我有一个应用程序有两个表单,即按钮列表和一个带有标签列表的表单。我选择一个人,选择一个电话,然后在第三个表格中显示电话及其相关人员(位置)列表。是否可以在ng-click
块内设置ng-repeat
的变量?我尝试将变量_person设置为等于按钮文本,这将是{{person}}
,但是当我在下一个表单上打印时,_person似乎没有被设置为任何东西。我也不确定我是否在第一个ng-init
中正确使用了<div>
,我应该使用ng-model
吗?
<div ng-init="showSelectUser=true; _person=''">
<div class="selectUser" ng-show="showSelectUser">
<h2>Who are you?</h1>
<ul ng-click="showSelectUser=false; showDeviceForm=true;">
<li ng-repeat="person in people">
<a href="#" role="button" ng-click="_person={{person}}">{{person}}</a>
</li>
</ul>
</div>
<div class="selectDevice" ng-show="showDeviceForm" ng-click="showDeviceForm=false; showDeviceList=true">
<p>person: {{_person}}</p>
<h2>Which phone?</h2>
<ul>
<li ng-repeat="device in devices">
<a class="btn btn-default" href="#" role="button" ng-click="device.location=_person">{{device.name}}</a>
</li>
</ul>
</div>
<div class="devicesView" ng-show="showDeviceList">
<ul>
<li ng-repeat="device in devices">
<h3>{{device.name}}</h3>
<h4 class="deviceLocation">{{device.location}}</h4>
</li>
</ul>
</div>
</div>
angular.module('devicesApp')
.controller('MainCtrl', function ($scope) {
$scope.devices = [
{name: 'iPhone 4', location: 'Desk'},
{name: 'iPhone 5', location: 'Desk'},
{name: 'iPhone 6', location: 'Desk'},
];
$scope.people = [
'John',
'Scott',
'Adam'
];
});
答案 0 :(得分:4)
ngRepeat指令创建一个新范围,因此如果你有ng-click="device.location=_person"
,那么device
模型将在该范围内创建(如果它不存在)。因此,请确保父作用域中已存在device
,例如在控制器中设置$scope.device = {}
。
_person
未定义,因为它是在ng-repeat="person in people"
的内部范围内定义的。目前,您的ng-click会将每个设备位置设置为undefined
。
一般情况下,在ngClicks中使用表达式而不是执行ng-click="setPerson()"
之类的操作并在控制器中使用$scope.setPerson = function () { ... }
时,会有很多范围继承问题。
请用更高级别的术语说明你想做什么,我会更新我的答案。
这样的事情对我来说更合乎逻辑。但是,我认为您将遇到很多UX问题,因为用户在单击其中一个列表项后无法更改其选择。 请注意,如果将业务逻辑放在JS文件而不是模板中,则更容易测试。
<div ng-app="devicesApp" ng-controller="MainCtrl">
<div class="selectUser" ng-show="step === 'step1'">
<h2>Who are you?</h2>
<ul>
<li ng-repeat="person in people">
<a href="#" role="button" ng-click="selectPerson(person)">{{person}}</a>
</li>
</ul>
</div>
<div class="selectDevice" ng-show="step === 'step2'">
<p>person: {{selected.person}}</p>
<h2>Which phone?</h2>
<ul>
<li ng-repeat="device in devices"> <a class="btn btn-default" href="#" role="button" ng-click="selectDevice(device)">{{device.name}}</a>
</li>
</ul>
</div>
<div class="devicesView" ng-show="step === 'step3'">
<ul>
<li ng-repeat="device in devices">
<h3>{{device.name}}</h3>
<h4 class="deviceLocation">{{device.location}}</h4>
</li>
</ul>
</div>
</div>
在JS文件中:
angular.module('devicesApp', []).controller('MainCtrl', function ($scope) {
$scope.devices = [{
name: 'iPhone 4',
location: 'Desk'
}, {
name: 'iPhone 5',
location: 'Desk'
}, {
name: 'iPhone 6',
location: 'Desk'
}, ];
$scope.people = [
'John',
'Scott',
'Adam'];
$scope.selected = {};
$scope.step = 'step1';
$scope.selectPerson = function (person) {
$scope.selected.person = person;
$scope.step = 'step2';
};
$scope.selectDevice = function (device) {
device.location = $scope.selected.person;
$scope.step = 'step3';
}
});
请参阅this JSFiddle。