SANE堆栈如何在单个模型上表示父/子关系 [英] How does the SANE stack represent parent/child relationships on a single model

问题描述

如何在同一模型中表示父/子关系？

How do I represent a parent/child relationship on the same model?

一个示例是一个表示文件夹的模型。父文件夹可以有多个子文件夹。但是一个子文件夹只能有一个父文件夹。

An example of this is a model representing a folder. A parent folder can have many children folders. But a child folder can only have one parent folder.

Ember.js具有。我想实现第一个选项。

Ember.js has the concept of reflexive relations. I would like to implement the first option.

...明确定义另一边，并相应设置显式的逆$ $ $ $ $ $

"... explicitly define the other side, and set the explicit inverse accordingly ..."

如何在SANE堆栈的sails.js端设置？

How would I go about setting that up on the sails.js side of the SANE stack?

推荐答案

我不知道在客户端网站上需要做什么调整，但是我确信在Sails端这样做的唯一方法是设置一秒引用同一个表的模型。

I'm not sure what adjustments you would need to make on the client site, however I'm pretty sure the only way to do this on Sails side is to setup a second model that references the same table.

这将允许您拥有一个自己拥有一对多关系的项目表。

This would allow you to have a table of items that has a one to many relationship on itself.

stuffA.js
module.exports = {
   table:'stuff',
   attributes: {
        otherStuff : {
             model: 'modelB'
        }
   }
}

stuffB.js
module.exports = {
   table:'stuff',
   otherstuff: {
         collection : 'stuffA',
         via: 'otherstuff'
   }
}

我知道这可能无法回答您的问题，因为您问过如何在单个模型上执行此操作，但如果您的意图是单个集合/表。

I understand this may NOT answer your question since you asked how you would do this on a single model, but in case you you meant single Collection / Table.

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