Question

我正在使用Stripe和Ruby on Rails 3.2构建一个小概念证明。到目前为止，我已经看过关于如何在RoR应用程序中实现Stripe的Railscast，它运行得非常好。

我按照RailsCast #288 Billing with Stripe构建了我的应用。现在，我的用户可以添加和编辑他们的信用卡，甚至可以注册到课程，并在完成后对他们的信用卡收费。

现在我一直在测试Stripe的众多test credit cards，我想在引发时捕获尽可能多的异常。我在注册模型中使用Stripe的example错误，如下所示：

class Registration < ActiveRecord::Base

  belongs_to :user
  belongs_to :session

  attr_accessible :session_id, :user_id, :session, :user, :stripe_payment_id
  validates :user_id, :uniqueness => {:scope => :session_id}

  def save_with_payment(user, stripe_card_token)
    if valid?
      if user.stripe_customer_id.present?
        charge = Stripe::Charge.create(
            :customer => user.stripe_customer_id,
            :amount => self.session.price.to_i * 100,
            :description => "Registration for #{self.session.name} (Id:#{self.session.id})",
            :currency => 'cad'
        )
      else
        customer = Stripe::Customer.create(
            :email => user.email,
            :card => stripe_card_token,
            :description => user.name
        )
        charge = Stripe::Charge.create(
            :customer => customer.id,
            :amount => self.session.price.to_i * 100,
            :description => "Registration for #{self.session.name} (Id:#{self.session.id})",
            :currency => 'cad'
        )
        user.update_attribute(:stripe_customer_id, customer.id)
      end
      self.stripe_payment_id = charge.id
      save!
    end
  rescue Stripe::CardError => e
    body = e.json_body
    err  = body[:error]
    logger.debug "Status is: #{e.http_status}"
    logger.debug "Type is: #{err[:type]}"
    logger.debug "Code is: #{err[:code]}"
    logger.debug "Param is: #{err[:param]}"
    logger.debug "Message is: #{err[:message]}"
  rescue Stripe::InvalidRequestError => e
    # Invalid parameters were supplied to Stripe's API
  rescue Stripe::AuthenticationError => e
    # Authentication with Stripe's API failed
    # (maybe you changed API keys recently)
  rescue Stripe::APIConnectionError => e
    # Network communication with Stripe failed
  rescue Stripe::StripeError => e
    # Display a very generic error to the user, and maybe send
    # yourself an email
  rescue => e
    # Something else happened, completely unrelated to Stripe
  end
end

我现在只是从错误中解救出来并且在一个人被提出之后并没有真正采取行动，最终我想阻止当前的类注册发生并重定向用户闪存错误。

我已经阅读了rescure_from，但我不确定处理所有可能的Stripe错误的最佳方法是什么。我知道不能从模型重定向，你会如何处理这个问题？

这是我的注册控制器：

class Classroom::RegistrationsController < ApplicationController
  before_filter :authenticate_user!

  def new
    if params[:session_id]
      @session = Session.find(params[:session_id])
      @registration = Registration.new(user: current_user, session: @session)
    else
      flash[:error] = "Course session is required"
    end

    rescue ActiveRecord::RecordNotFound
      render file: 'public/404', status: :not_found

  end

  def create
    if params[:session_id]
      @session = Session.find(params[:session_id])
      @registration = Registration.new(user: current_user, session: @session)
      if @registration.save_with_payment(current_user, params[:stripe_card_token])
        flash[:notice] = "Course registration saved with success."
        logger.debug "Course registration saved with success."
        mixpanel.track 'Registered to a session', { :distinct_id => current_user.id,
                                           :id => @session.id,
                                           'Name' => @session.name,
                                           'Description' => @session.description,
                                           'Course' => @session.course.name
        }
        mixpanel.increment current_user.id, { :'Sessions Registered' => 1}
        mixpanel.track_charge(current_user.id, @session.price.to_i)
      else
        flash[:error] = "There was a problem saving the registration."
        logger.debug "There was a problem saving the registration."
      end
      redirect_to root_path
    else
      flash[:error] = "Session required."
      redirect_to root_path
    end
  end

end

感谢您花时间回复，非常感谢！

弗朗西斯

Answer 1

您是否考虑将实际的Stripe调用放在自定义验证器中？

http://apidock.com/rails/ActiveModel/Validations/ClassMethods/validate

通过这种方式，您可以使用类似以下内容的

向对象添加错误

这背后的逻辑是你只想将成功的交易保存为'交易'，所以为什么不把条纹费用放在验证器中。

validate :card_validation

def card_validation

    begin
        charge = Stripe::Charge.create(
           :customer => user.stripe_customer_id,
           :amount => self.session.price.to_i * 100,
           :description => "Registration for #{self.session.name} (Id:#{self.session.id})",
           :currency => 'cad'
        )
        etc etc
    rescue => e
      errors.add(:credit_card, e.message)
      #Then you might have a model to log the transaction error.
      Error.create(charge, customer)
    end

end

通过这种方式，您可以处理错误，就像从未保存的条目中获得的任何其他错误一样，而不是提供空白错误消息，或者必须处理Stripe中的每个最后错误。

class Classroom::RegistrationsController < ApplicationController
  before_filter :authenticate_user!

  def create
    if params[:session_id]
      @session = Session.find(params[:session_id])

      params[:registration][:user] = current_user
      params[:registration][:session] = @session
      params[:registration][:stripe_card_token] = params[:stripe_card_token]

      @registration = Registration.new(params[:registration])
      respond_with(@registration) do |format|
        if @registration.save
          format.html {redirect_to root_path, :notice => "SOMETHING HERE TO TELL THEM SUC"}
        else
          format.html {render}
        end
      end
    else
      respond_with do |format|
        format.html {redirect_to root_path, :error => "SOMETHING HERE TO TELL THEM GET SESSION"}
      end
    end
  end

end

在哪里以及如何处理Stripe异常？

1 个答案: