Question

假设我有一个Person模型和地址模型：

    class Address < ActiveRecord::Base
     belongs_to :person
     enum addresstype: {"primary" => 0, "bank" => 1}
    end

    class Person < ActiveRecord::Base
     has_many :addresses
     accepts_nested_attributes_for :addresses, allow_destroy: true
    end

如何验证人员模型是否存在每人至少一个主要地址和一个银行地址？

Answer 1

您可以编写自定义验证程序。根据这一点，应该有所作为：

class Person < ActiveRecord::Base
  has_many :addresses
  accepts_nested_attributes_for :addresses, allow_destroy: true

  validate :minimum_address_requirements_met

  def minimum_address_requirements_met
    errors.add :addresses, 'must include a primary address' if addresses.primary.empty?
    errors.add :addresses, 'must include a bank address' if addresses.bank.empty?
  end
end

验证has_many关联的存在

1 个答案: