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我有一个模型 Profile，它属于 Person 并且 Person 有很多电子邮件。有趣的是，当我创建个人资料（基于nested_form gem 的一个大表单）并填写错误的电子邮件时，单击“创建”后验证将返回错误消息，但是当我再次单击“创建”时，表单没有任何更改我得到“找不到 ID = 1002 的个人资料 ID =”。不知何故，人是在没有个人资料的情况下创建的。如果关联的电子邮件错误，我不想创建 Person。我正在尝试不同的验证来避免此错误，例如 validates_associated 等。这是我的代码： 

class Profile < ActiveRecord::Base

  belongs_to :contact_person
  belongs_to :person, validate: true    

  accepts_nested_attributes_for :person, allow_destroy: true

  validates_presence_of  :person   

  delegate :gender, :title, :first_name, :last_name, :birthday, :place_of_birth, :name, :company, :company_name, :age, :web_profiles, :main_email, :main_phone_number, :main_address, :main_web_profile, to: :person  
end

class Person < ActiveRecord::Base

  GENDER = { male: 2, female: 1}
  TITLE = { dr: 0, prof: 1, prof_dr: 2 }

  has_one     :profile
  has_many    :emails, validate: true,                class_name: 'ContactType::Email'
  has_many    :phone_numbers, validate: true,         class_name: "ContactType::PhoneNumber"
  has_many    :web_profiles, validate: true,          class_name: "ContactType::WebProfile"

  validates_presence_of :first_name, :last_name  

  accepts_nested_attributes_for :emails, allow_destroy: true
  accepts_nested_attributes_for :phone_numbers, allow_destroy: true
  accepts_nested_attributes_for :web_profiles, allow_destroy: true
end

class ContactType::Email < ActiveRecord::Base

  EMAIL_TYPE = { work: 0, private: 1, other: 2 }

  belongs_to :person, validate: true  

  validates_format_of :address, :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i, message: I18n.t('simple_form.error.address_email')

  def email_type
    EMAIL_TYPE.key(read_attribute(:email_type))
  end

  def email_type=(t)
    write_attribute(:email_type, EMAIL_TYPE[t.to_sym])
  end

end

提前感谢您的任何建议。

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