Question

到目前为止，我有这个......

class MembersController < ApplicationController

  rescue_from Mailchimp::Exception::DataException,
    Mailchimp::Exception::APIKeyError,
    Mailchimp::Exception::NotFound,
    Mailchimp::Exception::Duplicate,
    Mailchimp::Exception::MissingField,
    Mailchimp::Exception::BadRequest,
    Mailchimp::Exception::UnknownAttribute,
    Mailchimp::Exception::MissingId,
    with: :error

  def error(e)

    puts 'Message: ' + e.message
    puts 'Type: ' + e.type
    puts 'Title: ' + e.title

    e.errors.each do |error|
      puts 'Field: ' + error['field']
      puts 'Message: ' + error['message']
    end if e.errors

    # Respond to the HTTP POST request by passing the errors
    return render_with(500, e.message, e.errors)

  end

  private

  def render_with(status_code, message, errors='none')

    if errors == 'none'
      status = 'success'
      success = true
    else
      status = 'error'
      success = false
    end

    render json: {
      :status => status,
      :success => success,
      :message => message,
      :errors => errors,
      :params => params.as_json
    },
    status: status_code

  end

end

为了让它干涸，我已经做到了......

class MembersController < ApplicationController

  mailchimpExceptions = [
    'DataException',
    'APIKeyError',
    'NotFound',
    'Duplicate',
    'MissingField',
    'BadRequest',
    'UnknownAttribute',
    'MissingId'
  ]

  exceptions = Array.new

  mailchimpExceptions.each do |exception|
    exceptions << "Mailchimp::Exception::#{exception}"
  end

  rescue_from *exceptions, with: :error

  def error(e)

    puts 'Message: ' + e.message
    puts 'Type: ' + e.type
    puts 'Title: ' + e.title

    e.errors.each do |error|
      puts 'Field: ' + error['field']
      puts 'Message: ' + error['message']
    end if e.errors

    # Respond to the HTTP POST request by passing the errors
    return render_with(500, e.message, e.errors)

  end

  private

  def render_with(status_code, message, errors='none')

    if errors == 'none'
      status = 'success'
      success = true
    else
      status = 'error'
      success = false
    end

    render json: {
      :status => status,
      :success => success,
      :message => message,
      :errors => errors,
      :params => params.as_json
    },
    status: status_code

  end

end

我想知道是否所有异常都可以在一个类下进行，因此只有一个类被调用为rescue_from MailchimpExceptions, with: :error。 This answer by mgolubitsky表明这是可能的，但我不知道如何去做。

我正在使用gem＆＃39; mailchimp_api_v3＆＃39;。

Answer 1

我不知道mailchimp本身，但我一般可以建议如何正确干燥：

EXCEPTIONS = %w|
  DataException
  APIKeyError
  NotFound
  Duplicate
  MissingField
  BadRequest
  UnknownAttribute
  MissingId|.map { |e| Mailchimp::Exception.const_get(e) }

rescue_from *EXCEPTIONS, with: :error

或rescue_from 所有异常，一次在Mailchimp::Exception中定义：

EXCEPTIONS = Mailchimp::Exception.constants.map do |e|
  Mailchimp::Exception.const_get(e)
end.select { |e| e.is_a?(Class) && e < Exception }

Answer 2

查看https://github.com/dominicsayers/mailchimp_api_v3#exception-handling

它说：

所有异常都是Mailchimp :: Exception的子类

尝试rescue_from Mailchimp::Exception, with: :error

如何从一个父类继承多个异常类？

2 个答案: