Class: Comma::DataExtractor

Inherits:
Extractor show all
Defined in:
lib/comma/extractors.rb

Instance Method Summary collapse

Methods inherited from Extractor

#id, #initialize, #results

Constructor Details

This class inherits a constructor from Comma::Extractor

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(sym, *args, &block) ⇒ Object 



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# File 'lib/comma/extractors.rb', line 44

def method_missing(sym, *args, &block)
  if args.blank?
    result = block ? yield(@instance.send(sym)) : @instance.send(sym)
    @results << result.to_s
  end

  args.each do |arg|
    case arg
    when Hash
      arg.each do |k, v|
        if block
          @results << (@instance.send(sym).nil? ? '' : yield(@instance.send(sym).send(k)).to_s )
        else
          @results << (@instance.send(sym).nil? ? '' : @instance.send(sym).send(k).to_s )
        end
      end
    when Symbol
      if block
        @results << (@instance.send(sym).nil? ? '' : yield(@instance.send(sym).send(arg)).to_s)
      else
        @results << ( @instance.send(sym).nil? ? '' : @instance.send(sym).send(arg).to_s )
      end
    when String
      @results << (block ? yield(@instance.send(sym)) : @instance.send(sym)).to_s
    else
      raise "Unknown data symbol #{arg.inspect}"
    end
  end
end