我完全被封锁了。
请参阅此代码:
# user.rb
class User < ActiveRecord::Base
has_one :address
accepts_nested_attributes_for :address
validates_associated :address, :if => Proc.new {|u| u.addressable? }
end
# address.rb
class Address < ActiveRecord::Base
belongs_to :user
validates_presence_of :address_text
end
# user_test.rb
require File.dirname(__FILE__) + '/../test_helper'
class UserTest < ActiveSupport::TestCase
setup { }
test "address validation is not ran w update attributes and anaf" do
@user = User.create!
@user.build_address
assert_nothing_raised do
@user.update_attributes!(:addressable => false, :address_attributes => {:address => "test"})
end
end
test "address validation w update_attributes and anaf" do
@user = User.create!
@user.build_address
@user.save
assert_raise ActiveRecord::RecordInvalid do
@user.update_attributes!(:addressable => true, :address_attributes => {:address => "test"})
end
end
end
第一次测试将失败。
用户模型验证关联的地址模型,但只有当标志为真时才应该。在实践中,它始终如一。
发生了什么事?
答案 0 :(得分:1)
实际上我遇到了更复杂的现实世界场景的问题,这些问题只能通过以下方式解决:
def validate_associated_records_for_address
self.addressable? ? validate_single_association(User.reflect_on_association(:address)) : nil
end
这使得anaf的强制性验证只能在我们想要的条件下运行(可寻址?是真的)。
现在不需要validates_associated...:if
。