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

根据我在这里的另一篇文章,我已经做了一个可重用的指令。

查看GitHub存储库

(function () { angular .module("checkbox-select", []) .directive("checkboxModel", ["$compile", function ($compile) { return { restrict: "A", link: function (scope, ele, attrs) { // Defining updateSelection function on the parent scope if (!scope.$parent.updateSelections) { // Using splice and push methods to make use of // the same "selections" object passed by reference to the // addOrRemove function as using "selections = []" // creates a new object within the scope of the // function which doesn't help in two way binding. scope.$parent.updateSelections = function (selectedItems, item, isMultiple) { var itemIndex = selectedItems.indexOf(item) var isPresent = (itemIndex > -1) if (isMultiple) { if (isPresent) { selectedItems.splice(itemIndex, 1) } else { selectedItems.push(item) } } else { if (isPresent) { selectedItems.splice(0, 1) } else { selectedItems.splice(0, 1, item) } } } } // Adding or removing attributes ele.attr("ng-checked", attrs.checkboxModel + ".indexOf(" + attrs.checkboxValue + ") > -1") var multiple = attrs.multiple ? "true" : "false" ele.attr("ng-click", "updateSelections(" + [attrs.checkboxModel, attrs.checkboxValue, multiple].join(",") + ")") // Removing the checkbox-model attribute, // it will avoid recompiling the element infinitly ele.removeAttr("checkbox-model") ele.removeAttr("checkbox-value") ele.removeAttr("multiple") $compile(ele)(scope) } } }]) // Defining app and controller angular .module("APP", ["checkbox-select"]) .controller("demoCtrl", ["$scope", function ($scope) { var dc = this dc.list = [ "selection1", "selection2", "selection3" ] // Define the selections containers here dc.multipleSelections = [] dc.individualSelections = [] }]) })() label { display: block; } <!DOCTYPE html> <html> <head> <link rel="stylesheet" href="style.css" /> </head> <body ng-app="APP" ng-controller="demoCtrl as dc"> <h1>checkbox-select demo</h1> <h4>Multiple Selections</h4> <label ng-repeat="thing in dc.list"> <input type="checkbox" checkbox-model="dc.multipleSelections" checkbox-value="thing" multiple> {{thing}} </label> <p>dc.multipleSelecitons:- {{dc.multipleSelections}}</p> <h4>Individual Selections</h4> <label ng-repeat="thing in dc.list"> <input type="checkbox" checkbox-model="dc.individualSelections" checkbox-value="thing"> {{thing}} </label> <p>dc.individualSelecitons:- {{dc.individualSelections}}</p> <script data-require="jquery@3.0.0" data-semver="3.0.0" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0/jquery.js"></script> <script data-require="angular.js@1.5.6" data-semver="1.5.6" src="https://code.angularjs.org/1.5.6/angular.min.js"></script> <script src="script.js"></script> </body> </html>

其他回答

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)。

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});
};

下面的解决方案似乎是个不错的选择,

<label ng-repeat="fruit in fruits">
  <input
    type="checkbox"
    ng-model="fruit.checked"
    ng-value="true"
  > {{fruit.fruitName}}
</label>

在控制器模型中,值果实是这样的

$scope.fruits = [
  {
    "name": "apple",
    "checked": true
  },
  {
    "name": "orange"
  },
  {
    "name": "grapes",
    "checked": true
  }
];

根据我在这里的另一篇文章,我已经做了一个可重用的指令。

查看GitHub存储库

(function () { angular .module("checkbox-select", []) .directive("checkboxModel", ["$compile", function ($compile) { return { restrict: "A", link: function (scope, ele, attrs) { // Defining updateSelection function on the parent scope if (!scope.$parent.updateSelections) { // Using splice and push methods to make use of // the same "selections" object passed by reference to the // addOrRemove function as using "selections = []" // creates a new object within the scope of the // function which doesn't help in two way binding. scope.$parent.updateSelections = function (selectedItems, item, isMultiple) { var itemIndex = selectedItems.indexOf(item) var isPresent = (itemIndex > -1) if (isMultiple) { if (isPresent) { selectedItems.splice(itemIndex, 1) } else { selectedItems.push(item) } } else { if (isPresent) { selectedItems.splice(0, 1) } else { selectedItems.splice(0, 1, item) } } } } // Adding or removing attributes ele.attr("ng-checked", attrs.checkboxModel + ".indexOf(" + attrs.checkboxValue + ") > -1") var multiple = attrs.multiple ? "true" : "false" ele.attr("ng-click", "updateSelections(" + [attrs.checkboxModel, attrs.checkboxValue, multiple].join(",") + ")") // Removing the checkbox-model attribute, // it will avoid recompiling the element infinitly ele.removeAttr("checkbox-model") ele.removeAttr("checkbox-value") ele.removeAttr("multiple") $compile(ele)(scope) } } }]) // Defining app and controller angular .module("APP", ["checkbox-select"]) .controller("demoCtrl", ["$scope", function ($scope) { var dc = this dc.list = [ "selection1", "selection2", "selection3" ] // Define the selections containers here dc.multipleSelections = [] dc.individualSelections = [] }]) })() label { display: block; } <!DOCTYPE html> <html> <head> <link rel="stylesheet" href="style.css" /> </head> <body ng-app="APP" ng-controller="demoCtrl as dc"> <h1>checkbox-select demo</h1> <h4>Multiple Selections</h4> <label ng-repeat="thing in dc.list"> <input type="checkbox" checkbox-model="dc.multipleSelections" checkbox-value="thing" multiple> {{thing}} </label> <p>dc.multipleSelecitons:- {{dc.multipleSelections}}</p> <h4>Individual Selections</h4> <label ng-repeat="thing in dc.list"> <input type="checkbox" checkbox-model="dc.individualSelections" checkbox-value="thing"> {{thing}} </label> <p>dc.individualSelecitons:- {{dc.individualSelections}}</p> <script data-require="jquery@3.0.0" data-semver="3.0.0" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0/jquery.js"></script> <script data-require="angular.js@1.5.6" data-semver="1.5.6" src="https://code.angularjs.org/1.5.6/angular.min.js"></script> <script src="script.js"></script> </body> </html>

你可以结合AngularJS和jQuery。例如,您需要定义一个数组$scope。控制器中的Selected = [];

<label ng-repeat="item in items">
    <input type="checkbox" ng-model="selected[$index]" ng-true-value="'{{item}}'">{{item}}
</label>

您可以获得拥有所选项目的数组。使用方法alert(JSON.stringify($scope.selected)),可以检查选中的项。