json.extract! @customer, :id, :nick_name, :credit ,:credit_limit, :created_at, :updated_at, :status json.customer_debiting do debiting = 0 @customer.credits.activos.each do |credit| debiting = debiting + credit.rest end json.customer_debiting debiting end json.customer_payment do payment = CreditPayment.where(:customer_id => @customer.id).order("date_payment DESC").first if !payment.blank? json.customer_payment payment.date_payment.strftime("%d/%m/%Y") end end