路过一个承诺到ngRepeat [英] Passing a promise into ngRepeat
问题描述
所以,我看到他们在那里传递到推迟一个ngRepeat的angualar例子,它工作得很好。出于某种原因,当我成立这个例子中这是行不通的。谁能告诉我为什么吗?如果分配的数据,而推迟正常工作,即 $ scope.objects = {[ID:1} ...]
结果非常感谢结果
小提琴这里
<!DOCTYPE HTML>
< HTML NG-应用=应用程序>
< HEAD>
< /头>
<身体GT; < testlist /> <脚本SRC =/ lib目录/角/ angular.js>< / SCRIPT>
<脚本>
VAR应用= angular.module('应用',[]); app.factory('的DataService',函数($ Q){
返回{
的getData:功能(){
变种推迟= $ q.defer();
的setTimeout(函数(){
deferred.resolve([{编号:1},{ID:2},{ID:3},{ID:4}]);
},0);
返回deferred.promise;
}
};
});
app.directive('testlist',['的DataService',函数(DataService的){
返回{
限制:'E',
更换:真实,
范围 : {},
模板:'< DIV NG重复=数据对象> {{检查(数据)}} {{data.id}}< / DIV>,
控制器:函数($范围){
$ scope.objects = [{编号:1},{ID:2},{ID:3},{ID:4}];
$ scope.inspect =功能(OBJ){
的console.log(OBJ)
}
}
}
}]); < / SCRIPT>
< /身体GT;
< / HTML>
我不认为你可以使用承诺直接对象,你应该使用然后
作为回调在文档说。
这意味着你的
$ scope.objects = dataService.getData();
而应该是这样的。
dataService.getData()。然后(功能(数据){
$ scope.objects =数据;
});
否则,你的 $ scope.objects
将包含承诺对象,而不是要传递到解决数据
。
这里请参阅更新的小提琴。
So, I saw an example where they were passing an angualar deferred into ngRepeat and it worked fine. For some reason when I set up this example it doesn't work. Can anyone tell me why? If you assign the data without the deferred it works fine i.e. $scope.objects = [{id:1}...]
Many thanks
Fiddle here
<!doctype html>
<html ng-app="app">
<head>
</head>
<body>
<testlist/>
<script src="/lib/angular/angular.js"></script>
<script>
var app = angular.module('app', []);
app.factory('dataService', function ($q) {
return {
getData : function () {
var deferred = $q.defer();
setTimeout(function () {
deferred.resolve([{id:1},{id:2},{id:3},{id:4}]);
},0);
return deferred.promise;
}
};
});
app.directive('testlist', ['dataService', function(dataService) {
return {
restrict: 'E',
replace: true,
scope : {},
template: '<div ng-repeat="data in objects">{{inspect(data)}}{{data.id}}</div>',
controller: function($scope) {
$scope.objects = [{id:1},{id:2},{id:3},{id:4}];
$scope.inspect = function (obj) {
console.log(obj)
}
}
}
}]);
</script>
</body>
</html>
I don't think you can use the promise objects directly, you should use the then
callbacks as stated in the documentation.
This means that your
$scope.objects = dataService.getData();
Should instead be something like
dataService.getData().then(function(data) {
$scope.objects = data;
});
Otherwise, your $scope.objects
will contain the promise object, and not the data you are passing to resolve
.
See the updated fiddle here.
这篇关于路过一个承诺到ngRepeat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IT屋!