AngularJS 1.0.7：使用$ resources嵌套并行承诺 [英] AngularJS 1.0.7: Nesting parallel promises with $resources

问题描述

这篇文章扩展了前一个已经解决的问题。请看看它，以获取上下文：使用AngularJS 1.0.7中的$资源嵌套承诺

this post extends a previous one already solved. Please see it, to get in context: Nesting promises with $resources in AngularJS 1.0.7

考虑到这种方法，我想对函数进行并行调用，当两者都是完成然后运行带有结果的searchBoats函数。我想我可以嵌套承诺，但我也认为它可以并行完成，也许可以使用$ q.all。不幸的是，这个承诺的主题让我感到困惑，我不知道该怎么做。

With that approach in mind, I would like to make a parallel call to functions and when both are completed then run the searchBoats function with the results. I think I can nest the promises, but I also think it can be done in parallel, maybe with $q.all. Unfortunately, this promises topic is confusing for me and I don´t know how to do it.

以上一篇文章为例，我想做的事情如下： / p>

Taking the previous post example, I would like to do something like:

var parseURL = function() {
  var deferred = $q.defer();
  var promise = deferred.promise;
  promise.then(function success(result) {
    console.log(result);
    searchBoats(result);
  });

  // Instead of resolve when parseBoatType promise is returned, I would like to   
  // wait for two promises
  parseBoatType().then(deferred.resolve);
  parseDestination().then(deferred.resolve);
  // of course, with this code deferred will be resolved when first promise 
  // comes. Is it possible to use $q.all here?
};
parseURL();

推荐答案

如同之前的问题一样，没有必要在这里使用 deferred 。只需使用 $ q.all（），即可返回承诺：

As in your earlier question, there is no need to use a deferred here. Just use $q.all(), which returns a promise:

var parseURL = function() {
  $q.all([parseBoatType(), parseDestination()])
      .then(function (results) {
          console.log(results);
          searchBoats(results);
      });
};
parseURL();

这篇关于AngularJS 1.0.7：使用$ resources嵌套并行承诺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！