class App.Customer extends Spine.Model
  @configure 'Customer', 'firstName', 'lastName'
  @extend Spine.Model.Ajax

  @hasMany 'orders', 'App.Order'

class App.Order extends Spine.Model
  @configure 'Order', 'order_number', 'customer_id'
  @extend Spine.Model.Ajax

  @belongsTo 'customer', 'App.Customer'

@::[name] = (value) ->
  association(@).update(value) if value?
  association(@).exists()