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| class CreditCardController < ApplicationController | |
| def create | |
| respond_with CreditCardCreator.new(params) | |
| end | |
| end | |
| class Grouper::Responder | |
| delegate :errors, to: :resource | |
| def resource | |
| raise NotImplementedError | |
| end | |
| def to_json | |
| call | |
| resource | |
| end | |
| end | |
| class CreditCardCreator < Grouper::Responder | |
| def initialize(params) | |
| @params = params | |
| end | |
| def resource | |
| @resource ||= CreditCard.new(@params) | |
| end | |
| def call | |
| resource.save | |
| ... | |
| response = Stripe.create_card(resource) | |
| unless response.success? | |
| errors << response.error_message | |
| end | |
| end | |
| end |
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