comparison.rb

original = Fech::Filing.new(764200)
original.download

amendment = Fech::Filing.new(764828)
amendment.download

comparison = Fech::Comparison.new(amendment, original)

p comparison.summary
# {:date_signed=>"20120207"}

comparison.schedule('sa').each do |row|
  p [row[:transaction_id], 
     row[:contributor_first_name], 
     row[:contributor_last_name], 
     row[:contributor_organization_name], 
     row[:contribution_amount]
    ]
end

comparison_output.rb

["SA11AI.4969", "Jesse", "Rogers", nil, "125000.00"]
["SA11AI.4971", "Melinda", "Rogers", nil, "125000.00"]