当嵌套模型的名称与控制器名称不同时，如何使用 cancan 加载嵌套资源？
鉴于我有一个嵌套在 Farm 模型下的 Worker 模型，如何在 Workers 控制器（称为 FarmWorkersController）中正确加载 Worker 资源？我已经尝试过这个...
class FarmWorkersController < ApplicationController
load_resource :farm, :parent => true
load_resource :class => 'Worker', :through => :farm, :parent => false
# Note that :parent and :class need to be specified on the Worker resource line,
# as the name of the controller (FarmWorkersController) is different from Worker model name
end
...但我收到错误
undefined method `farm_workers' for #<Farm:0xa87670c>
请注意，如果我在返回 Workers 集合的 Farm 模型中定义了 farm_workers() getter，那么我不会收到错误 - 尽管 Workers 集合未加载索引操作。无论如何，我不想污染我的模型以使控制器身份验证正常工作。
（这应该不重要，但我正在使用 mongoid）
given that I have a Worker model which is nested under Farm model, how do I correctly load the Worker resource in the Workers controller (called FarmWorkersController)? I've tried this...
class FarmWorkersController < ApplicationController
load_resource :farm, :parent => true
load_resource :class => 'Worker', :through => :farm, :parent => false
# Note that :parent and :class need to be specified on the Worker resource line,
# as the name of the controller (FarmWorkersController) is different from Worker model name
end
... but I get the error
undefined method `farm_workers' for #<Farm:0xa87670c>
Note that if I define a farm_workers() getter in the Farm model which returns the collection of Workers, then I don't get the error - though the Workers collection is not loaded for the index action. In any case, I don't want to pollute my model to make the controller authentication work.
(It shouldn't matter but I am using mongoid)
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未经测试，但根据文档/代码，您应该能够将名称指定为
load_resource的第一个参数：Untested, but according to the docs/code, you should be able to specify the name as the first argument to
load_resource: