如何在 Rails 3 的 ActionController::Metal 中包含 Responder？

发布于 2024-09-05 10:18:24 字数 675 浏览 2 评论 0原文

我正在使用一个 Rails 3 控制器，该控制器的用途非常具体、有限，我所需要的就是让它响应 :json。

该截屏视频表示我的控制器可以从 ActionController::Metal 继承，然后只包含我需要的功能以加快速度： http://rubyonrails.org/screencasts/rails3/action-controller

当我的控制器看起来像这样：

class FoldersController < ActionController::Metal
  respond_to :json
  def all
    respond_with Folder.all
  end
end

我收到错误：

undefined method `respond_to' for FoldersController:Class

我尝试过包括 Responder、ActionController::Responder、ActionController::Metal::Responder，但它们都不起作用。我需要包含哪些内容才能获得此响应程序功能？

原文

I'm working a Rails 3 controller that has a very specific, limited purpose, and all I need is for it to respond_to :json.

This screencast says my controller can inherit from ActionController::Metal, and then just include the functionality I need to make things faster:
http://rubyonrails.org/screencasts/rails3/action-controller

When my controller looks like this:

class FoldersController < ActionController::Metal
  respond_to :json
  def all
    respond_with Folder.all
  end
end

I get the error:

undefined method `respond_to' for FoldersController:Class

I've tried including Responder, ActionController::Responder, ActionController::Metal::Responder, but none of them work. What do I include to get this responder functionality?

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风苍溪 2024-09-12 10:18:24

您需要包含更多类，而不仅仅是 Responder。这是我的 ApplicationController，但并非全部包含您可能需要的：

class Api::ApplicationController < ActionController::Metal
  include ActionController::Helpers
  include ActionController::UrlFor

  include ActionController::Redirecting
  include ActionController::Rendering           # enables rendering
  include ActionController::ConditionalGet      # required for respond_to and respond_with
  include ActionController::MimeResponds        # enables serving different content types like :xml or :json

  include ActionController::Cookies             # enables cookies
  include AbstractController::Callbacks         # callbacks for your authentication logic
  include ActiveSupport::Rescuable              # enables resque_from

  include Rails.application.routes.url_helpers
end

You need to include more classes, not only Responder. Here is my ApplicationController, but not all includes you may need:

class Api::ApplicationController < ActionController::Metal
  include ActionController::Helpers
  include ActionController::UrlFor

  include ActionController::Redirecting
  include ActionController::Rendering           # enables rendering
  include ActionController::ConditionalGet      # required for respond_to and respond_with
  include ActionController::MimeResponds        # enables serving different content types like :xml or :json

  include ActionController::Cookies             # enables cookies
  include AbstractController::Callbacks         # callbacks for your authentication logic
  include ActiveSupport::Rescuable              # enables resque_from

  include Rails.application.routes.url_helpers
end

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