Question

我在ng-repeat中有一个选择选项和几个textareas，我想要做的是，当我从菜单中选择一个选项时，相应的textareas集显示了一些属于我刚才的信息地选择。

使用ng-repeat创建的所有textareas都显示信息，而不是这样做。

这里是JSFiddle的链接，可以更好地解释问题： https://jsfiddle.net/711yvm8g/5/

这是HTML代码：

<div ng-app="App">
   <div ng-controller="Ctrl">
      <div ng-repeat="data in carData">
        <select ng-model = "carSelected" ng-change = "changeInfo(carSelected)" data-ng-options = "car as car.name for car in cars">
        <option value = "">Select car</option>
      </select>

      <textarea>{{colorData}}</textarea>
      <textarea>{{yearData}}</textarea>
  </div>

以下是Javascript代码：

angular.module('App', []);

function Ctrl($scope) {
    //This carData object was created only to make the ng-repeat show multiple instances of the fields.
    $scope.carData = {
        a:"abc",
        b:"def"
    }

    $scope.cars = [{
        name: "Volvo"
    }, {
        name: "Saab"
    }]

    var volvoInfo = {
        color:"Blue",
        year:"2016"
    }

    var saabInfo = {
        color:"Red",
        year:"2015"
    }

    $scope.changeInfo = function(carSelected) {
        if(carSelected.name == "Volvo") {
            $scope.colorData = volvoInfo.color;
            $scope.yearData = volvoInfo.year;
        } else {
            $scope.colorData = saabInfo.color;
            $scope.yearData = saabInfo.year;
        }
    }
}

有没有办法可以解决这个问题？非常感谢。

Answer 1

您应该重构代码以使用对象数组。这样就更容易管理了。

angular.module('App', []);

function Ctrl($scope) {
  let carInfoModel = {
    name: '',
    color: '',
    year: '',
  }
  $scope.cars = [angular.copy(carInfoModel),angular.copy(carInfoModel)]

  $scope.carsInfo = [{
    name: 'Volvo',
    color: 'Blue',
    year: "2016"
  }, {
    name: 'Saab',
    color: 'Red',
    year: "2015"
  }]

}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="App">
  <div ng-controller="Ctrl">
    <div ng-repeat="data in cars">
      <select ng-model="data" data-ng-options="car as car.name for car in carsInfo">
        <option value="">Select car</option>
      </select>
      <textarea>{{data.color}}</textarea>
      <textarea>{{data.year}}</textarea>
    </div>
  </div>
</div>

Answer 2

尝试使用Ctrl.colorData和Ctrl.yearData作为textarea绑定

Angular JS - 如何从控制器更新ng-repeat的信息？

2 个答案: