我如何使用与蓝鸟角？ [英] How do I use Bluebird with Angular?
问题描述
我试着用角与蓝鸟承诺：
I tried using Angular with Bluebird promises:
HTML
<body ng-app="HelloApp">
<div ng-controller="HomeController">{{name}} {{also}}</div>
</body>
JS：
// javascript
var app = angular.module('HelloApp', []);
app.controller("HomeController", function ($scope) {
var p = Promise.delay(1000).then(function () {
$scope.name = "Bluebird!";
console.log("Here!", $scope.name);
}).then(function () {
$scope.also = "Promises";
});
$scope.name = "$q";
$scope.also = "promises";
});
window.app = app;
[ 小提琴 ]
不过，无论怎样我试过了，它一直呆在$ Q用并没有更新。除非我增加了一个手动 $范围。$适用我宁愿避免的。
However, no matter what I tried, it kept staying "$q promises" and did not update. Except if I added a manual $scope.$apply which I'd rather avoid.
（我知道这是可能的，因为$ Q做它）
(I know it's possible since $q does it)
我使用蓝鸟2.0，我得到了
I'm using Bluebird 2.0 which I got here.
推荐答案
好吧，如果我们看一下角自己的诺言是如何工作的，我们需要让蓝鸟到 $ evalAsync 的地方，以获得完全相同的行为。
This is possible, and even quite easy!
Well, if we look at how Angular's own promises work, we need to get Bluebird to $evalAsync somewhere in order to get the exact same behavior.
如果我们这样做，其实两者的实现是承诺/ A + 的投诉意味着我们可以$ Q code和蓝鸟之间$互操作C $ç意义，我们可以使用所有的蓝鸟的特征角code自如。
If we do that, the fact both implementations are Promises/A+ complaint means we can interop between $q code and Bluebird code meaning we can use all of Bluebird's features in Angular code freely.
蓝鸟公开此功能，其<一个href=\"https://github.com/petkaantonov/bluebird/blob/master/API.md#promisesetschedulerfunction-scheduler---void\"><$c$c>Promise.setScheduler功能：
Bluebird exposes this functionality, with its Promise.setScheduler functionality:
// after this, all promises will cause digests like $q promises.
function trackDigests(app) {
app.run(["$rootScope",function ($rootScope) {
Promise.setScheduler(function (cb) {
$rootScope.$evalAsync(cb);
});
}]);
}
现在我们所要做的就是添加一个：
Now all we have to do is add a:
trackDigests(app);
行的 VAR应用= ... 行之后，一切都会正常工作。对于加分，把青鸟的服务，让你可以注入它，而不是使用它的全局命名空间。
Line after the var app = ... line, and everything will work as expected. For bonus points, put Bluebird in a service so you can inject it rather than use it on the global namespace.
下面是一个[ 小提琴 ]说明此行为。
Here is a [Fiddle] illustrating this behavior.
请注意，除了所有功能蓝鸟拥有超过 $ Q ，更重要的问题之一是，青鸟会的不的运行 $ exceptionHandler的，而是会自动跟踪未处理的拒绝，这样你就可以扔自由地与蓝鸟的承诺和蓝鸟将数字出来。此外调用 Promise.longStackTraces（）可调试了很多帮助。
Note that besides all the features Bluebird has over $q, one of the more important ones is that Bluebird will not run $exceptionHandler, but instead will automatically track unhandled rejections, so you can throw freely with Bluebird promises and Bluebird will figure them out. Moreover calling Promise.longStackTraces() can help with debugging a lot.
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