kerry

kerry — Sat, 30 Oct 2010 15:12:53 +0000

Hashes can contain any type as the key, that line allows it to work with hashes that have other types as keys (strings, for instance).

By: zhenya1001

zhenya1001 — Sat, 30 Oct 2010 04:56:39 +0000

Great idea, but
why do you need this line?
self.each { |k,v| return v if k.to_s.to_sym == name }

if you have
return self[name] if key? name

By: Kenan

Kenan — Sat, 08 May 2010 05:32:57 +0000

Hey, thanks so much. I was not looking forward to figuring out how to do this (OpenStruct isn’t recursive and wouldn’t apply to nested stuff). But this did the trick for me. Thanks for saving me some time!

By: kerry

kerry — Wed, 05 May 2010 19:51:14 +0000

When dealing with json feeds (which is what I am using this for) OpenStruct is insufficient as there are nested hashes. So you would have to call it for element. ie.

Given:
my_hash = { :a => :b, :c => {:d => :e, :f => :g} }

using openstruct you would have to say openstruct.c[:d] to get :e

with my solution you can simply say:

my_hash.c.d

By: kerry

kerry — Wed, 05 May 2010 19:27:52 +0000

Thanks for the tip!

I did not know of that class.

Sometimes though, you may not have the ability to wrap an object to access the properties or you don’t want to do it over and over again.

By: Ajasja Ljubetič

Ajasja Ljubetič — Wed, 05 May 2010 18:58:04 +0000

Why not just use http://ruby-doc.org/stdlib/libdoc/ostruct/rdoc/classes/OpenStruct.html ?

By: kerry

kerry — Mon, 26 Apr 2010 15:57:22 +0000

yea, Groovy has some nice features. I have been using JRuby lately at work though.

By: Chad O

Chad O — Sat, 24 Apr 2010 20:12:19 +0000

Thanks!

I’m a Ruby (and programming in general) n00b, so this seems fantastic to me! I’ll have to ask my coworkers what they think and get some more experienced feedback.

But I went to a presentation on REST with Groovy, and was started to discover that Ruby didn’t match up. So good work!