JBuilder模板永远不会被调用

问题描述

在我的Rails 4应用程序中，我有一个API::V1::ClustersController结构，如下所示:

In my Rails 4 app, I have a API::V1::ClustersController structured like so:

class Api::V1::ClustersController < ApplicationController
  respond_to :json

  def index
    @clusters = Cluster.all

    render json: @clusters
  end
class

在我的app/views/api/v1/clusters/index.json.jbuilder视图中:

json.array!(@clusters) do |cluster|
  json.extract! cluster, :id, :index
  json.url cluster_url(cluster, format: :json)
end

在我的路线上:

namespace :api, defaults: { format: :json } do
  namespace :v1 do
    authenticated :user do
      resources :clusters
    end
  end
end

不幸的是，当我按下http://localhost:3000/api/v1/clusters.json时，以下是json输出:

Unfortunately, the following is the json output when I hit http://localhost:3000/api/v1/clusters.json :

{
  clusters: [
    {
      id: 1,
      organization: null,
      number: null,
      name: "Roob Group",
      created_at: "2014-07-16T17:41:09.214Z",
      updated_at: "2014-07-16T17:41:09.214Z"
    },
    {
      id: 2,
      organization: null,
      number: null,
      name: "Lesch LLC",
      created_at: "2014-07-16T17:41:09.302Z",
      updated_at: "2014-07-16T17:41:09.302Z"
    }
  ]
}

我不知道该怎么办.感谢您的帮助.

I don't know what else to do. Any help is appreciated.

推荐答案

在这种情况下，您需要在控制器中使用respond_with而不是render

In this case you need to use respond_with instead of render in you controller

class Api::V1::ClustersController < ApplicationController
  respond_to :json

  def index
    @clusters = Cluster.all

    respond_with @clusters
  end
end

调用render json: @clusters时就像调用render @clusters.to_json一样，因此控制器不会呈现模板.如果要使用render，则可以将其包含在respond_to块中，但是response_with更为优雅.

When you call render json: @clusters its like you call render @clusters.to_json so your controller doesn't render a template. if you want to use render you can include this in a respond_to block, but respond_with is more elegant.

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