Question

我想在dom-repeat中使用一组数组，但是收到的错误是数据不像数组一样。

dom-repeat.html：465 dom-repeat预期的items数组，找到{0：Array（1），1：Array（1），2：Array（13）......

订单行项目中的原始数据正在被转换为数组数据以排序成卡片。我认为理想的模式可能是：

卡父母

<template is="dom-repeat" items="[[data]" index-as="index">
  <card-item-group data="[[item]]"></card-item-group> -->
</template>

卡儿童

<template is="dom-repeat" items="[[data]" index-as="index">
  <card-items data="[[item]]"></card-items> -->
</template>

我接近这个错误的方式吗？

我可以通过其他方式将订单项合并到卡中吗？

原始数据集：

[{
  "0": {
    "time": "2018-02-20",
    "description": "Item 1",
    "number": "1193312"
  },
  "1": {
    "time": "2018-02-21",
    "itemDesc": "Item 2",
    "number": "1193314"
  },
  "2": {
    "time": "2018-02-21",
    "description": "Item 3",
    "number": "1193314"
}

分组数据集：

[{
  "0":[
   {
      "time": "2018-02-20",
      "description": "Item 1",
      "number": "1193312"
    }
  ],
  "1":[
    {
      "time": "2018-02-21",
      "itemDesc": "Item 2",
      "number": "1193314"
    },{
      "time": "2018-02-21",
      "description": "Item 3",
      "number": "1193314"
    }
  ]
}]

Answer 1

您的数据不是数组。

对它进行一些改造：

func testAllowed() {
    // Create the worker.
    let worker = Worker()
    // Because `Worker` has been extended to conform to `CodeCopStub`, it will
    // have this static property. Set it to true to cause
    // `shouldAllowExecution()` to return `true`.
    Worker.allowed = true

    // Call the method and get the result.
    let actualResult = worker.doSomeStuff()
    // Make sure the result was correct.
    let expectedResult = "Cop allowed it"
    XCTAssertEqual(expectedResult, actualResult)
}

func testNotAllowed() {
    // Same stuff as last time...
    let worker = Worker()
    // ...but you tell it not to allow it.
    Worker.allowed = false

    let actualResult = worker.doSomeStuff()
    // This time, the expected result is different.
    let expectedResult = "Cop said no"
    XCTAssertEqual(expectedResult, actualResult)
}

这将导致：

original.map((item) =>
    Object.keys(item).map((key) => item[key]));

然后进行分组......

如何构造关联数组以注入“dom-repeat”

1 个答案: