我已跟随Google documentation(向下滚动)以使用Cloud Endpoints启动AngularJS。我的代码如下所示:
的index.html
<!DOCTYPE html>
<html ng-app="AnimalsApp">
<head>
<meta charset="UTF-8">
<title>Animal Manager Server</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.28/angular.min.js"></script>
<script src="js/animal.js"></script>
<script src="https://apis.google.com/js/client.js?onload=init"></script>
</head>
<body>
<div ng-controller="MainCtrl" class="container">
{{message}} world
</div>
</body>
</html>
animal.js
angular.module('AnimalsApp', [])
.controller('MainCtrl', ['$scope', '$window', function($scope, $window) {
$scope.message = 'Hello';
$window.init = function() {
$scope.$apply($scope.load_guestbook_lib);
};
$scope.load_guestbook_lib = function() {
gapi.client.load('creatureCloud', 'v1', function() {
$scope.is_backend_ready = true;
$scope.message = 'Hello beautiful';
console.log('Made it!');
}, 'http://localhost:8888/_ah/api');
};
}]);
function init() {
window.init();
}
文本Made it!
显示在控制台日志中,表明已执行回调。但是,设置$scope.is_backend_ready = true
对显示<div id="listResult" ng-controller="MainCtrl" class="container">
没有影响。这让我相信回调中的$scope
对象无法正常工作。
我做错了什么? Google文档是错误的吗?
答案 0 :(得分:4)
您使用$scope.$apply()
的意图是正确的,但它位于错误的位置。你需要在回调中完成它而不是它。按照您的方式执行函数load_guestbook_lib
,然后执行摘要循环。由于gapi.client.load
函数是异步的,因此它稍后运行,并且在角度上下文中发生时不会发生摘要。
尝试:
$window.init = function() {
$scope.load_guestbook_lib(); //Just invoke the function
};
$scope.load_guestbook_lib = function() {
gapi.client.load('creatureCloud', 'v1', function() {
$scope.is_backend_ready = true;
$scope.message = 'Hello cats';
console.log('Made it!');
$scope.$apply(); //<-- Apply here
}, 'http://localhost:8888/_ah/api');
};