Ember应用程序无法从本地文件加载json数据

Question

我一直在遵循ember快速入门指南来创建一个应用程序来显示一些数据(https://guides.emberjs.com/v2.13.0/getting-started/quick-start/)，但我想显示以下json中的产品，而不是只显示一个带有科学家姓名的javascript数组。

我已经将json文件放在了公共文件夹中。

看起来是这样的：

{
  "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"
        },

诸若此类。

我为显示列表的路由模型编写的代码如下

import Ember from 'ember';

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

我完全遵循了本教程，除了

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

scientists.js中的行。我的数据没有被显示，并且我在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非常陌生，对js也很陌生。感谢任何人的帮助！谢谢!

Answer 1

Ember附带了Development server(localhost:4200)，它不能像with服务器那样使用，也不能用来响应ajax请求。您不能使用localhost:4200端点进行Ember.$.getJSON("/products.json")。

你需要后端任何You服务器来返回响应。如果你目前还没有，那么出于开发目的，你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/

Answer 2

如果将JSON放在app文件夹中并将其导入呢？

import Ember from 'ember';
import yourData from 'your-app/json-file-name.js';

export default Ember.Route.extend({
  model() {
    return yourData;
  }
});

https://ember-twiddle.com/afb9d71933322860938b3936d617a776 -您可以使用它来尝试让.json正常工作...

这里也有一个线程：https://discuss.emberjs.com/t/how-to-import-data-from-json-file-to-ember-app

但是..。不要期望它能正确地出现在ember中--数据存储--并且像你在很多情况下所期望的那样工作。