AngularJS服务传递控制器之间的数据 [英] AngularJS Service Passing Data Between Controllers

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本文介绍了AngularJS服务传递控制器之间的数据的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

当使用AngularJS服务来试图和两个控制器之间传递数据,试图从服务访问数据时,我的第二个控制器总是收到不确定的。我猜这是因为第一个服务做了$ window.location.href,我想这在服务中清除出来的数据?有我的方式将URL更改为新的位置,并保持在第二个控制器的服务的数据持久化?当我运行警报低于code。在第二个控制器始终是不确定的。

app.js(如果服务被定义)

  VAR应用= angular.module('SetTrackerApp',['$ strap.directives','ngCookies']);的app.config(函数($ routeProvider)
{
$ routeProvider
  。当('/应用程序',{templateUrl:'谐音/ addset.html',控制器:'SetController'})
  。当('/ profile文件',{templateUrl:'谐音/ profile.html',控制器:'ProfileController可'})
  不然的话({templateUrl:/partials/addset.html',控制器:'SetController'});
});app.factory('userService',函数(){
VAR用户数据= [
    {yearSetCount:0}
];返回{
    用户:函数(){
        返回用户数据;
    },
    setEmail:功能(电子邮件){
        userData.email =电子邮件;
    },
    getEmail:功能(){
        返回userData.email;
    },
    setSetCount:功能(setCount){
        userData.yearSetCount = setCount;
    },
    getSetCount:功能(){
        返回userData.yearSetCount;
    }
};
});

logincontroller.js:(控制器1它设置在服务价值)

  app.controller('的LoginController',函数($范围,$ HTTP,$窗口,userService){$ scope.login =功能(){
    $ HTTP({
        方法:POST,
        网址:'/登录',
        数据:$ scope.user
    })。成功(功能(数据){
        userService.setEmail(取得foobar);
        $ window.location.href ='/应用程序
    })错误(功能(数据){
        $ scope.login.error = TRUE;
        $ scope.error =数据;
    });
}
});

appcontroller.js(第二控制器试图读取从服务价值)

  app.controller('AppController的',函数($范围,$ HTTP,userService){$ scope.init =功能(){
    警报(在初始化用户名:userService.getEmail());
}});


解决方案

定义你的服务这样的

  app.service('userService',函数(){
  this.userData = {yearSetCount:0};  this.user =功能(){
        返回this.userData;
  };  this.setEmail =功能(电子邮件){
        this.userData.email =电子邮件;
  };  this.getEmail =功能(){
        返回this.userData.email;
  };  this.setSetCount =功能(setCount){
        this.userData.yearSetCount = setCount;
  };  this.getSetCount =功能(){
        返回this.userData.yearSetCount;
  };
});

下面看看邓肯的回答是:

<一个href=\"http://stackoverflow.com/questions/17933321/angularjs-what-are-the-major-differences-in-the-different-ways-to-declare-a-se\">AngularJS - 什么是在不同方式的角度来声明一个服务的主要区别

When using an AngularJS service to try and pass data between two controllers, my second controller always receives undefined when trying to access data from the service. I am guessing this is because the first service does a $window.location.href and I'm thinking this is clearing out the data in the service? Is there a way for me to change the URL to a new location and keep the data persisted in the service for the second controller? When I run the code below the alert in the second controller is always undefined.

app.js (Where Service is Defined)

var app = angular.module('SetTrackerApp', ['$strap.directives', 'ngCookies']);

app.config(function ($routeProvider) 
{
$routeProvider
  .when('/app', {templateUrl: 'partials/addset.html', controller:'SetController'})
  .when('/profile', {templateUrl: 'partials/profile.html', controller:'ProfileController'})
  .otherwise({templateUrl: '/partials/addset.html', controller:'SetController'});
});

app.factory('userService', function() {
var userData = [
    {yearSetCount: 0}
];

return {
    user:function() {
        return userData;
    },
    setEmail: function(email) {
        userData.email = email;
    },
    getEmail: function() {
        return userData.email;
    },
    setSetCount: function(setCount) {
        userData.yearSetCount = setCount;
    },
    getSetCount: function() {
        return userData.yearSetCount;
    }
};
});

logincontroller.js: (Controller 1 which sets value in service)

    app.controller('LoginController', function ($scope, $http, $window, userService) {

$scope.login = function() {
    $http({
        method : 'POST',
        url : '/login',
        data : $scope.user
    }).success(function (data) {
        userService.setEmail("foobar");
        $window.location.href = '/app'
    }).error(function(data) {
        $scope.login.error = true;
        $scope.error = data;
    });
}
});

appcontroller.js (Second controller trying to read value from service)

app.controller('AppController', function($scope, $http, userService) {

$scope.init = function() {      
    alert("In init userId: " userService.getEmail());
}

});

解决方案

Define your service like this

app.service('userService', function() {
  this.userData = {yearSetCount: 0};

  this.user = function() {
        return this.userData;
  };

  this.setEmail = function(email) {
        this.userData.email = email;
  };

  this.getEmail = function() {
        return this.userData.email;
  };

  this.setSetCount = function(setCount) {
        this.userData.yearSetCount = setCount;
  };

  this.getSetCount = function() {
        return this.userData.yearSetCount;
  };
});

Check out Duncan's answer here:

AngularJS - what are the major differences in the different ways to declare a service in angular?

这篇关于AngularJS服务传递控制器之间的数据的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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