Question

我在windows上运行的ember上有这个奇怪的错误。我正在复制此代码以进行选择

inputs.hbs：

<h1>All inputs</h1>

<input id="register-input-1" type="text" placeholder="username">

<form action="">
  {{input type="radio" name="type" value="foo" }}Foo<br>
  {{input type="radio" name="type" value="bar"}}Bar
  {{input type="text" name="type" placeholder="type in here"}}
  {{view "select" content=names}}
</form>

控制器：

export default Ember.Controller.extend({
  selectedName: 'Tom',
  names: ["Yehuda", "Tom"]
});

但是我收到了这个错误：

Uncaught Error: Assertion Failed: 
  The value that #each loops over must be an Array. You passed [Yehuda,Tom]

从这里复制： http://emberjs.com/api/classes/Ember.Select.html

这是我的依赖：

bower:
{
  "dependencies": {
    "jquery": "^1.11.1",
    "ember": "1.11.0",
    "ember-data": "1.0.0-beta.16.1",
    "ember-resolver": "~0.1.15",
    "loader.js": "ember-cli/loader.js#3.2.0",
    "ember-cli-shims": "ember-cli/ember-cli-shims#0.0.3",
    "ember-cli-test-loader": "ember-cli-test-loader#0.1.3",
    "ember-load-initializers": "ember-cli/ember-load-initializers#0.0.2",
    "ember-qunit": "0.3.0",
    "ember-qunit-notifications": "0.0.7",
    "qunit": "~1.17.1"
  }
}

包：

{

  "scripts": {
    "start": "ember server",
    "build": "ember build",
    "test": "ember test"
  },
  "engines": {
    "node": ">= 0.10.0"
  },
  "author": "",
  "license": "MIT",
  "devDependencies": {
    "broccoli-asset-rev": "^2.0.2",
    "ember-cli": "0.2.2",
    "ember-cli-app-version": "0.3.3",
    "ember-cli-content-security-policy": "0.4.0",
    "ember-cli-dependency-checker": "0.0.8",
    "ember-cli-htmlbars": "0.7.4",
    "ember-cli-ic-ajax": "0.1.1",
    "ember-cli-inject-live-reload": "^1.3.0",
    "ember-cli-qunit": "0.3.9",
    "ember-cli-uglify": "1.0.1",
    "ember-data": "1.0.0-beta.16.1",
    "ember-export-application-global": "^1.0.2",
    "ember-disable-prototype-extensions": "^1.0.0"
  },
  "keywords": [
    "ember-addon"
  ],
  "dependencies": {
    "ember-cli-babel": "^4.0.0"
  },
  "ember-addon": {
    "configPath": "tests/dummy/config"
  }
}

Answer 1

根据我们的评论，您好像有prototype extensions disabled。简而言之，Ember.js使用其他方法扩展了许多内置的全局对象，例如Array。它这样做是为了符合它的对象模型和观察者系统所需的API。但是，Ember团队意识到并不是每个人都可以修改内置对象，所以它的目标是禁用这些扩展。这样做的缺点是Ember仍然需要程序中的所有对象符合它所需的API。

这就是Ember.A()的来源。Ember.A()采用一个普通的旧Javascript数组（没有启用扩展）并用EmberNativeArray包装它。这可以确保数组符合所需的API，但不必修改内置的Array原型来执行此操作。

简而言之，如果您禁用了原型扩展，则必须在上调用{em>每个阵列上的Ember.A() .Ember将在某个时刻使用它。无论是数组文字（如代码中）还是从第三方库返回的数组，必须调用Ember.A(array)才能将其提交给Ember。

灰烬选择视图不理解数组

1 个答案: