Question

我有一个工厂，我有发布和评论属性，这些属性值来自我的资源对象。但是当我尝试调用 getComment（）函数时，它仍会返回[];

我的工厂 angular.module（'flapperNews'）。factory（'postService'，['$ resource'，function（$ resource）{

    var service = {};
    var postId = 0;
    var post = {};
    var comments = [];

    service.resource = function() {
        return $resource('api/posts/:id.json', {id: "@id"},
        {
            'create':  { method: 'POST' },
            'index':   { method: 'GET', isArray: true },
            'show':    { method: 'GET', isArray: false },
            'update':  { method: 'PUT' },
            'destroy': { method: 'DELETE' }
        }
        );
    };

    service.setPost = function(postId) {
        this.resource().show({id: postId}, function(post) {
            post = post;
            comments = post.comments;
        });
    };

    service.getComments = function() {
        return comments;
    };
    service.setPostId = function(newPostId) {
        this.postId = newPostId;
    };

    return service;

}]);

在我的控制器中使用

....
function ($scope, Post, Comment, $stateParams, formlyValidationMessages, Page,     Auth, loginForm, postService) {

    postService.setPost($stateParams.id);
    console.log(postService.getComments());
    ....

Answer 1

您的代码是异步的，并且您尝试同步使用，将该功能更改为

 service.setPost = function(postId) {
        return this.resource().show({id: postId}).$promise.then(function(post) {
            post = post;
            comments = post.comments;
        });
    };

并在控制器中 -

postService.setPost($stateParams.id).then(function(){
     console.log(postService.getComments());
});

这样它应该有效！因为我们等待评论属性被填满。

祝你好运

Angularjs在Factory中从资源设置值

1 个答案: