问题描述
我在Rails引擎中有一个请求规范。呈现的视图调用路线并传递哈希，即 projects_path（：scope => user）。这样的路由最终将调用 url_for ，但是在许多地方都定义了 url_for 。当运行应用程序或在主应用程序（根级别）中运行请求规范时，调用链最终在 ActionView :: RoutingUrlFor＃url_for 处结束；但是，当在引擎中运行规范时，调用链最终位于 ActionView :: Helpers :: UrlHelper＃url_for 。
I have a request spec in a Rails engine. The view that is rendered calls a route and passes in a hash, i.e. projects_path(:scope => "user"). A route like this will eventually call url_for, but url_for is defined in many places. When running the application or running a request spec in the main app (root level), the call chain ends up at ActionView::RoutingUrlFor#url_for; when running a spec in the engine, however, the call chain ends up at ActionView::Helpers::UrlHelper#url_for.
在Rails 4中，在 UrlHelper 中定义的 url_for 方法不再接受哈希参数，所以我留下此错误
In Rails 4, the url_for method defined in UrlHelper no longer accepts hash arguments, so I'm left with this error
Failure/Error: visit projects_opportunity_intakes_path
ActionView::Template::Error:
arguments passed to url_for can't be handled. Please require routes or provide your own implementation
我要弄清楚的是为什么会这样当我在引擎中运行某个规范时，便会使用 ActionView :: Helpers :: UrlHelper ，但在其他情况下则不会。这很令人困惑。对我来说很突出的一件事：当我在视图中放置一个断点并评估 self.class 时，我通常会得到从 ActionView :: Base ，但是当我从引擎运行规范时，该类不会继承任何东西。我不知道这是否相关，但是似乎很可疑。
What I'm trying to figure out is why the heck it's falling back on ActionView::Helpers::UrlHelper when I run a spec in my engine, but not in any other case. This is quite perplexing. One thing that stands out to me: when I put a breakpoint in my view and evaluate self.class, I normally get something that inherits from ActionView::Base, but when I run a spec from my engine, the class doesn't inherit from anything. I don't know if that's related, but it seems fishy.
有人经历过吗？知道解决方法吗？我的模块会以错误的顺序包含在内吗？在 spec_helper 或虚拟应用程序初始化中是否可以执行某些操作，以确保使用了正确的模块？
Anyone experience this? Know a way around it? Could my modules be getting included in the wrong order? Is there something in spec_helper or in the dummy app initialization that I can do to make sure that the right modules are being used?
推荐答案
在更新到Rails 4时，我遇到了同样的问题，我发现问题是一个包含以下行的模型：
I had the same issue when updating to Rails 4, and I discovered that the problem was a model containing the following line:
include Rails.application.routes.url_helpers
尝试在您的应用程序中查找包含 url_helpers 的代码。删除该行应有助于解决问题。
Try finding code in your application that includes url_helpers somewhere. Removing that line should help solve the problem.
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