Matcher pattern

gistfile1.rb

invoice = Invoice.last
invoice.load_order_matches.with_score_gt(70) # <= LoadOrderMatchesCollection
best_match = invoice.load_order_matches.best # <= LoadOrderMatch
best_match.score # <= 97
best_match.invoice # <= Invoice
best_match.load_order # <= LoadOrder
best_match.similarities # <= [ amount: 500 ]

class Invoice
  extend Matchability
  
  matchable_with :load_order
end

class LoadOrder
  extend Matchability
  
  matchable_with :invoice
end

class InvoiceLoadOrderMatch < ScoreMatch
  attr_reader :invoice
  attr_reader :load_order
  
  def score
    # calcuate score here
  end
  
  def similarities
    # 
  end
end