javascript - Ember 应用程序无法从本地文件加载 json 数据

Question

我一直在按照 ember 快速入门指南创建一个显示一些数据 (https://guides.emberjs.com/v2.13.0/getting-started/quick-start/) 的应用程序，但我不想只显示带有科学家姓名的 javascript 数组，而是想显示来自以下 json 的产品。

我已经把json文件放到public文件夹里了。

看起来像:

{
  "products": [
    {
      "_id": "58ff60ffcd082f040072305a",
      "slug": "apple-tree-printed-linen-butterfly-bow-tie",
      "name": "Apple Tree Printed Linen Butterfly Bow Tie ",
      "description": "This fun 40 Colori Apple Tree Printed Linen Butterfly Bow Tie features a design of various apple trees built from tiny polka dots. The back of this bow tie features a polka dot print in complementing colours which when the bow tie is tied will pop out from behind making for a subtle yet unique detail. The playful design, stand out natural linen texture, and colourful combinations make this bow tie a perfect accessory for any outfit!\n",
      "standard_manufacturer": "58cbafc55491430300c422ff",
      "details": "Size: Untied (self-tie) bow tie with an easily adjustable neck strap from 13-3/4'' to 19'' (35 to 48 cm)\nHeight: 6 cm\nMaterial: Printed 100% linen\nCare: Dry clean\nMade in Italy",
      "sizes": [
        {
          "value": "Violet",
          "size": "57722c80c8595b0300a11e61",
          "_id": "58ff60ffcd082f0400723070",
          "marked_as_oos_at": null,
          "quantity": -1,
          "stock": true,
          "id": "58ff60ffcd082f0400723070"
        },

等等。

我的显示列表的路由模型代码如下

import Ember from 'ember';

export default Ember.Route.extend({
    model() {
        //return ['Marie Curie', 'Mae Jemison', 'Albert Hofmann'];
        return Ember.$.getJSON("/products.json");
    }
});

我完全按照教程做了，除了

return Ember.$.getJSON("/products.json");

scientists.js 中的行。我的数据没有显示，我在 ember 检查器中得到的错误是

compiled.js:2 Uncaught TypeError: Failed to execute 'getComputedStyle' on 'Window': parameter 1 is not of type 'Element'.
    at E (compiled.js:2)
    at Object.u (compiled.js:25)
    at compiled.js:25
E   @   compiled.js:2
u   @   compiled.js:25
(anonymous) @   compiled.js:25

我对 ember 很陌生，对 js 也很陌生。任何帮助表示赞赏!谢谢!

Answer 1

Ember 自带开发服务器(localhost:4200)，它不能像网络服务器一样使用，也不能用于响应 ajax 请求。您无法使用 localhost:4200 端点使此工作 Ember.$.getJSON("/products.json")。

您需要后端任何网络服务器来返回响应。如果您目前没有，那么出于开发目的，您需要使用动态渲染数据，那么我更喜欢使用 ember-cli-mirage插件。

http://www.ember-cli-mirage.com/docs/v0.3.x/