javascript - 我可以在另一个 Controller 中获取一个 Controller 的 Angular 变量吗(由 $http 变量)

Question

我是 Angularjs 的新手，学习了很多。但我卡在了一个点上。谷歌没有帮助我。我有一个 Controller ，我在 $scope.results

中有数据

app.controller('manage_categories', function($scope, $http, $filter, $window) {
     $scope.results = [];
     $http({
        url: base_url + 'employee/fetchData?table=results',
        method: "POST",
    }).success(function(data) {
        $scope.results = data;
    }); 
})

现在我想在没有任何其他 $http 调用的情况下访问其他相同的内容。我已经完成了另一个电话，但我不想要这个。因为我在许多其他 Controller 中需要这个。像这样的东西

app.controller('manage_users', function($scope, $http, $filter, $window,results) {
     $scope.results = results;
     //~ $http({
        //~ url: base_url + 'employee/fetchData?table=results',
        //~ method: "POST",
    //~ }).success(function(data) {
        //~ $scope.results = data;
    //~ });
})

或任何其他方法。谢谢。

更新

我试过了

var myApp = angular.module('myApp',[]);
myApp.factory('results', function() {
  return {
      name : [{id:21,name:'this is test'}]
  };
});

app.controller('manage_users', function($scope, $http, $filter, $window,results) {
         $scope.results = results;
    })

这工作正常。但不能使用 $http 调用。

var myApp = angular.module('myApp',[]);
    myApp.factory('results', function($scope,$http) {
       $scope.results=[];
       $http({
            url: base_url + 'employee/fetchData?table=results',
            method: "POST",
        }).success(function(data) {
            $scope.results = data;
        }); 
      return {
          name : results
      };
    });

更新 2

回答后我这样写

var canapp = angular.module('canApp', ["ngRoute", "angularFileUpload"]);
canapp.service('ResultsFactory', ['$http', function($http) {
   // http call here
   var url=base_url + 'employee/fetchData?table=results';
   $http.post(url,data).success(function(data){
               this.results = data;
          });

}])

这样调用

canapp.controller('get_candidates', function($scope, $http, $filter, $timeout, $window, ResultsFactory) {
$scope.check=ResultsFactory.results;
});

但它没有在模板中设置值

Answer 1

使用$broadcast 在 Controller 之间共享数据。您的代码将如下所示

app.controller('manage_categories', function($scope, $http, $filter, $window, $rootScope) {
     $scope.results = [];
     $http({
        url: base_url + 'employee/fetchData?table=results',
        method: "POST",
    }).success(function(data) {
        $scope.results = data;
        $rootScope.$broadcast("results",data);
    }); 
});

app.controller('otherCtrlr', function($scope, $rootScope) {
         $rootScope.$on("results", function(event, data){
            $scope.results = data;
         });
    });

But using a service call in the controller is not a best approach. Create a factory and create a method to call your service. From controller you need to call this method. But to avoid two service calls, you definitely need to use broadcast/emit(depending on data transfer is from parent or child)