Ruby on rails 无法从关联中获取原始对象

我有以下代码：

account = Account.find(1)
customer = ThirdPartyAPI.retrieve("123456")
account.customers.import(customer)

以下是导入方法：

class Customer < ActiveRecord::Base
   belongs_to :account

   def self.import(customer)
      # I need to get the Account ID. 
      # Have tried `self.account.id`, but it throws this:
      # NoMethodError: undefined method `account'
   end
end

---

您是否正在尝试将客户添加到帐户的客户阵列中？如果是这样，您可能希望这样做：

account.customers << customer

您无法从类方法访问self.account.id，因为您没有引用类帐户的特定实例。

从第三方API获得的客户对象不是customer中的持久化对象。没有身份证

您可以将其视为具有customer属性的散列。然后您需要做的就是保存它，并为它分配一个帐户id作为帐户对象

def self.import(customer_attr, account)
  attr = customer_attr.merge account: account
  customer = create attr
end

def self.import(customer_attr, account)
  attr = customer_attr.merge account: account
  customer = create attr
end