工厂女孩在安全回调之前

Question

我有一个非常具体的用例。我需要每次保存工厂实例“deleted_user”以在“users”表中为其分配ID，以便“恢复”工作。

class DeletedUser < ActiveRecord::Base
  def restore
   User.create!(attributes) # ID here is included and is important to be. We want a user with the same ID that it was before deleting!
  end
end

FactoryGirl.register :deleted_user do
  # need to plug before save and assign ID that never will be used for user ID.
end

并且有不同的方法来持久化工厂实例：

1. FactoryGirl.create :deleted_user
2. FactoryGirl.create_list(:deleted_user)
3. FactoryGirl.build(:deleted_user).save
4. FactoryGirl.build(:deleted_user).save!
5. FactoryGirl.build_list(:deleted_user, 2).map(&:save)
6. FactoryGirl.build_list(:deleted_user, 2).map(&:save!)

正如我看到Factory Girl没有之前的保存回调但只有before(:create)和on_creation，但它们仅针对上述调用的1, 2触发。

你知道如何优雅地使用自定义before(:save)回调吗？

注意：我的FactoryGirl是4.5.0

Answer 1

您也可以将您的逻辑包含在after(:build)中，因为在您调用.save之前它不会触及数据库。