Question

我可能会对这个问题感到失望。当然，我试图几乎同时学习所有这些技术并没有帮助。我使用Node.js / Express / Mongoose / MongoDB构建了一个API，它可以工作。我试图在Ember.js应用程序中使用此REST端点。 Ember应用程序使用夹具，因此客户端正在工作。

问题是REST端点将对象ID发送为_id，而Ember期望并且需要id。是的，我已经searched and located a related question并尝试了解决方案：

WbsEmber.ApplicationAdapter = DS.RESTAdapter.extend({
  serializer: DS.RESTSerializer.extend({
    primaryKey: function(type){
      return '_id';
    }
  }),
  host: 'http://localhost:8080',
  namespace: 'api'
});

阅读Ember.DS api documentation for the RESTAdapter，看起来应该可行：

WbsEmber.ApplicationSerializer = DS.RESTSerializer.extend({
    primaryKey: '_id'
});

WbsEmber.ApplicationAdapter = DS.RESTAdapter.extend({
    host: 'http://localhost:8080',
    namespace: 'api'
});

但是，两者都在控制台中不断抛出此错误堆栈。

Error while loading route: Error: No model was found for '0'
    at new Error (native)
    at Error.Ember.Error (http://localhost:9000/bower_components/ember/ember.js:910:19)
    at Ember.Object.extend.modelFor (http://localhost:9000/bower_components/ember-data/ember-data.js:9805:33)
    at JSONSerializer.extend.extractArray (http://localhost:9000/bower_components/ember-data/ember-data.js:3172:28)
    at superWrapper (http://localhost:9000/bower_components/ember/ember.js:1292:16)
    at Ember.Object.extend.extractFindAll (http://localhost:9000/bower_components/ember-data/ember-data.js:2380:21)
    at Ember.Object.extend.extract (http://localhost:9000/bower_components/ember-data/ember-data.js:2365:37)
    at http://localhost:9000/bower_components/ember-data/ember-data.js:10396:34
    at invokeCallback (http://localhost:9000/bower_components/ember/ember.js:10013:19)
    at publish (http://localhost:9000/bower_components/ember/ember.js:9683:9)

为了比较，我的夹具如下所示：

WbsEmber.Code.FIXTURES = [
    { id: 0, wbs: 'C04220', name: 'AGSS', type: 'prefix' },
    { id: 1, wbs: 'E5180', name: "ILO", type: 'suffix' },
    { id: 2, wbs: 'C04210', name: 'ARC1', type: 'prefix' },
    { id: 3, wbs: 'E0040', name: ' course preparation', type: 'suffix' },
    { id: 4, wbs: 'C04232', name: 'ARC2', type: 'prefix' },
    { id: 5, wbs: 'E0041', name: 'learn new course', type: 'suffix' },
    { id: 6, wbs: '4710', name: 'instructor labor', type: 'single' },
    { id: 7, wbs: 'ES1028', name: 'tech lead labor', type: 'single' }
];

来自REST端点的JSON响应如下所示：

[
    {"_id": "53ac3f0d4e29d793d9f53384", "type": "prefix", "name": "UAGI", "wbs": "C04424", "__v": 0},
    {"_id": "53ac3f114e29d793d9f53385", "type": "prefix", "name": "AGSS", "wbs": "C04220", "__v": 0},
    {"_id": "53ac3f154e29d793d9f53386", "type": "prefix", "name": "ARC1", "wbs": "C04210", "__v": 0},
    {"_id": "53ac3f184e29d793d9f53387", "type": "prefix", "name": "ARC2", "wbs": "C04232", "__v": 0}
]

直接从Chrome中的开发者工具复制和粘贴回复，因此请求成功完成并且响应正在向客户端发送。

仅供参考，以下是所有套餐和各自的版本。

"dependencies": {
    "ember": "1.5.0",
    "handlebars": "1.2.1",
    "ember-data": "1.0.0-beta.7",
    "bootstrap-sass-official": "3.1.1",
    "ember-addons.bs_for_ember": "~0.7.0"
}

对于我的生活，我似乎无法弄清楚如何让这个工作。欢迎任何有关解决此问题的来源的建议，见解或参考。谢谢你的帮助。

Answer 1

这是正确的模式：

WbsEmber.ApplicationSerializer = DS.RESTSerializer.extend({
    primaryKey: '_id'
});

WbsEmber.ApplicationAdapter = DS.RESTAdapter.extend({
    host: 'http://localhost:8080',
    namespace: 'api'
});

您的json响应应该（或序列化），采用以下格式：

{
  codes: [
    {"_id": "53ac3f0d4e29d793d9f53384", "type": "prefix", "name": "UAGI", "wbs": "C04424", "__v": 0},
    {"_id": "53ac3f114e29d793d9f53385", "type": "prefix", "name": "AGSS", "wbs": "C04220", "__v": 0},
    {"_id": "53ac3f154e29d793d9f53386", "type": "prefix", "name": "ARC1", "wbs": "C04210", "__v": 0},
    {"_id": "53ac3f184e29d793d9f53387", "type": "prefix", "name": "ARC2", "wbs": "C04232", "__v": 0}
  ]
}

转换文档对于仍在进行中的文档中的一些细微差别非常有帮助：https://github.com/emberjs/data/blob/master/TRANSITION.md

Ember.js primaryKey：'_ id'？

1 个答案: