等待工厂的回复然后进行服务电话

Question

我希望只有在工厂函数（service(MyService.postData)）中的所有功能都结束后才能调用MyFactory.getData。

工厂的返回值始终为false或未定义，发送服务调用时出错：

1。首先在工厂中调用函数define，用于通过弹出模板登录用户

2. 其次，只有用户登录后，才会进行以下服务：

    //My AngularJS controller is something like 
    myApp.controller("firstCtrl", function($scope, MyFactory, MyService) { 
        $scope.value = MyFactory.getData();
        if($scope.value){
            MyService.postData("url",params).then(function(){
                //do something
            });

    });

    //My AngularJS factory is something like
    myApp.factory("MyFactory",function(){
         return {
             getData: function(){
                //open pop up to login 
                //close pop up get confirmation
                return true;
             }
    });

    //My AngularJS service is something like
    myApp.service("MyService",function($http){
    //do something
    });

Answer 1

您使用的是$http吗？

myApp.factory("MyService", ["$http", function($http){
    return {
        getData: function(url) {
            return $http.get(url);
        },
        postData: function(url, payload) {
            return $http.post(url, payload);
        }
    };
}]);

，然后

myService.getData(url).then(function(response) {
    var payload = {
        item: response.data.someItem;
    };
    var url2 = '/path/to/somewhere/';

    myService.postData(url2, payload).then(function(response) {
        alert('ok');
    }).catch(function(response) {
        alert('error2');
    });
}).catch(function(response) {
        alert('error1');
});