From: Paul Duncan <pabs@...>
Date: 2006-09-03T05:19:01+09:00
Subject: Re: How can I do this without eval...

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* J2M (james2mccarthy@gmail.com) wrote:
>=20
> Jan Svitok wrote:
>=20
> > model =3D const_get(model_name.to_s.capitalize)

This might be more appropriate:

  model_class =3D const_get(model_name.to_s.classify)

Classify will take care of things that capitalize misses, like
underscores and extraneous plurals.  Take a look at the following
output:

  # test strings and test methods
  strings =3D %w{blog_post layers magazine_subscribers}
  methods =3D %w{capitalize classify}.map { |m| m.intern }

  # iterate over test strings and handle each one
  puts strings.map { |str|
    "'#{str}'\n" << methods.map { |meth|=20
      "  #{meth}:\t'#{str.send(meth)}'"=20
    }.join("\n")
  }

Produces the following:

  'blog_post'
    capitalize:   'Blog_post'
    classify:     'BlogPost'
  'layers'
    capitalize:   'Layers'
    classify:     'Layer'
  'magazine_subscribers'
    capitalize:   'Magazine_subscribers'
    classify:     'MagazineSubscriber'

Hope that helps...

--=20
Paul Duncan <pabs@pablotron.org>        pabs in #ruby-lang (OPN IRC)
http://www.pablotron.org/               OpenPGP Key ID: 0x82C29562

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