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
另一个简单的指令可以是:
var appModule = angular.module("appModule", []);
appModule.directive("checkList", [function () {
return {
restrict: "A",
scope: {
selectedItemsArray: "=",
value: "@"
},
link: function (scope, elem) {
scope.$watchCollection("selectedItemsArray", function (newValue) {
if (_.contains(newValue, scope.value)) {
elem.prop("checked", true);
} else {
elem.prop("checked", false);
}
});
if (_.contains(scope.selectedItemsArray, scope.value)) {
elem.prop("checked", true);
}
elem.on("change", function () {
if (elem.prop("checked")) {
if (!_.contains(scope.selectedItemsArray, scope.value)) {
scope.$apply(
function () {
scope.selectedItemsArray.push(scope.value);
}
);
}
} else {
if (_.contains(scope.selectedItemsArray, scope.value)) {
var index = scope.selectedItemsArray.indexOf(scope.value);
scope.$apply(
function () {
scope.selectedItemsArray.splice(index, 1);
});
}
}
console.log(scope.selectedItemsArray);
});
}
};
}]);
控制器:
appModule.controller("sampleController", ["$scope",
function ($scope) {
//#region "Scope Members"
$scope.sourceArray = [{ id: 1, text: "val1" }, { id: 2, text: "val2" }];
$scope.selectedItems = ["1"];
//#endregion
$scope.selectAll = function () {
$scope.selectedItems = ["1", "2"];
};
$scope.unCheckAll = function () {
$scope.selectedItems = [];
};
}]);
而HTML:
<ul class="list-unstyled filter-list">
<li data-ng-repeat="item in sourceArray">
<div class="checkbox">
<label>
<input type="checkbox" check-list selected-items-array="selectedItems" value="{{item.id}}">
{{item.text}}
</label>
</div>
</li>
我还包括一个Plunker: http://plnkr.co/edit/XnFtyij4ed6RyFwnFN6V?p=preview
其他回答
<div ng-app='app' >
<div ng-controller='MainCtrl' >
<ul>
<li ng-repeat="tab in data">
<input type='checkbox' ng-click='change($index,confirm)' ng-model='confirm' />
{{tab.name}}
</li>
</ul>
{{val}}
</div>
</div>
var app = angular.module('app', []);
app.controller('MainCtrl',function($scope){
$scope.val=[];
$scope.confirm=false;
$scope.data=[
{
name:'vijay'
},
{
name:'krishna'
},{
name:'Nikhil'
}
];
$scope.temp;
$scope.change=function(index,confirm){
console.log(confirm);
if(!confirm){
($scope.val).push($scope.data[index]);
}
else{
$scope.temp=$scope.data[index];
var d=($scope.val).indexOf($scope.temp);
if(d!=undefined){
($scope.val).splice(d,1);
}
}
}
})
我认为最简单的解决方法是使用'select'并指定'multiple':
<select ng-model="selectedfruit" multiple ng-options="v for v in fruit"></select>
否则，我认为您将不得不处理该列表来构造该列表 (通过$watch()用复选框绑定模型数组)。
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 {
$scope.selectedPermissions.push(permission);
}
};
}
工作示例:http://jsfiddle.net/tCU8v/
<input type='checkbox' ng-repeat="fruit in fruits"
ng-checked="checkedFruits.indexOf(fruit) != -1" ng-click="toggleCheck(fruit)">
.
function SomeCtrl ($scope) {
$scope.fruits = ["apple, orange, pear, naartjie"];
$scope.checkedFruits = [];
$scope.toggleCheck = function (fruit) {
if ($scope.checkedFruits.indexOf(fruit) === -1) {
$scope.checkedFruits.push(fruit);
} else {
$scope.checkedFruits.splice($scope.checkedFruits.indexOf(fruit), 1);
}
};
}
如果在同一个表单上有多个复选框
控制器代码
vm.doYouHaveCheckBox = ['aaa', 'ccc', 'bbb'];
vm.desiredRoutesCheckBox = ['ddd', 'ccc', 'Default'];
vm.doYouHaveCBSelection = [];
vm.desiredRoutesCBSelection = [];
视图代码
<div ng-repeat="doYouHaveOption in vm.doYouHaveCheckBox">
<div class="action-checkbox">
<input id="{{doYouHaveOption}}" type="checkbox" value="{{doYouHaveOption}}" ng-checked="vm.doYouHaveCBSelection.indexOf(doYouHaveOption) > -1" ng-click="vm.toggleSelection(doYouHaveOption,vm.doYouHaveCBSelection)" />
<label for="{{doYouHaveOption}}"></label>
{{doYouHaveOption}}
</div>
</div>
<div ng-repeat="desiredRoutesOption in vm.desiredRoutesCheckBox">
<div class="action-checkbox">
<input id="{{desiredRoutesOption}}" type="checkbox" value="{{desiredRoutesOption}}" ng-checked="vm.desiredRoutesCBSelection.indexOf(desiredRoutesOption) > -1" ng-click="vm.toggleSelection(desiredRoutesOption,vm.desiredRoutesCBSelection)" />
<label for="{{desiredRoutesOption}}"></label>
{{desiredRoutesOption}}
</div>
</div>
