Question

正如Anton指出的那样（感谢Anton！）我的问题是测试中的关联缓存，看起来我在Factory中正确创建了nested_attribute。正确的语法是：

Factory.define :job do |f|
  ...
  f.vehicles_attributes [{:vin => "1", :model => "ford", :make => "escort"},{:vin => "1", :model => "ford", :make => "escort" }]
end

我在我的工作模型中使用accepts_nested__attributes_for，并且在我每次更换模型后几乎失去我的弹珠“夹具潜水”时，我正试图迁移到工厂女孩。

我在下面发布了一堆代码，但我的问题很简单：

如何使用工厂创建nested_attributes？

我可以使用下面的代码创建一个Job实例，但我无法在单元测试中创建创建工具。没有f.vehicles_attributes...我的作业测试失败验证。

我的单元测试产生以下结果：

  test "factory" do
    job = Factory(:job)
    assert(job.valid?)  # => true
    assert(job.vehicles.first.valid?) # => true
    vehicle = Factory(:vehicle)
    assert(vehicle.job.vehicles.size == 1) # => true
    assert_equal(vehicle.job.vehicles.first.vin, "2") # => FALSE.  <"1"> expected but was <"2">
  end

Factory.define :job do |f|
  ...
  f.vehicles_attributes [:vin => "1", :model => "ford", :make => "escort" ]
end

Factory.define :vehicle do |f|
  f.vin "2"
  f.model "ford"
  f.make "escort"
  f.association :job
end

class Job < ActiveRecord::Base
  has_many :vehicles, :dependent => :destroy
  validate :job_must_have_at_least_one_vehicle
  accepts_nested_attributes_for :vehicles, :allow_destroy => :true, :reject_if => proc { |vehicle_attributes| Job.insufficient_vehicle_input?(vehicle_attributes) }

  def job_must_have_at_least_one_vehicle
    errors.add(:vehicles, "need to be added") if self.vehicles.empty?
  end

  def self.insufficient_vehicle_input?(vehicle_attributes)
    vehicle_property_keys = vehicle_attributes.keys
    vehicle_property_keys.delete('_delete')
    vehicle_property_keys.delete('is_operational')
    vehicle_property_keys.delete('has_keys')
    vehicle_property_keys.each do |attribute_to_validate|
      if(!vehicle_attributes[attribute_to_validate].nil? && !vehicle_attributes[attribute_to_validate].empty?)
        return false
      end
    end
    return true
  end
end

Answer 1

关于关联缓存。

以下是它的工作原理：
1. Factory(:vehicle)构建vehicle对象并创建job记录
2.之后，它填充vehicle.job_id并保存

但vehicle.job指出了步骤1中的job对象所以，您需要的只是重新加载job：

vehicle = Factory(:vehicle)
vehicle.job.reload.vehicles.size # => 2

如何使用accepts_nested_attributes_for创建RoR Factory关联？

1 个答案: