Question

我使用ng-options生成其选项为位置的选择标记。标签是位置名称，值是位置ID（在数据库中）。

我已将值（位置ID）绑定到ng-model属性，但我还想将标签（位置名称）绑定到不同的ng-model属性。（我需要将id字段分开，因为这将被发布到需要此特定属性的服务器。）在Angular中执行此操作的最佳方法是什么？

我的代码：

<div ng-app="app"><div ng-controller="edit">
  <select ng-model="purchase.pickUpLocationId" ng-options="loc.id as loc.name for loc in purchase.availableLocations"></select>

  <!-- This is the model not yet bound: -->
  <p>You have selected {{ purchase.pickUpLocationName }}</p>

</div></div>

var app = angular.module('app', []);

app.controller('edit', ['$scope', function($scope) {
    $scope.purchase = {
        pickUpLocationId: 30,
        availableLocations: [
            {id: 20, name: "Charleston, SC"},
            {id: 30, name: "Atlanta, GA"},
            {id: 40, name: "Richmond, VA"},
        ]
    };
}]);

Answer 1

您可以更改为以下内容并绑定到整个对象。您稍后仍可以访问id，无论您希望使用它做什么

<select ng-model="selected" ng-options="loc as loc.name for loc in purchase.availableLocations"></select>

<p>You have selected {{ selected.name }}</p>
<p>You havd id too! {{ selected.id }}</p>

JSFiddle Link

Answer 2

我的建议是先建模为哈希

{
   "20": "Charleston, SC",
   "30": "Atlanta, GA"
}

然后使用{{availableLocations[purchase.pickUpLocationId]}}

并将ng-options设为

<select ng-model="purchase.pickUpLocationId" ng-options="id as label for (id, label) in purchase.availableLocations"></select>

Answer 3

更新了scniro回答

<div ng-app="app">
<div ng-controller="ctrl">
     <select ng-model="selected" ng-options="opt as opt.language for opt in tableResult.locales"></select>        
     <p>You have selected {{ selected.language }}</p>
     <p>You havd id too! {{ selected.localeId }}</p>
     <p>
     </p>
     <input type="text" value="{{selected.localeId}} : {{selected.language}}" style="width:50%;"/>

</div>

<强> JSFIDDLE -Bind ng options value and label

将ng-options值和标签绑定到ng-model

3 个答案:

JSFiddle Link