RoR:嵌套命名空间路由,未定义方法错误

我正在研究一个新的rails应用程序的管理部分,我正在尝试设置一些路线来"正确"做事.我有以下控制器:

class Admin::BlogsController < ApplicationController
  def index
    @blogs = Blog.find(:all)
  end

  def show
    @blog = Blog.find(params[:id])
  end

  ...
end

在routes.rb中:

map.namespace :admin do |admin|
  admin.resources :blogs
end

在views/admin/blogs/index.html.erb中:

<% for blog in @blogs %>
  <%= link_to 'Delete', admin_blog(blog), :method => :delete
<% end %>

我已经确认路线存在:

admin_blogs GET /admin/blogs {:action => "index", :controller=>"admin/blogs"}
admin_blog  GET /admin/blogs/:id {:action => "show", :controller => "admin/blogs"}
....

但是当我尝试查看http:// localhost:3000/admin/blogs时,我收到此错误:

undefined method 'admin_blog' for #

我哪里出错了,为什么？

您的删除链接应以_path结尾:

<%= link_to 'Delete', admin_blog_path(blog), :method => :delete %>