嵌套模板，查找父项 [英] Nested Templates, Finding Parent

问题描述

我有一系列嵌套对象.说喜欢...商店和商品.

I have a series of nested objects. Say like... stores and items.

我大概有 10 家商店，每家商店都有相同的 10 件商品，同时显示在屏幕上.

I have perhaps 10 stores, each with the same 10 items, displayed on the screen at the same time.

<template name='store'>
  {{#each items}}
   {{> item}}
  {{/each}}
</template>


<template name='item'>
  {{name}} {{qty}}
</template>

我遇到的主要问题是尝试使用辅助函数确定 {{qty}}.这是因为项目本身没有数量"，而是取决于它与哪个商店"相关.所以我需要根据商店"+项目"找到数量.

The main problem I have is trying to determine {{qty}} using a helper function. This is because the item inherently does not have a 'quantity', but rather it depends on which "store" it is related to. So I'd need to find the quantity based on the "store" + "item".

搜索这个的流星方式"是什么?是否在DOM中存储一堆数据-*属性并通过Jquery搜索我的mongdb _id项目?我不认为 mustache 允许您弄清楚您来自哪里并访问父范围的变量".它不像主干，我可以将链接从父商店视图添加到子项目视图.

What's the "meteor way" of searching for this? Is it to store a bunch of data -* attributes in the DOM and search out my mongdb _id items via Jquery? I don't think mustache allows you to figure out where you came from and access a "parent scope's variables". And it's not like backbone where I can just add that link from the parent-store view to the child-item views.

我不喜欢使用会话变量，因为我担心这可能会导致竞争条件(例如 Session.get('current_store_id')).

I don't feel comfortable using session variables because I'm worried that that may cause race conditions (such as Session.get('current_store_id')).

谢谢！

推荐答案

Handlebars 支持路径中的 ../，这可能会有所帮助:

Handlebars supports ../ in paths, which might help:

http://handlebarsjs.com/#paths

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