Question

您好我有简单的LoginService，如下所示：

jai_core-1.1.3.jar

这是对服务的调用

this.notifyAuthorization = function() {
    console.log('notifyAuthorization()');

    $http({
        url: 'app/?cmd=authorization/',

    }).then(function (response) { console.log('LoginStatusResult: '); console.log(response.data);
        var data = response.data;

        if(data.hash !== undefined) {
            $rootScope.loginStatus= true;
            hash = data.hash;
        }
    });
};

在看到app.run(function($rootScope, $location, LoginService) { LoginService.notifyAuthorization(); console.log('notifyAuthorization Finished'); });之前，我看到LoginStatusResult 和其他控制器初始化应该知道LoginStatus所以如何解决这个问题？还是有更好的做法？感谢

Answer 1

使用promises，默认情况下由$ http函数提供：

this.notifyAuthorization = function() {

    return http({ //notice the return inserted here
        url: 'app/?cmd=authorization/',

    }).then(function (response) { console.log('LoginStatusResult: '); console.log(response.data);
        var data = response.data;

        if(data.hash !== undefined) {
            $rootScope.loginState = true;
            hash = data.hash;
        }
    });
};

并在app.run中正确使用它：

app.run(function($rootScope, $location, LoginService) {       
   LoginService.notifyAuthorization().then(function(){
        $rootScope.authorized = true;; //executed after your $http request...
   });
});

并在您的HTML代码中：

<div ng-controller="myController" ng-if="$root.authorized"> 
    <!-- your inner code..

         <p>Pellentesque habitant morbi tristique senectus et netus et                 
         malesuada fames ac turpis egestas. Vestibulum tortor quam, 
         feugiat vitae, ultricies eget, tempor sit amet, ante. </p>             
    -->
</div>

这样，只有在.then函数解析后才会实例化控制器

angularjs，在转到下一个控制器之前等待授权结果

1 个答案: