javascript - 使用 Bluebird promise

Question

我有 myPeople 函数，它在其中调用这样的 promise 函数

var myPeople = function(){
    var go;
    return new Promise (function(resolve){
        User
           .getPeople()
           .then(function(allPeople){
                go = allPeople;
                //console.log(go)
                resolve(go);
           })
        })
    return go;
}

如果我在 block 内记录我的 go 我得到了我的对象，但我无法让它返回这个对象..

Answer 1

Chain the promise，同时避免 then(success, fail) 反模式:

var myPeople = function(){
    return User.getPeople()
           .then(function(allPeople){ // 
                console.log(allPeople);  
                return allPeople.doSomething(); // filter or do whatever you need in
                                                // order to get myPeople out of 
                                                // allPeople and return it

           });
        });
}

然后在外面:

myPeople.then(function(people){
  console.log(people); // this will log myPeople, which you returned in the `then`
});