From: Danny Tatom <dannytatom@...>
Date: 2009-05-29T09:30:04+09:00
Subject: Defining a method to select values from a hash.

I'm terribly confused with this, and can't seem to figure it out (or
explain it).

Using HTTParty, I have a method that grabs some XML and returns it as a
hash:

  def check(data)
    @results = self.class.post('/checkDocument', :query => {:key =>
@key,
                                                :data => data})
  end

  def errors
    errors = @results['results']['error']
  end

An example of the hash it returns:
>> atd.check("I'm realy hating this wether")
=> [{"suggestions"=>{"option"=>["really", "ready", "real", "relay",
"realty"]}, "precontext"=>"I'm", "type"=>"spelling", "string"=>"realy",
"description"=>"Spelling"}, {"suggestions"=>{"option"=>["weather",
"whether"]},
"url"=>"http://service.afterthedeadline.com/info.slp?text=wether",
"precontext"=>"this", "type"=>"spelling", "string"=>"wether",
"description"=>"Did you mean..."}]

Now calling the .errors method, I can get the string from each one like
this:
>> atd.errors.each { |error| p error['string'] }
"realy"
"wether"

What I'd like to do is write a method for string, so that
atd.errors.each { |error| p.error.string } would result in the same
thing.  For the life of me, I can't figure out how to do that. :/

The other problem I'm having with the way I'm doing it now is that
calling .errors.each when there's only one error sent back gives me a
"can't convert String into Integer" error.

So, if anyone could point me in the right direction, I'd appreciate it.
:)
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