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我正在使用 AngularJS 对数组的所有子文档进行分组。它只能对子文档的第一项进行分组并给出长度我如何获得其正确长度的计数。我的plunk 链接。

我现在得到的结果是

Isnain Meals - 1

Chicken Burger - 2

预期结果

Isnain Meals - 2

Chicken Burger - 2

HTML

<body ng-controller="MainCtrl">
    <div ng-repeat="(key, data) in groupedByFoodName">
      <p>{{key}} - {{data.length}}</p>
    </div>
</body>

控制器JS

$scope.groupedByFoodName=  _.groupBy($scope.lists, function (each) { return each.orderfood[0].name });

JSON

  $scope.lists = [
{
  "_id": "56b0c315e179bb0e00a44dbf",
  "orderfood": [
    {
      "_id": "569d865bff1fe20e00f8ba97",
      "qty": "1",
      "confirm": true,
      "price": 154,
      "name": "Isnain Meals"
    },
    {
      "_id": "569d865bff1fe20e00f8ba98",
      "qty": "1",
      "confirm": true,
      "price": 154,
      "name": "Isnain Meals"
    }
  ],
  "content": "9176649143",
  "created": "2016-02-02T14:54:13.926Z"
},
{
  "_id": "56b06ed25b53250e00ccbd73",
  "orderfood": [
    {
      "_id": "569d84f04834c10e003dff36",
      "qty": "1",
      "confirm": true,
      "price": 125,
      "name": "Chicken Burger"
    }
  ],
  "content": "6886058585",
  "created": "2016-02-02T08:54:42.986Z"
},
{
  "_id": "56b06ed25b53250e00ccbd74",
  "orderfood": [
    {
      "_id": "569d84f04834c10e003dff37",
      "qty": "1",
      "confirm": true,
      "price": 125,
      "name": "Chicken Burger"
    }
  ],
  "content": "6886058585",
  "created": "2016-02-02T08:54:42.986Z"
}];
4

1 回答 1

1

尝试这个

var groupedByFoodName=  _.chain(lists).map(function(each){ return each.orderfood}).flatten().groupBy(function (each) { console.log(each); return each.name  }).value();

你写的不太对_.groupBy，它只返回数组orderfood的名字。

jsfiddle上的实时示例。

<form name="ExampleForm" id="ExampleForm">
  <div ng-repeat="(key, data) in groupedByFoodName">
    <p>{{key}} - {{data.length}}</p>
  </div>
</form>

和 JS：

    $scope.lists = [{
  "_id": "56b0c315e179bb0e00a44dbf",
  "orderfood": [{
    "_id": "569d865bff1fe20e00f8ba97",
    "qty": "1",
    "confirm": true,
    "price": 154,
    "name": "Isnain Meals"
  }, {
    "_id": "569d865bff1fe20e00f8ba98",
    "qty": "1",
    "confirm": true,
    "price": 154,
    "name": "Isnain Meals"
  }],
  "content": "9176649143",
  "created": "2016-02-02T14:54:13.926Z"
}, {
  "_id": "56b06ed25b53250e00ccbd73",
  "orderfood": [{
    "_id": "569d84f04834c10e003dff36",
    "qty": "1",
    "confirm": true,
    "price": 125,
    "name": "Chicken Burger"
  }],
  "content": "6886058585",
  "created": "2016-02-02T08:54:42.986Z"
}, {
  "_id": "56b06ed25b53250e00ccbd74",
  "orderfood": [{
    "_id": "569d84f04834c10e003dff37",
    "qty": "1",
    "confirm": true,
    "price": 125,
    "name": "Chicken Burger"
  }],
  "content": "6886058585",
  "created": "2016-02-02T08:54:42.986Z"
}];

$scope.groupedByFoodName = _.chain($scope.lists).map(function(each) {
  return each.orderfood
}).flatten().groupBy(function(each) {
  return each.name
}).value();
于 2016-02-05T09:56:54.573 回答