if @observed_assignment
  # Make sure the observed input field looks properly formatted:
  observed_column_id = options_for_column(@observed_column)[:id]
  
  page[observed_column_id].value = @observed_assignment.amount.to_s
  
  page.replace_html(
    "%s_outstanding" % observed_column_id,
    h_money(
      invoice_amount_outstanding_for(@observed_invoice, @record.id, @observed_assignment.amount )
    )
  )
else
  # Make sure the input field looks properly formatted:
  page[amount_field_id].value = @record.amount.to_s if @record.amount_in_cents_changed?

  # Now let's render these guessed assignments
  page.replace(
    'record_invoice_assignment_%s' % @record.id , 
    payment_assignments_form_column(@record) 
  )
end

# Notate the unallocated_amount :
page.replace_html(
  amount_unallocated_field_id, 
  :text => (@record.amount) ? h_money(@record.amount_unallocated) : t(:enter_a_payment_amount)
)