自动加载常量时检测到循环依赖

问题描述：

我将 Rails 从 3.1.2 版(运行良好)升级到 4.0，但遇到以下错误:

I upgraded Rails from version 3.1.2 (which worked fine) to 4.0, and got stuck with the following error:

circular dependency detected while autoloading constant Foo

我创建了一个类 ProductFactory，我在其中实例化了不同的模型.例如:

I created a class ProductFactory, where I instantiate different models. For example:

p = Foo.new(params)

模型 "Foo" 并不总是一个 ActiveRecord.有人能帮我解决这个问题吗?

The model "Foo" is not always an ActiveRecord. Could anyone help me with this issue?

答

这种问题在你更换 Rails 版本时经常发生.您可能没有按正确的顺序更新宝石.

This kind of issues often happen when you change the version of Rails. You maybe didnt update the gems on the right order.