AngularJS 使用 ng-repeat 中的范围变量设置 ng-click 函数 [英] AngularJS set ng-click function with scope variables within ng-repeat

问题描述

我想在 ng-repeat 中为 ng-click 分配不同的功能:

{{button.label}} </button>

控制器:

app.controller('MainCtrl', ['$scope', function($scope){$scope.notification = {ctrl: '退出',text: '退出?',纽扣: [{label:'Yes', fn: 'logout()'},{标签:'否'，fn:'取消()'}，],};}]);app.controller('logout', ['$scope', function($scope){$scope.logout = function(){警报('退出')；};$scope.cancel = function(){警报('取消')；};}]);

如果我把 button.fn 放在双卷曲 ng-click="{{button.fn}}" 生成的 html 在 Chrome 检查器中看起来不错，但 Angular 会抛出以下错误:

<块引用>

错误:[$parse:syntax] 语法错误:令牌button.fn"是意外的，期望 [:] 在表达式 [{{button.fn}}] 的第 3 列开始在 [button.fn}}].

如果没有双卷曲，没有错误，但是Angular会像这样生成html并且函数不会触发:

 是 logout()</button>

PLUNKER

我有一个关于使用范围变量设置 ng-controller 的相关问题，示例相同 此处.

解决方案

http://plnkr.co/edit/QE50kpfBjXy2WPvjVsJc?p=preview

我已经创建了一个你的代码的分支.您的fn"引用是字符串.我将它们更改为函数，并将()"添加到模板中的button.fn".我还更改了函数引用的位置，因为函数的定义在不同的控制器中.

var app = angular.module('plunker', []);app.controller('MainCtrl', ['$scope', function($scope){$scope.notification = {ctrl: '退出',text: '退出?',纽扣: [{label:'Yes', fn: null},{label:'No', fn: null},],};}]);app.directive('通知', [功能() {返回 {限制:'E'，//E = 元素，A = 属性，C = 类，M = 评论templateUrl: 'notification.tpl.html',替换:真的，链接:函数(范围，元素，属性){//...}};}])app.controller('logout', ['$scope', function($scope){$scope.logout = function(){警报('退出')；};$scope.cancel = function(){警报('取消')；};$scope.notification.buttons[0].fn = $scope.logout;$scope.notification.buttons[1].fn = $scope.cancel;}]);

<p>{{notification.text}}</p><button ng-repeat="notification.buttons 中的按钮" ng-click="button.fn()">{{button.label}} {{button.fn}}</button><button ng-click="logout()">测试

I would like to assign different functions to ng-click within ng-repeat:

<button ng-repeat="button in notification.buttons" ng-click="button.fn"> {{button.label}} </button>

Controllers:

app.controller('MainCtrl', ['$scope', function($scope){
    $scope.notification = {
        ctrl: 'logout', 
        text: 'Logout?',
        buttons: [
                {label:'Yes', fn: 'logout()'},
                {label:'No', fn: 'cancel()'},
        ],
    };
}]);

app.controller('logout', ['$scope', function($scope){
    $scope.logout = function(){
        alert('logout');
    };
    $scope.cancel = function(){
        alert('cancel');
    };
}]);

If I put button.fn in double curlies ng-click="{{button.fn}}" the generated html looks good in the Chrome inspector, but Angular throws the following error:

Error: [$parse:syntax] Syntax Error: Token 'button.fn' is unexpected, expecting [:] at column 3 of the expression [{{button.fn}}] starting at [button.fn}}].

If there are no double curlies, no error, but Angular generates the html like this and the functions won't fire:

 <button ng-repeat="button in notification.buttons" ng-click="button.fn" class="ng-binding ng-scope"> Yes logout()</button>

PLUNKER

I have a related question about setting ng-controller with scope variables with this very same example here.

解决方案

http://plnkr.co/edit/QE50kpfBjXy2WPvjVsJc?p=preview

I've created a fork of your code. Your 'fn' reference were strings. I changed them to functions, and added '()' to the 'button.fn' in the template. I also changed where the function references were made since the definitions of the functions were in a different controller.

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

app.controller('MainCtrl', ['$scope', function($scope){
    $scope.notification = {
        ctrl: 'logout', 
        text: 'Logout?',
        buttons: [
    			{label:'Yes', fn: null},
    			{label:'No', fn: null},
        ],
    };
}]);

app.directive('notification', [
	function() {
		return {
		restrict: 'E', // E = Element, A = Attribute, C = Class, M = coMment
		templateUrl: 'notification.tpl.html',
		replace: true,
		link: function(scope, element, attrs) {
      //...
		}
	};
		
		
}])

app.controller('logout', ['$scope', function($scope){
  $scope.logout = function(){
      alert('logout');
  };
  $scope.cancel = function(){
      alert('cancel');
  };
  
  $scope.notification.buttons[0].fn = $scope.logout;
  $scope.notification.buttons[1].fn = $scope.cancel;
}]);

<div ng-controller="logout">
    <p>{{notification.text}}</p>
    <button ng-repeat="button in notification.buttons" ng-click="button.fn()"> {{button.label}} {{button.fn}}</button>
    <button ng-click="logout()"> Test</button>
</div>

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