Method: Client#recommend_invoice_assignments_for

Defined in:
app/models/client.rb

#recommend_invoice_assignments_for(amount) ⇒ Object

Returns an array of unsaved InvoicePayment objects, with unset payment_ids, and ‘recommended’ amounts. If the provided amount exactly equals an outstanding invoice’s amount, we return a InvoicePayment for the oldest such matching invoice. Otherwise, we start applying the amount to invoices in ascending order by issued_date.



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# File 'app/models/client.rb', line 105

def recommend_invoice_assignments_for(amount)
  amount = amount.to_money

  invs = unpaid_invoices(
    :all,
    # Using this order forces the closest-amount match to be above anything else, followed by date sorting
    :order => '(amount_outstanding_in_cents = %d) DESC, issued_on ASC, created_at ASC' % amount.cents
  )

  unassigned_outstanding = invs.inject(Money.new(0)){|total, inv| total + inv.amount_outstanding}
  
  invs.collect{ |inv|
    if amount > 0 and unassigned_outstanding > 0
      assignment = (amount >= inv.amount_outstanding) ? 
          inv.amount_outstanding : 
          amount
      
      unassigned_outstanding -= assignment
      amount  -= assignment
      
      InvoicePayment.new :invoice => inv, :amount => assignment if assignment > 0
    end
  }.compact
end