尝试在模型中包含 ActionController::UrlWriter 时未初始化的内容

问题描述

我正在使用 Rails 3 beta 4 并试图在我的模型中包含 ActionController::UrlWriter，据我所知，这是正确的方法，但我得到未初始化的常量 ActionController::UrlWriter".

I'm using Rails 3 beta 4 and trying to include ActionController::UrlWriter in my model, which is the correct way to go about it as far as i can tell, but i get "Uninitialized Constant ActionController::UrlWriter".

知道为什么会这样吗?它在轨道 3 中移动了吗?

Any idea why that would be? Did it move in rails 3?

推荐答案

首先我同意 zed.这不应该在模型中完成.您的模型应该不知道任何 http 网址.

First I agree with zed. This shouldn't be done in a model. Your models should be unaware of any http url.

我在resque工作中做同样的事情.这就是我所做的:

I do the same in a resque job. Here's what I do :

include ActionDispatch::Routing::UrlFor
include ActionController::PolymorphicRoutes
include Rails.application.routes.url_helpers
default_url_options[:host] = 'example.com'

然后你可以调用任何常用的 url 生成器.

Then you can call any usual url generator.

url_for(object)
page_url(object)

它将在定义为 default_url_options[:host]

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