Rails应用程序发送过多的不相关的数据以JSON

Question

所需的输出：仅从活动，如数据：

[{"id":600,"title":600,"start":"2018-10-17T15:24:06.000Z","end":"2018-10-17T17:11:06.000Z","color":"green"}
[{"id":601,"title":601,"start":"2019-10-17T15:24:06.000Z","end":"2018-10-17T17:11:06.000Z","color":"green"}

出于某种原因电流输出也给信息从application.html.erb和application.js和其他文件：

事件/ _event.json.jbuilder：

json.id event.id
json.title event.id
json.start event.starts_at
json.end event.ends_at
json.color event.status_color unless event.status_color.blank?
json.url event_url(event, format: :json)

index.json.jbuilder：

json.array! @events, partial: 'events/event', as: :event

控制器：

class EventsController < ApplicationController
  def index
    @events = Event.all
    #@q = Event.ransack(params[:q])
    #@events = @q.result.includes(:location, :client, :jobs).paginate(:page => params[:page], :per_page => 15).order("created_at DESC")
  end end

安慰：

Started GET "/events.json" for 143.27.126.62 at 2019-01-31 10:49:24 +0000
Cannot render console from 143.27.126.62! Allowed networks: 127.0.0.1, ::1, 127.0.0.0/127.255.255.255
Processing by EventsController#index as JSON
  User Load (0.8ms)  SELECT  "users".* FROM "users" WHERE (users.tenant_id IS NULL) AND "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["id", 1], ["LIMIT", 1]]
  ↳ /usr/local/rvm/gems/ruby-2.5.3/bundler/gems/milia-4c36b46f3f42/lib/milia/control.rb:102
  Tenant Load (0.7ms)  SELECT "tenants".* FROM "tenants" INNER JOIN "tenants_users" ON "tenants"."id" = "tenants_users"."tenant_id" WHERE (tenants.tenant_id IS NULL) AND "tenants_users"."user_id" = $1  [["user_id", 1]]
  ↳ /usr/local/rvm/gems/ruby-2.5.3/bundler/gems/milia-4c36b46f3f42/lib/milia/control.rb:69
MILIA >>>>> [change tenant] new: 1      old: 1
MILIA >>>>> [auth_tenant callback]
  Tenant Load (0.6ms)  SELECT  "tenants".* FROM "tenants" WHERE (tenants.tenant_id IS NULL) AND "tenants"."id" = $1 LIMIT $2  [["id", 1], ["LIMIT", 1]]
  ↳ /usr/local/rvm/gems/ruby-2.5.3/bundler/gems/milia-4c36b46f3f42/lib/milia/base.rb:126
  CACHE Tenant Load (0.0ms)  SELECT  "tenants".* FROM "tenants" WHERE (tenants.tenant_id IS NULL) AND "tenants"."id" = $1 LIMIT $2  [["id", 1], ["LIMIT", 1]]
  ↳ /usr/local/rvm/gems/ruby-2.5.3/bundler/gems/milia-4c36b46f3f42/lib/milia/base.rb:126
  CACHE Tenant Load (0.0ms)  SELECT  "tenants".* FROM "tenants" WHERE (tenants.tenant_id IS NULL) AND "tenants"."id" = $1 LIMIT $2  [["id", 1], ["LIMIT", 1]]
  ↳ /usr/local/rvm/gems/ruby-2.5.3/bundler/gems/milia-4c36b46f3f42/lib/milia/base.rb:126
  Rendering events/index.json.jbuilder within layouts/application
  Event Load (80.7ms)  SELECT "events".* FROM "events" WHERE (events.tenant_id = 1)
  ↳ app/views/events/index.json.jbuilder:1
  Rendered events/_event.json.jbuilder (1.1ms)
  Rendered events/_event.json.jbuilder (0.3ms)
  Rendered events/_event.json.jbuilder (0.2ms)
  Rendered events/_event.json.jbuilder (0.2ms)
  Rendered events/_event.json.jbuilder (0.3ms)

也许这与Rendering events/index.json.jbuilder within layouts/application办？

Answer 1

因为我需要编写一些代码，我现在张贴这作为一个答案：

你确定它做/events.json？或者是做/events呢？ （看你的截图，我觉得你刚才输入在Chrome地址栏/events.json那里，因为它应该包括“主机名”有默认情况下（从据我所知）。

如何rails确定什么响应格式渲染是通过this doc：

例：

GET /posts/5.xml   | request.format => Mime::XML
GET /posts/5.xhtml | request.format => Mime::HTML
GET /posts/5       | request.format => Mime::HTML or MIME::JS, or request.accepts.first`

因此，

• GET /events.xml将“默认”渲染app/views/events.xml.TEMPLATE_ENGINE
• GET /events.json将“默认”渲染app/views/events.json.TEMPLATE_ENGINE
• GET /events将由“默认”从所述第一值中推断“接受”报头。即，如果我在这个网址在Chrome地址栏中键入，看着Chrome的网络选项卡，铬似乎产生了“接受”头如下： Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8 ......其中的第一个值是text/html，而就是为什么“默认” Rails会呈现app/views/posts.html.TEMPLATE_ENGINE。 ^这是目前我的猜测，为什么你看到的HTML代替，因为很可能你正在做的请求GET /events而不是正确的一个是GET /events.json。你仍然可以做但是GET /events，但你需要修改“接受”头等于"application/json"

调试：

为了检验上述我的理论，就可以打开Chrome的“网络选项卡”（点击HERE如果你不知道如何打开它）。然后做/发送请求，从正常到你的Rails端点（说不上来也许你点击一个按钮，发送请求？）。此后，“网络”选项卡将被填充。你会看到如下：

正如你可以看到，该网址是posts.json这是它应该是什么。如果您是不是看到events而不是events.json，那么这就是你的问题。你需要确保它做的，而不是events.json，或者你仍然可以做events，但在更新请求中的“接受”头（你将在截图中看到，该值应该有"Accept: application/json"

附：所有我上面说的是，你是不是在控制器动作渲染“手动”的假设下，和你没有手动调用render（这应该怎么办Rails的默认值，Rails会隐式渲染的，也是我一直所描述上面我的回答）

Answer 2

尝试在操作方法的最后一行添加respont_to :json。

class EventsController < ApplicationController
  def index
    @events = Event.all
    resond_to :json # add this line
  end
end