From: David Vallner <david@...>
Date: 2006-11-14T07:20:01+09:00
Subject: Re: undefined method `string'

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Comfort Eagle wrote:
> Why does this work:
>=20
> require 'rubygems'
> require 'rubyful_soup'
>=20
> sourceFile =3D 'lists.php'
> desFile =3D 'parsedtext.txt'
>=20
>=20
> open(sourceFile).each { |x|
>   soup =3D BeautifulSoup.new(x)
>   puts soup.a
>   }
>=20
> but adding .string a la:
>=20
> require 'rubygems'
> require 'rubyful_soup'
>=20
> sourceFile =3D 'lists.php'
> desFile =3D 'parsedtext.txt'
>=20
>=20
> open(sourceFile).each { |x|
>   soup =3D BeautifulSoup.new(x)
>   puts soup.a.string
>   }
>=20
> results in:
> undefined method `string' for nil:NilClass (NoMethodError) ??
>=20

Because soup.a is nil?
As the interpreter obediently informs you of.

"puts soup.a" works because to_s is defined on nil to return the empty
string.

David Vallner


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