你总是可以创建一个 Common Angular 服务并在其中放置一个 unwrap 方法，以重新创建旧承诺的工作方式。这是一个示例方法：
var shared = angular.module("shared");
shared.service("Common", [
function () {
// [Unwrap] will return a value to the scope which is automatially updated. For example,
// you can pass the second argument an ng-resource call or promise, and when the result comes back
// it will update the first argument. You can also pass a function that returns an ng-resource or
// promise and it will extend the first argument to contain a new "load()" method which can make the
// call again. The first argument should either be an object (like {}) or an array (like []) based on
// the expected return value of the promise.
// Usage: $scope.reminders = Common.unwrap([], Reminders.query().$promise);
// Usage: $scope.reminders = Common.unwrap([], Reminders.query());
// Usage: $scope.reminders = Common.unwrap([], function() { return Reminders.query(); });
// Usage: $scope.reminders.load();
this.unwrap = function(result, func) {
if (!result || !func) return result;
var then = function(promise) {
//see if they sent a resource
if ('$promise' in promise) {
promise.$promise.then(update);
}
//see if they sent a promise directly
else if ('then' in promise) {
promise.then(update);
}
};
var update = function(data) {
if ($.isArray(result)) {
//clear result list
result.length = 0;
//populate result list with data
$.each(data, function(i, item) {
result.push(item);
});
} else {
//clear result object
for (var prop in result) {
if (prop !== 'load') delete result[prop];
}
//deep populate result object from data
$.extend(true, result, data);
}
};
//see if they sent a function that returns a promise, or a promise itself
if ($.isFunction(func)) {
// create load event for reuse
result.load = function() {
then(func());
};
result.load();
} else {
then(func);
}
return result;
};
}
]);
这基本上适用于旧承诺的执行方式和自动解决方式。但是，如果第二个参数是一个函数，它还有一个额外的好处，那就是添加一个“.load()”方法，该方法可以将值重新加载到作用域中。
angular.module('site').controller("homeController", function(Common) {
$scope.reminders = Common.unwrap([], Reminders.query().$promise);
$scope.reminders = Common.unwrap([], Reminders.query());
$scope.reminders = Common.unwrap([], function() { return Reminders.query(); });
function refresh() {
$scope.reminders.load();
}
});