在AngularJS我如何通过控制器之间的变量与服务? [英] In AngularJS how do I pass variables between controllers with a service?

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问题描述

我想通过控制器之间的变量与服务。这里是通过将变量(在此情况下,一首歌曲ID)的服务:

 使用严格的;angular.module('PortalApp')
  。服务('ActionbarService',['$窗口',功能ActionbarService(窗口){
    VAR歌曲;
    返回{
        getSong:功能(){
            返回歌曲;
        },
        setSong:函数(值){
            歌=价值;
        }
    };
  }]);

下面是控制器我从设定歌曲的相关部分:

  $ scope.actionbarSetSong =功能(song_id){
  ActionbarService.setSong(song_id);
}

和这里控制器我从获取歌曲ID:

 使用严格的;angular.module('PortalApp')
  .controller('ActionbarCtrl',函数($范围,MediaService,ActionbarService,$位置$ routeParams,AudioPlayerAPI){
    $ scope.song_id = ActionbarService.getSong();
    $ scope.openPlaylistModal =功能(song_id){      $(#addToPlaylist)模式(显示)。
    }
  });

这是在服务被设置,因为当我在我看来,做getSong它的工作(我忘了在哪里),但后来当我尝试将其设置为我的第二个控制器,这是行不通的。下面是我的参考视图的相关部分:

 < D​​IV CLASS =单元行动吧NG点击=actionbarSetSong(song.id); NG-重复=歌media.data>
一些东西
    < / DIV>


解决方案

嗯..服务回报新ActionbarService 。你可能想使用工厂,或者改变您的getter / setter方法​​为 this.get &安培; this.set

此外,避免污染 $ rootScope ;只要你想控制器之间共享数据,使用服务

I want to pass a variable between controllers with a service. Here is the service to pass the variable (in this case a song id):

'use strict';

angular.module('PortalApp')
  .service('ActionbarService', ['$window', function ActionbarService(window) {
    var song;
    return {
        getSong: function () {
            return song;
        },
        setSong: function(value) {
            song = value;
        }
    };
  }]);

Here is the relevant part of the controller I am setting the song from:

$scope.actionbarSetSong = function(song_id) {
  ActionbarService.setSong(song_id);
}

and here is the controller I am getting the song id from:

'use strict';

angular.module('PortalApp')
  .controller('ActionbarCtrl', function ($scope, MediaService, ActionbarService, $location, $routeParams, AudioPlayerAPI) {
    $scope.song_id = ActionbarService.getSong();
    $scope.openPlaylistModal = function (song_id) {

      $("#addToPlaylist").modal('show');
    }
  });

It is being set in the service because when I do getSong in my view it worked (I forget where), but then when I try to set it in my 2nd controller it doesn't work. Here's the relevant part of my view for reference:

    <div class="cell action-bar" ng-click="actionbarSetSong(song.id);" ng-repeat="song in media.data">
Some Stuff
    </div>

解决方案

Mmm.. service returns new ActionbarService. You probably want to use factory, or change your getters/setters to this.get & this.set.

Also, avoid polluting the $rootScope; whenever you want to share data between controllers, use a service.

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