问题描述
我在 JavaScript 方面很糟糕,而且对 Angular 非常陌生,所以请耐心等待.
I'm terrible at javascript and very new to Angular so do bear with me.
我的服务器正在返回:
{"latitude": 3.172398, "name": "Event", "longitude": 101.6739005}
services.js
var mapModule = angular.module('map.services', ['ngResource']);
mapModule.factory('Event', function($resource) {
return $resource('/custom_api/get_event_details/:eventId/',
{eventId: '@id'});
});
controller.js
function mapCtrl($scope, Event) {
var eventDetail = Event.get({eventId: $scope.eventId});
console.log(eventDetail);
console.log(eventDetail.latitude);
}
我正在尝试通过 eventDetail.latitude
访问我的服务器返回的 json,但我得到 undefined
.
I'm trying to access the json returned by my server via eventDetail.latitude
but I am getting undefined
.
在控制台中,console.log(eventDetail)
看起来像:
In console, console.log(eventDetail)
looks like:
e {$get: function, $save: function, $query: function, $remove: function, $delete: function}
latitude: 3.172398
longitude: 101.6739005
name: "abc"
__proto__: e
我知道 eventDetail
是一个 resource
实例,但如何直接获取值?
I get that eventDetail
is a resource
instance but how do I just get to the values directly?
如果我在控制器中设置了 $scope.eventDetail
,我将能够通过模板中的 {{ eventDetail.latitude }}
访问它.
If I had set $scope.eventDetail
in my controller, I would be able to access it via {{ eventDetail.latitude }}
in my template.
我到底如何在控制器中执行此操作?
How on earth do I do this in the controller?
推荐答案
来自 文档一个>:
重要的是要意识到调用 $resource 对象方法会立即返回一个空引用(取决于 isArray 的对象或数组).从服务器返回数据后,现有引用将填充实际数据.
所以除非你把它放在回调函数中,否则你的日志不会工作,就像这样:
So your logging wont work unless you put it in a callback function, like this:
function mapCtrl($scope, Event) {
Event.get({eventId: $scope.eventId},function(eventDetail){
//on success callback function
console.log(eventDetail);
console.log(eventDetail.latitude);
});
}
如果您出于某种原因不想使用 resource
,您可以使用 $http
服务:
If you for some reason don't want to work with a resource
you can use the $http
service:
$http.get(url).then(function(response){console.log(response.data);});
这篇关于Angular:访问控制器中的资源值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!