检索CakePHP 3.x中的嵌套引用数据(Retrieving Nested Referral Data in CakePHP 3.x)

检索CakePHP 3.x中的嵌套引用数据(Retrieving Nested Referral Data in CakePHP 3.x)

我试图弄清楚如何在CakePHP 3.x中获取嵌套子对象的值

一个基本的例子包括三个实体：

服务器，机架，Operating_System

表：

机架 - id，名称

服务器 - id，hostname，rack_id，operating_system_id

Operating_systems - id，name

Rack hasMany Servers

服务器所属于操作系统和属于机架

如何在Rack View中引用Rack-> Server-> OperatingSystem-> name？

//View.ctp <?php foreach ($rack->servers as $servers): echo h($servers->hostname) echo h($servers->operating_system->name) //Doesn't output OS Name endforeach; ?> //View Function in RacksController: public function view($id = null) { $rack = $this->Racks->get($id, [ 'contain' => ['Servers'] ]); $this->set('rack', $rack); $this->set('_serialize', ['rack']); }

不确定这是否最终成为控制器中的自定义查询，或者是否有内置的Cake语法来完成我需要的内容。 谢谢你的帮助。

I'm trying to figure out how it's possible to get the value of a nested child object in CakePHP 3.x

A basic example consists of three entities:

Server, Rack, Operating_System

Tables:

Racks - id, name

Servers - id, hostname, rack_id, operating_system_id

Operating_systems - id, name

Rack hasMany Servers

Server belongsTo OperatingSystems & belongsTo Racks

How can I reference Rack->Server->OperatingSystem->name in my Rack View?

//View.ctp <?php foreach ($rack->servers as $servers): echo h($servers->hostname) echo h($servers->operating_system->name) //Doesn't output OS Name endforeach; ?> //View Function in RacksController: public function view($id = null) { $rack = $this->Racks->get($id, [ 'contain' => ['Servers'] ]); $this->set('rack', $rack); $this->set('_serialize', ['rack']); }

Not sure if this ends up being a custom query in the controller or if there is a built-in Cake syntax to accomplish what I need. Thanks for any help.

最满意答案

尝试：

$rack = $this->Racks->get($id, [ 'contain' => ['Servers' => 'OperatingSystems'] ]);

Found the answer:

Cake 3.x passing-conditions-to-contain

$rack = $this->Racks->get($id, [ 'contain' => ['Servers','Servers.OperatingSystems'] ]);

Solution is to use the dot notation for deeply nested associations. Thanks to aknd for pointing me in the right direction.