Question

我是角度js的新手，以下代码在我的项目中使用我的问题是当我点击ng-click = addtocart（参数）时它没有响应子控制器。我可以调用子控制器？请帮帮我？

<div ng-app="" ng-controller="parentCtrl">
    <ul>
    <li ng-click="search('12345');">
    <div >
        <div>
        <div><img src="ProfileImges/menu.jpg"/></div>
        <div>Hello</div>
        </div>
    </div>
    </li>
    </ul>
    <div ng-repeat="x in names">
        <div ng-click="addToCart('SMN1');">
        <div>
            <h4> {{ x.Price }} per meal</h4>
            <img  ng-src="{{x.ImgSrc}}"/>
        </div>
        <div>
            <img ng-src="{{x.UserImg}}"/>
            <p><strong>{{x.Uname}}</strong><br>
                <span>{{x.RewPer}} </span><br>
            </p>
        </div>
        <h4>{{x.Mtitle}}</h4>
        <span><strong>{{x.Cuisine}}</strong></span>
        <p`enter code here`>{{x.Mdesc}}</p>
        </div>
    </div>
    <div ng-controller="childCtrl">
    <div>{{cartdetails.name }}</div>
    <div>Price</div>
    </div>
    </div>

    <script>
    var sj=angular.module('MyApp', []);
    sj.controller('parentCtrl', ['$scope','$http', function($scope, $http) {
      $scope.search = function(param) {alert("enter123");
          $http.get('AngularJs-Response.jsp?mid='+param).success(function(response) {
            $scope.names = response;
          });
      };
      $scope.addToCart=function(smid){
          CallAddCart(smid);
      };
    }]);
    function CallAddCart(smid) {
        sj.controller('childCtrl', ['$scope','$http', function($scope, $http) {
                  $http.get('reponse.jsp?smid='+smid).success(function(response) {alert(response);
                  $scope.cartdetails = response;    
                  });
            }]);
    };
    </script>

Answer 1

请参阅plnkr：http://plnkr.co/edit/IdsHc19xBUalZoIXPE2T?p=preview 简而言之，您可以通过$ broadcast和$ on API将$ scope作为事件总线从父控制器传送到子控制器：

    angular.module("app", [])
  .controller("ParentCtrl", function($scope) {
    $scope.parentName = "parent";
    $scope.onClick = function() {
      $scope.parentName = "clicked";
      $scope.$broadcast('onSearch', {myMsg: "hi children"});
    }
  })
  .controller("ChildCtrl", function($scope) {
    $scope.childName = "child";
    $scope.$on('onSearch', function(event, obj) {
      $scope.childName = obj.myMsg;
    })
  });

在父节点上调用onClick（）后，父节点会在'onSearch'频道上向其所有子节目播放'name'。 ChildCtrl配置为侦听'onSearch'通道，一旦收到消息，就会执行回调函数。

当父控制器ng-click指令被调用时，我们如何调用子控制器？

1 个答案: