我有一些复选框:

<input type='checkbox' value="apple" checked>
<input type='checkbox' value="orange">
<input type='checkbox' value="pear" checked>
<input type='checkbox' value="naartjie">

我想绑定到我的控制器中的一个列表,这样每当一个复选框被更改时,控制器就会维护一个包含所有选中值的列表,例如,['apple', 'pear']。

Ng-model似乎只能将一个复选框的值绑定到控制器中的一个变量。

是否有其他方法可以将这四个复选框绑定到控制器中的列表?


当前回答

一种简单的HTML方法:

<input type="checkbox" ng-checked="fruits.indexOf('apple') > -1" ng-click="fruits.indexOf('apple') > -1 ? fruits.splice(fruits.indexOf('apple'), 1) : fruits.push('apple')"> <input type="checkbox" ng-checked="fruits.indexOf('orange') > -1" ng-click="fruits.indexOf('orange') > -1 ? fruits.splice(fruits.indexOf('orange'), 1) : fruits.push('orange')"> <input type="checkbox" ng-checked="fruits.indexOf('pear') > -1" ng-click="fruits.indexOf('pear') > -1 ? fruits.splice(fruits.indexOf('pear'), 1) : fruits.push('pear')"> <input type="checkbox" ng-checked="fruits.indexOf('naartjie') > -1" ng-click="fruits.indexOf('apple') > -1 ? fruits.splice(fruits.indexOf('apple'), 1) : fruits.push('naartjie')">

其他回答

我改编了Yoshi接受的答案来处理复杂的对象(而不是字符串)。

HTML

<div ng-controller="TestController">
    <p ng-repeat="permission in allPermissions">
        <input type="checkbox" ng-checked="selectedPermissions.containsObjectWithProperty('id', permission.id)" ng-click="toggleSelection(permission)" />
        {{permission.name}}
    </p>

    <hr />

    <p>allPermissions: | <span ng-repeat="permission in allPermissions">{{permission.name}} | </span></p>
    <p>selectedPermissions: | <span ng-repeat="permission in selectedPermissions">{{permission.name}} | </span></p>
</div>

JavaScript

Array.prototype.indexOfObjectWithProperty = function(propertyName, propertyValue)
{
    for (var i = 0, len = this.length; i < len; i++) {
        if (this[i][propertyName] === propertyValue) return i;
    }

    return -1;
};


Array.prototype.containsObjectWithProperty = function(propertyName, propertyValue)
{
    return this.indexOfObjectWithProperty(propertyName, propertyValue) != -1;
};


function TestController($scope)
{
    $scope.allPermissions = [
    { "id" : 1, "name" : "ROLE_USER" },
    { "id" : 2, "name" : "ROLE_ADMIN" },
    { "id" : 3, "name" : "ROLE_READ" },
    { "id" : 4, "name" : "ROLE_WRITE" } ];

    $scope.selectedPermissions = [
    { "id" : 1, "name" : "ROLE_USER" },
    { "id" : 3, "name" : "ROLE_READ" } ];

    $scope.toggleSelection = function toggleSelection(permission) {
        var index = $scope.selectedPermissions.indexOfObjectWithProperty('id', permission.id);

        if (index > -1) {
            $scope.selectedPermissions.splice(index, 1);
        } else {
            $scope.selectedPermissions.push(permission);
        }
    };
}

工作示例:http://jsfiddle.net/tCU8v/

一个简单的解决方案:

<div ng-controller="MainCtrl">
  <label ng-repeat="(color,enabled) in colors">
      <input type="checkbox" ng-model="colors[color]" /> {{color}} 
  </label>
  <p>colors: {{colors}}</p>
</div>

<script>
  var app = angular.module('plunker', []);

  app.controller('MainCtrl', function($scope){
      $scope.colors = {Blue: true, Orange: true};
  });
</script>

http://plnkr.co/edit/U4VD61?p=preview

看看这个:清单模型。

它可以使用JavaScript数组和对象,它可以使用静态HTML复选框,而不需要ng-repeat

<label><input type="checkbox" checklist-model="roles" value="admin"> Administrator</label>
<label><input type="checkbox" checklist-model="roles" value="customer"> Customer</label>
<label><input type="checkbox" checklist-model="roles" value="guest"> Guest</label>
<label><input type="checkbox" checklist-model="roles" value="user"> User</label>

JavaScript方面:

var app = angular.module("app", ["checklist-model"]);
app.controller('Ctrl4a', function($scope) {
    $scope.roles = [];
});

在HTML中(假设复选框位于表中每一行的第一列)。

<tr ng-repeat="item in fruits">
    <td><input type="checkbox" ng-model="item.checked" ng-click="getChecked(item)"></td>
    <td ng-bind="fruit.name"></td>
    <td ng-bind="fruit.color"></td>
    ...
</tr>

在controllers.js文件:

// The data initialization part...
$scope.fruits = [
    {
      name: ....,
      color:....
    },
    {
      name: ....,
      color:....
    }
     ...
    ];

// The checked or not data is stored in the object array elements themselves
$scope.fruits.forEach(function(item){
    item.checked = false;
});

// The array to store checked fruit items
$scope.checkedItems = [];

// Every click on any checkbox will trigger the filter to find checked items
$scope.getChecked = function(item){
    $scope.checkedItems = $filter("filter")($scope.fruits,{checked:true});
};

我认为最简单的解决方法是使用'select'并指定'multiple':

<select ng-model="selectedfruit" multiple ng-options="v for v in fruit"></select>

否则,我认为您将不得不处理该列表来构造该列表 (通过$watch()用复选框绑定模型数组)。