ruby-on-rails - 依赖 : :destroy doesn't work (has_many association)

Question

我的问题就像这个线程的标题一样简单
我有两个类

class Category < ActiveRecord::Base

  has_many :subcategories, dependent: :destroy

  accepts_nested_attributes_for :subcategories

end

class Subcategory < ActiveRecord::Base
  belongs_to :category
end

但是当我点击 link_to "Delete", category_path(category), method: :delete请求的类别被销毁，但所有子类别都保持原样。

编辑

服务器日志:

Started DELETE "/categories/8" for 127.0.0.1 at 2013-10-29 01:38:01 +0100
Processing by CategoriesController#destroy as HTML
  Parameters: {"authenticity_token"=>"rOTo3ROv/QsQRMPyCljbMvrViKgihC1CowBdlHdq7O4=", "id"=>"8"}
  Category Load (0.3ms)  SELECT `categories`.* FROM `categories` WHERE `categories`.`id` = 8 LIMIT 1
  SQL (0.5ms)  DELETE FROM `categories` WHERE `categories`.`id` = 8
Redirected to http://localhost:3000/categories
Completed 302 Found in 3ms (ActiveRecord: 0.8ms)


Started GET "/categories" for 127.0.0.1 at 2013-10-29 01:38:01 +0100
Processing by CategoriesController#index as HTML
  Category Load (0.3ms)  SELECT `categories`.* FROM `categories`
  Rendered categories/index.html.haml within layouts/application (0.9ms)
  Rendered application/_header.html.haml (0.1ms)
Completed 200 OK in 6ms (Views: 5.5ms | ActiveRecord: 0.3ms)

Answer 1

您在打电话吗delete在类别上？你应该打电话destroy反而。