Rails 3.1：视图未在命名空间布局中呈现
在routes.rb中：
namespace :admin do
root :controller => "base", :action => "index"
resources :products
end
产品控制器继承自基本控制器：
class Admin::BaseController < ApplicationController
#layout 'admin'
def index
end
end
class Admin::ProductsController < Admin::BaseController
def index
end
end
如果没有“layout 'admin'”，两个索引视图都会正常渲染。
使用“layout 'admin'”，会呈现管理布局，但不会呈现视图，尽管 WEBricks 消息如下：
Rendered admin/products/index.html.erb within layouts/admin
In routes.rb:
namespace :admin do
root :controller => "base", :action => "index"
resources :products
end
The products controller inherits from the base controller:
class Admin::BaseController < ApplicationController
#layout 'admin'
def index
end
end
class Admin::ProductsController < Admin::BaseController
def index
end
end
Without "layout 'admin'", both index views render normally.
With "layout 'admin'", the admin layout is rendered, but the views are not rendered, despite WEBricks message:
Rendered admin/products/index.html.erb within layouts/admin
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<%= yield %>可能会有所帮助，伙计<%= yield %>might help there, mate