FactoryGirl从多态关联中的另一个工厂检索属性

多态关联不需要显式 association 在FactoryGirl申报。以下内容已验证并将有效:

FactoryGirl.define do
  factory :board do
    boardable factory: :artist
    name { boardable.name }
  end
end

就你的 Board 的名称,请确保将属性值括在括号中,否则FactoryGirl可能会将其视为特征:) boardable_type 您的属性 板 将自动设置为 boardable 的类,所以它甚至不需要声明。

您可以使用before:create。像这样的

FactoryGirl.define do
  factory :board do
    ...
    before(:create) do |board, evaluator|
      # create artist factory here to associate board to
      # example below that isn't polymorphic but you get the idea
      FactoryGirl.create(:artist, name: "foo").boards << board
    end
  end
end